CVE-2022-25235
highpriority · attend · 51EPSS 0.050 · 92 %ileexploit · PoCDEEURUUSEPSS · scored 2026-10-27
xmltok_impl.c in Expat (aka libexpat) before 2.4.5 lacks certain validation of encoding, such as checks for whether a UTF-8 character is valid in a certain context.
remediations
Vendor fix, mitigation, or workaround guidance, as published by each source.
A vendor fix is available.
- FixedSIMATIC S7-1500 CPU 1518-4 PN/DP MFP (6ES7518-4AX00-1AB0)siemens_psirt
Update to V3.1.5 or later version
https://support.industry.siemens.com/cs/ww/en/view/109478459/ - FixedSIMATIC S7-1500 CPU 1518-4 PN/DP MFP (6ES7518-4AX00-1AC0)siemens_psirt
Update to V3.1.5 or later version
https://support.industry.siemens.com/cs/ww/en/view/109478459/ - FixedSIMATIC S7-1500 CPU 1518F-4 PN/DP MFP (6ES7518-4FX00-1AB0)siemens_psirt
Update to V3.1.5 or later version
https://support.industry.siemens.com/cs/ww/en/view/109478459/ - FixedSIMATIC S7-1500 CPU 1518F-4 PN/DP MFP (6ES7518-4FX00-1AC0)siemens_psirt
Update to V3.1.5 or later version
https://support.industry.siemens.com/cs/ww/en/view/109478459/ - FixedSIPLUS S7-1500 CPU 1518-4 PN/DP MFP (6AG1518-4AX00-4AC0)siemens_psirt
Update to V3.1.5 or later version
https://support.industry.siemens.com/cs/ww/en/view/109478459/ - FixedSINEMA Remote Connect Serversiemens_psirt
Update to V3.1 or later version
https://support.industry.siemens.com/cs/ww/en/view/109811169/ - FixedPROFINET SDKphoenix_contact_psirt
Use only trusted connections between the Engineering tools and the devices executing the Profinet stack. Update configuration tool chains to libexpat library version 2.4.6. or higher. Upgrade to PROFINET SDK 6.6 or higher if necessary.
- Fixedphoenix_contact_psirt
Update to the latest LTS Firmware Release.Update to the latest LTS PLCnext Engineer Release.Please check Phoenix Contact PSIRT webpage for further Updates of this Advisory.
- FixedSINEMA Remote Connect Servercisa_csaf_ot
Update to V3.1 or later version
https://support.industry.siemens.com/cs/ww/en/view/109811169/ - FixedAFF66X FWcisa_csaf_ot
AFF66X FW 03.0.02 and earlier: For all vulnerabilities, apply mitigation strategy as described in Hitachi Energy's general mitigation factors below or update to upcoming AFF66X 04.x.xx FW when released.
- FixedAFR677cisa_csaf_ot
AFS65X, AFS67X, AFR677 devices: For all vulnerabilities, apply mitigation strategy as described in Hitachi Energy's general mitigation factors below or update to AFS65X, AFS67X, AFR677 09.1.08 FW. Disable HTTP/HTTPS server or restrict access to HTTP/HTTPS to trusted IP addresses. Disable IEC61850-MMS server.
- FixedAFS65Xcisa_csaf_ot
AFS65X, AFS67X, AFR677 devices: For all vulnerabilities, apply mitigation strategy as described in Hitachi Energy's general mitigation factors below or update to AFS65X, AFS67X, AFR677 09.1.08 FW. Disable HTTP/HTTPS server or restrict access to HTTP/HTTPS to trusted IP addresses. Disable IEC61850-MMS server.
- FixedAFS660-Ccisa_csaf_ot
AFS66X-S, AFS660-C, AFS66X-B, AFS670-V20 devices: For all vulnerabilities, apply mitigation strategy as described in Hitachi Energy's general mitigation factors below or update to upcoming AFS66X, AFS670-V20 7.1.08 FW when released. Disable HTTP/HTTPS server or restrict access to HTTP/HTTPS to trusted IP addresses. Disable IEC61850-MMS server or restrict access to IEC61850-MMS to trusted IP addresses.
- FixedAFS66X-Bcisa_csaf_ot
AFS66X-S, AFS660-C, AFS66X-B, AFS670-V20 devices: For all vulnerabilities, apply mitigation strategy as described in Hitachi Energy's general mitigation factors below or update to upcoming AFS66X, AFS670-V20 7.1.08 FW when released. Disable HTTP/HTTPS server or restrict access to HTTP/HTTPS to trusted IP addresses. Disable IEC61850-MMS server or restrict access to IEC61850-MMS to trusted IP addresses.
- FixedAFS66X-Scisa_csaf_ot
AFS66X-S, AFS660-C, AFS66X-B, AFS670-V20 devices: For all vulnerabilities, apply mitigation strategy as described in Hitachi Energy's general mitigation factors below or update to upcoming AFS66X, AFS670-V20 7.1.08 FW when released. Disable HTTP/HTTPS server or restrict access to HTTP/HTTPS to trusted IP addresses. Disable IEC61850-MMS server or restrict access to IEC61850-MMS to trusted IP addresses.
- FixedAFS670-V20cisa_csaf_ot
AFS66X-S, AFS660-C, AFS66X-B, AFS670-V20 devices: For all vulnerabilities, apply mitigation strategy as described in Hitachi Energy's general mitigation factors below or update to upcoming AFS66X, AFS670-V20 7.1.08 FW when released. Disable HTTP/HTTPS server or restrict access to HTTP/HTTPS to trusted IP addresses. Disable IEC61850-MMS server or restrict access to IEC61850-MMS to trusted IP addresses.
- FixedAFS67Xcisa_csaf_ot
AFS65X, AFS67X, AFR677 devices: For all vulnerabilities, apply mitigation strategy as described in Hitachi Energy's general mitigation factors below or update to AFS65X, AFS67X, AFR677 09.1.08 FW. Disable HTTP/HTTPS server or restrict access to HTTP/HTTPS to trusted IP addresses. Disable IEC61850-MMS server.
- FixedSIMATIC S7-1500 CPU 1518-4 PN/DP MFP (6ES7518-4AX00-1AB0)cisa_csaf_ot
Update to V3.1.5 or later version
https://support.industry.siemens.com/cs/ww/en/view/109478459/ - FixedSIMATIC S7-1500 CPU 1518-4 PN/DP MFP (6ES7518-4AX00-1AC0)cisa_csaf_ot
Update to V3.1.5 or later version
https://support.industry.siemens.com/cs/ww/en/view/109478459/ - FixedSIMATIC S7-1500 CPU 1518F-4 PN/DP MFP (6ES7518-4FX00-1AB0)cisa_csaf_ot
Update to V3.1.5 or later version
https://support.industry.siemens.com/cs/ww/en/view/109478459/ - FixedSIMATIC S7-1500 CPU 1518F-4 PN/DP MFP (6ES7518-4FX00-1AC0)cisa_csaf_ot
Update to V3.1.5 or later version
https://support.industry.siemens.com/cs/ww/en/view/109478459/ - FixedSIPLUS S7-1500 CPU 1518-4 PN/DP MFP (6AG1518-4AX00-4AC0)cisa_csaf_ot
Update to V3.1.5 or later version
https://support.industry.siemens.com/cs/ww/en/view/109478459/ - MitigationPROFINET SDKphoenix_contact_psirt
The PROFINET SDK includes an Engineering tool as reference solution to generate Profinet configuration IPPNIO or TIC XML files. This configuration is transferred to a device running the Profinet stack and loaded during startup of the Profinet stack. When the IPPNIO or TIC files are transferred via an untrusted environment (e.g.: Network or e-Mail, …) an attacker knowing these vulnerabilities mentioned above might manipulate the files in a specific way to gain access to the device. To mitigate these vulnerabilities the integrity and authenticity of the configuration data it must be ensured by transferring the data only via trusted connections. Advice's how to ensure trusted connections can be found in the following document:Measures to protect network-capable devices with Ethernet connection. Companies which are using their own configuration system instead of the reference solution are not affected as long they don't utilize the related libexpat library. We kindly advise you to check if in your specific configuration tool chain, the libexpat library is used or version number is 2.4.6. or higher.
- Mitigationphoenix_contact_psirt
Phoenix Contact recommends operating network-capable devices in closed networks or protected with a suitable firewall. For detailed information on our recommendations for measures to protect network-capable devices, please refer to our application note:Measures to protect network-capable devices with Ethernet connection
- MitigationAFF66X FWcisa_csaf_ot
Hitachi Energy's general mitigation factors:Security practices and firewall configurations can help protect a process control network from attacks that originate from outside the network. Such practices include that process control systems are physically protected from direct access by unauthorized personnel, have no direct connections to the Internet, and are separated from other networks by means of a firewall system that has a minimal number of ports exposed, and others that have to be evaluated case by case. Process control systems should not be used for Internet surfing, instant messaging, or receiving e-mails. Portable computers and removable storage media should be carefully scanned for viruses before they are connected to a control system.
- MitigationAFR677cisa_csaf_ot
Hitachi Energy's general mitigation factors:Security practices and firewall configurations can help protect a process control network from attacks that originate from outside the network. Such practices include that process control systems are physically protected from direct access by unauthorized personnel, have no direct connections to the Internet, and are separated from other networks by means of a firewall system that has a minimal number of ports exposed, and others that have to be evaluated case by case. Process control systems should not be used for Internet surfing, instant messaging, or receiving e-mails. Portable computers and removable storage media should be carefully scanned for viruses before they are connected to a control system.
- MitigationAFS65Xcisa_csaf_ot
Hitachi Energy's general mitigation factors:Security practices and firewall configurations can help protect a process control network from attacks that originate from outside the network. Such practices include that process control systems are physically protected from direct access by unauthorized personnel, have no direct connections to the Internet, and are separated from other networks by means of a firewall system that has a minimal number of ports exposed, and others that have to be evaluated case by case. Process control systems should not be used for Internet surfing, instant messaging, or receiving e-mails. Portable computers and removable storage media should be carefully scanned for viruses before they are connected to a control system.
- MitigationAFS660-Ccisa_csaf_ot
Hitachi Energy's general mitigation factors:Security practices and firewall configurations can help protect a process control network from attacks that originate from outside the network. Such practices include that process control systems are physically protected from direct access by unauthorized personnel, have no direct connections to the Internet, and are separated from other networks by means of a firewall system that has a minimal number of ports exposed, and others that have to be evaluated case by case. Process control systems should not be used for Internet surfing, instant messaging, or receiving e-mails. Portable computers and removable storage media should be carefully scanned for viruses before they are connected to a control system.
- MitigationAFS66X-Bcisa_csaf_ot
Hitachi Energy's general mitigation factors:Security practices and firewall configurations can help protect a process control network from attacks that originate from outside the network. Such practices include that process control systems are physically protected from direct access by unauthorized personnel, have no direct connections to the Internet, and are separated from other networks by means of a firewall system that has a minimal number of ports exposed, and others that have to be evaluated case by case. Process control systems should not be used for Internet surfing, instant messaging, or receiving e-mails. Portable computers and removable storage media should be carefully scanned for viruses before they are connected to a control system.
- MitigationAFS66X-Scisa_csaf_ot
Hitachi Energy's general mitigation factors:Security practices and firewall configurations can help protect a process control network from attacks that originate from outside the network. Such practices include that process control systems are physically protected from direct access by unauthorized personnel, have no direct connections to the Internet, and are separated from other networks by means of a firewall system that has a minimal number of ports exposed, and others that have to be evaluated case by case. Process control systems should not be used for Internet surfing, instant messaging, or receiving e-mails. Portable computers and removable storage media should be carefully scanned for viruses before they are connected to a control system.
- MitigationAFS670-V20cisa_csaf_ot
Hitachi Energy's general mitigation factors:Security practices and firewall configurations can help protect a process control network from attacks that originate from outside the network. Such practices include that process control systems are physically protected from direct access by unauthorized personnel, have no direct connections to the Internet, and are separated from other networks by means of a firewall system that has a minimal number of ports exposed, and others that have to be evaluated case by case. Process control systems should not be used for Internet surfing, instant messaging, or receiving e-mails. Portable computers and removable storage media should be carefully scanned for viruses before they are connected to a control system.
- MitigationAFS67Xcisa_csaf_ot
Hitachi Energy's general mitigation factors:Security practices and firewall configurations can help protect a process control network from attacks that originate from outside the network. Such practices include that process control systems are physically protected from direct access by unauthorized personnel, have no direct connections to the Internet, and are separated from other networks by means of a firewall system that has a minimal number of ports exposed, and others that have to be evaluated case by case. Process control systems should not be used for Internet surfing, instant messaging, or receiving e-mails. Portable computers and removable storage media should be carefully scanned for viruses before they are connected to a control system.
- MitigationSIMATIC S7-1500 CPU 1518-4 PN/DP MFP (6ES7518-4AX00-1AB0)cisa_csaf_ot
Only build and run applications from trusted sources.
- MitigationSIMATIC S7-1500 CPU 1518-4 PN/DP MFP (6ES7518-4AX00-1AC0)cisa_csaf_ot
Only build and run applications from trusted sources.
- MitigationSIMATIC S7-1500 CPU 1518F-4 PN/DP MFP (6ES7518-4FX00-1AB0)cisa_csaf_ot
Only build and run applications from trusted sources.
- MitigationSIMATIC S7-1500 CPU 1518F-4 PN/DP MFP (6ES7518-4FX00-1AC0)cisa_csaf_ot
Only build and run applications from trusted sources.
- MitigationSIPLUS S7-1500 CPU 1518-4 PN/DP MFP (6AG1518-4AX00-4AC0)cisa_csaf_ot
Only build and run applications from trusted sources.
cvss
Technical severity, 0–10. One row per scoring source.
base score 0–10 · higher = more severe · hover a vector to decode⚠ sources disagree · high–critical · 7.5–9.8
ssvc
A stakeholder decision — act, attend, or track — from exploitation and impact.
weaknesses
The CWE weakness classes this flaw belongs to.
exploits (1)
Public proof-of-concept and weaponised exploit code.
affected products (75)
Products and version ranges known to be affected.
- Siemens SIMATIC S7-1500 CPU 1518-4 PN/DP MFP (6ES7518-4AX00-1AB0)≤ vers:intdot/>=3.1.0|<3.1.5cisa_csaf_otUS
- Siemens SIMATIC S7-1500 CPU 1518-4 PN/DP MFP (6ES7518-4AX00-1AC0)≤ vers:intdot/>=3.1.0|<3.1.5cisa_csaf_otUS
- Siemens SIMATIC S7-1500 CPU 1518F-4 PN/DP MFP (6ES7518-4FX00-1AB0)≤ vers:intdot/>=3.1.0|<3.1.5cisa_csaf_otUS
- Siemens SIMATIC S7-1500 CPU 1518F-4 PN/DP MFP (6ES7518-4FX00-1AC0)≤ vers:intdot/>=3.1.0|<3.1.5cisa_csaf_otUS
- Siemens SIPLUS S7-1500 CPU 1518-4 PN/DP MFP (6AG1518-4AX00-4AC0)≤ vers:intdot/>=3.1.0|<3.1.5cisa_csaf_otUS
advisories (15)
Vendor and ecosystem advisories describing this.
- SSA-398330SSA-398330: Vulnerabilities in the additional GNU/Linux subsystem of the SIMATIC S7-1500 CPU 1518(F)-4 PN/DP MFP >= V3.1.0 and < V3.1.52023-12-12csaf · siemens_psirtDE
Multiple vulnerabilities have been identified in the additional GNU/Linux subsystem of the firmware version >= V3.1.0 and < V3.1.5 for the SIMATIC S7-1500 CPU 1518(F)-4 PN/DP MFP (incl. SIPLUS variant). These GNU/Linux vulnerabilities have been externally identified. Siemens has released new versions for the affected products and recommends to update to the latest versions. SIMATIC S7-1500 CPU 1518(F)-4 PN/DP MFP >= V3.1.0 and < V3.1.5 are no longer maintained and there won't be any update to the CVE list anymore. Please update to the latest version. Note: This SSA advises vulnerabilities for firmware version V3.1 only; for versions < V3.1 refer to Siemens Security Bulletin SSB-439005 (https://cert-portal.siemens.com/productcert/html/ssb-439005.html).
- SSA-484086SSA-484086: Multiple Vulnerabilities in SINEMA Remote Connect Server before V3.12022-06-14csaf · siemens_psirtDE
SINEMA Remote Connect Server is affected by multiple vulnerabilities, including - A cross-site scripting vulnerability in an error message pop up window (CVE-2022-29034) - Several authentication bypass, privilege escalation and integrity check vulnerabilities (CVE-2022-32251 through -32261) - A command injection vulnerability in the file upload service (CVE-2022-32262) - A chosen-plaintext attack against HTTP over TLS ("BREACH", CVE-2022-27221) - Information disclosure vulnerabilities in the curl component (CVE-2021-22924 through -22925) - Several vulnerabilities in the libexpat library, that could be exploited when the server is parsing untrusted XML files (CVE-2021-45960, CVE-2021-46143, CVE-2022-22822 through -22827, CVE-2022-23852, CVE-2022-23990, CVE-2022-25235 through -25236, CVE-2022-25313 through -25315. Siemens has released an update for the SINEMA Remote Connect Server and recommends to update to the latest version. Note that the update also contains additional fixes for vulnerabilities documented in Siemens Security Advisories SSA-244969, SSA-539476, SSA-685781 and SSA-712929.
- VDE-2022-005PHOENIX CONTACT: Vulnerabilities in XML parser library Expat (libexpat)2022-03-30csaf · phoenix_contact_psirtDE
Several vulnerabilities have been discovered in the Expat XML parser library (aka libexpat).This open-source component is widely used in a lot of products worldwide.A remote, anonymous attacker could use an integer overflow to execute arbitrary program code when loading specially crafted XML files. Profinet SDK is using XML parser library Expat as reference solution for loading the XML based Profinet network configuration files (IPPNIO or TIC).
- VDE-2022-046PHOENIX CONTACT: Multiple Linux component vulnerabilities in PLCnext Firmware2022-11-10csaf · phoenix_contact_psirtDE
UPDATE A: Two devices (ENERGY AXC PU, SMARTRTU AXC SG) added (24.11.2022) Update for PLCnext Firmware containing fixes for recent vulnerability findings in Linux components and security enhancements. PLCnext Control AXC F x152 is certified according to IEC 62443-4-1 and IEC 62443-4-2. This certification requires that all third-party components used in the firmware are regularly checked for known vulnerabilities.
- WID-SEC-W-2022-0062expat: Mehrere Schwachstellen ermöglichen Umgehen von SicherheitsvorkehrungenDeutsch2022-02-15csaf · cert_bundDE
Ein Angreifer kann mehrere Schwachstellen in expat ausnutzen, um Sicherheitsvorkehrungen zu umgehen.
- WID-SEC-W-2022-0302Xerox FreeFlow Print Server: Mehrere Schwachstellen ermöglichen Ausführen von beliebigem Programmcode mit AdministratorrechtenDeutsch2022-06-14csaf · cert_bundDE
Ein entfernter, authentisierter Angreifer kann mehrere Schwachstellen in Xerox FreeFlow Print Server ausnutzen, um beliebigen Programmcode auszuführen, einen Cross-Site-Scripting-Angriff durchzuführen, Informationen offenzulegen, einen Denial-of-Service-Zustand zu verursachen oder Dateien zu manipulieren.
- WID-SEC-W-2022-0432Xerox FreeFlow Print Server: Mehrere SchwachstellenDeutsch2022-06-21csaf · cert_bundDE
Ein entfernter, authentisierter Angreifer kann mehrere Schwachstellen in Xerox FreeFlow Print Server ausnutzen, um die Vertraulichkeit, Verfügbarkeit und Integrität zu gefährden.
- WID-SEC-W-2022-0457IBM DB2: Mehrere SchwachstellenDeutsch2022-06-23csaf · cert_bundDE
Ein lokaler Angreifer kann mehrere Schwachstellen in IBM DB2 ausnutzen, um beliebigen Programmcode auszuführen oder einen Denial of Service Zustand herbeizuführen.
- WID-SEC-W-2022-1335Xerox FreeFlow Print Server: Mehrere SchwachstellenDeutsch2022-09-07csaf · cert_bundDE
Ein entfernter, anonymer Angreifer kann mehrere Schwachstellen in Xerox FreeFlow Print Server ausnutzen, um die Vertraulichkeit, Verfügbarkeit und Integrität des Systems zu gefährden.
- WID-SEC-W-2023-1969HPE Fabric OS: Mehrere Schwachstellen ermöglichen PrivilegieneskalationDeutsch2023-08-06csaf · cert_bundDE
Ein entfernter, anonymer Angreifer kann mehrere Schwachstellen in HPE Fabric OS für HPE Fibre Channel und SAN Switches ausnutzen, um seine Privilegien zu erhöhen, Informationen offenzulegen oder einen Denial of Service Zustand herbeizuführen.
- WID-SEC-W-2023-2639Hitachi Energy AFS: Mehrere SchwachstellenDeutsch2023-10-12csaf · cert_bundDE
Ein Angreifer kann mehrere Schwachstellen in Hitachi Energy AFS ausnutzen, um beliebigen Code auszuführen, einen Denial-of-Service-Zustand zu verursachen oder vertrauliche Informationen offenzulegen.
- WID-SEC-W-2024-1591Juniper JUNOS: Mehrere SchwachstellenDeutsch2024-07-10csaf · cert_bundDE
Ein Angreifer kann mehrere Schwachstellen in Juniper JUNOS ausnutzen, um einen Denial of Service zu verursachen, Informationen offenzulegen, Privilegien zu erweitern und Sicherheitsmechanismen inklusive zu umgehen.
- ICSA-22-167-17Siemens OpenSSL Affecting Industrial Products2022-06-14icsa · cisa_csaf_otUS
SINEMA Remote Connect Server is affected by multiple vulnerabilities, including - A cross-site scripting vulnerability in an error message pop up window (CVE-2022-29034) - Several authentication bypass, privilege escalation and integrity check vulnerabilities (CVE-2022-32251 through -32261) - A command injection vulnerability in the file upload service (CVE-2022-32262) - A chosen-plaintext attack against HTTP over TLS ("BREACH", CVE-2022-27221) - Information disclosure vulnerabilities in the curl component (CVE-2021-22924 through -22925) - Several vulnerabilities in the libexpat library, that could be exploited when the server is parsing untrusted XML files (CVE-2021-45960, CVE-2021-46143, CVE-2022-22822 through -22827, CVE-2022-23852, CVE-2022-23990, CVE-2022-25235 through -25236, CVE-2022-25313 through -25315. Siemens has released an update for the SINEMA Remote Connect Server and recommends to update to the latest version. Note that the update also contains additional fixes for vulnerabilities documented in Siemens Security Advisories SSA-244969, SSA-539476, SSA-685781 and SSA-712929.
- ICSA-23-278-01Hitachi Energy AFS65x,AFF66x, AFS67x, and AFR67x Series Products2023-10-05icsa · cisa_csaf_otUS
Successful exploitation of these vulnerabilities by an attacker could have a high impact on availability, integrity, and confidentiality of the targeted devices.
- ICSA-23-348-10Siemens SIMATIC S7-15002023-12-12icsa · cisa_csaf_otUS
Multiple vulnerabilities have been identified in the additional GNU/Linux subsystem of the firmware version >= V3.1.0 and < V3.1.5 for the SIMATIC S7-1500 CPU 1518(F)-4 PN/DP MFP (incl. SIPLUS variant). These GNU/Linux vulnerabilities have been externally identified. Siemens has released new versions for the affected products and recommends to update to the latest versions. Note: This SSA advises vulnerabilities for firmware version V3.1 only; for versions < V3.1 refer to Siemens Security Bulletin SSB-439005 ( https://cert-portal.siemens.com/productcert/html/ssb-439005.html).
also known as (4)
Other names and identifiers for this entity.
sources
Which sources assert this record, and when.
references (100)
External citations — patches, advisories, analysis.
- http://www.openwall.com/lists/oss-security/2022/02/19/1cnnvd
- https://access.redhat.com/security/cve/cve-2022-25235cnnvd
- https://cert-portal.siemens.com/productcert/pdf/ssa-484086.pdfcnnvd
- https://github.com/libexpat/libexpat/pull/562cnnvd
- https://github.com/libexpat/libexpat/releases/tag/R_2_4_5Patchcnnvd
- https://lists.debian.org/debian-lts-announce/2022/03/msg00007.htmlcnnvd
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/3UFRBA3UQVIQKXTBUQXDWQOVWNBKLERU/cnnvd
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/Y27XO3JMKAOMQZVPS3B4MJGEAHCZF5OM/cnnvd
Attackers weaponise vulnerabilities like this against internet-exposed services. See what is exposed on your perimeter with a free passive scan.
Free scan