CVE-2024-8176
highpriority · track · 10EPSS 0.014 · 71 %ileexploit · PoCDEEUNLRUUSEPSS · scored 2026-10-22
A stack overflow vulnerability exists in the libexpat library due to the way it handles recursive entity expansion in XML documents. When parsing an XML document with deeply nested entity references, libexpat can be forced to recurse indefinitely, exhausting the stack space and causing a crash. This issue could lead to denial of service (DoS) or, in some cases, exploitable memory corruption, depending on the environment and library usage.
remediations
Vendor fix, mitigation, or workaround guidance, as published by each source.
A vendor fix is available.
- FixedRUGGEDCOM RST2428P (6GK6242-6PA00)siemens_psirt
Update to V3.2 or later version
https://support.industry.siemens.com/cs/ww/en/view/109988839/ - FixedSCALANCE XC-300/XR-300/XC-400/XR-500WG/XR-500 familysiemens_psirt
See Section Additional Information.
- FixedSCALANCE XCM-/XRM-/XCH-/XRH-300 familysiemens_psirt
Update to V3.2 or later version
https://support.industry.siemens.com/cs/ww/en/view/109988839/ - 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/ - FixedFirmware < 2025.0.2 installed on AXC F 1152phoenix_contact_psirt
Update to the latest 2025.0.2 Firmware Release. PHOENIX CONTACT recommends to always use an up-to-date version of the PLCnext Engineer.
- FixedFirmware < 2025.0.2 installed on AXC F 2152phoenix_contact_psirt
Update to the latest 2025.0.2 Firmware Release. PHOENIX CONTACT recommends to always use an up-to-date version of the PLCnext Engineer.
- FixedFirmware < 2025.0.2 installed on AXC F 3152phoenix_contact_psirt
Update to the latest 2025.0.2 Firmware Release. PHOENIX CONTACT recommends to always use an up-to-date version of the PLCnext Engineer.
- FixedFirmware < 2025.0.2 installed on BPC 9102Sphoenix_contact_psirt
Update to the latest 2025.0.2 Firmware Release. PHOENIX CONTACT recommends to always use an up-to-date version of the PLCnext Engineer.
- FixedFirmware < 2025.0.2 installed on RFC 4072Sphoenix_contact_psirt
Update to the latest 2025.0.2 Firmware Release. PHOENIX CONTACT recommends to always use an up-to-date version of the PLCnext Engineer.
- 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/ - FixedRUGGEDCOM RST2428P (6GK6242-6PA00)cisa_csaf_ot
Update to V3.2 or later version
https://support.industry.siemens.com/cs/ww/en/view/109988839/ - FixedSCALANCE XC-300/XR-300/XC-400/XR-500WG/XR-500 familycisa_csaf_ot
See Section Additional Information.
- FixedSCALANCE XCM-/XRM-/XCH-/XRH-300 familycisa_csaf_ot
Update to V3.2 or later version
https://support.industry.siemens.com/cs/ww/en/view/109988839/ - FixedRTU500 series CMU Firmwarecisa_csaf_ot
Update to CMU Firmware version 12.7.8
- FixedITT600 Explorercisa_csaf_ot
Update to version 2.1 SP6 HF1
- FixedREB500cisa_csaf_ot
Update to version 8.3.4.0
- 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.
- MitigationRTU500 series CMU Firmwarecisa_csaf_ot
Follow general mitigation factors/workarounds
cvss
Technical severity, 0–10. One row per scoring source.
base score 0–10 · higher = more severe · hover a vector to decode
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.
- uthrasri/Expat_2.6.2_CVE-2024-8176uthrasri/Expat_2.6.2_CVE-2024-8176PoC · poc_in_github
affected products (137)
Products and version ranges known to be affected.
- Hitachi Energy RTU500 series CMU Firmware≤ vers:RTU500_series_CMU_Firmware/>=12.7.1|<=12.7.7cisa_csaf_otUS
- Hitachi Energy RTU500 series CMU Firmware≤ vers:RTU500_series_CMU_Firmware/>=13.5.1|<=13.5.4cisa_csaf_otUS
- Hitachi Energy RTU500 series CMU Firmware≤ vers:RTU500_series_CMU_Firmware/>=13.6.1|<=13.6.2cisa_csaf_otUS
- Hitachi Energy RTU500 series CMU Firmware≤ vers:RTU500_series_CMU_Firmware/>=13.7.1|<=13.7.7cisa_csaf_otUS
advisories (22)
Vendor and ecosystem advisories describing this.
- NCSC-2025-0123Kwetsbaarheden verholpen in Oracle Database ProductenNL2025-04-16csaf · ncsc_nlNL
Oracle heeft kwetsbaarheden verholpen in diverse Oracle Database Producten en subsystemen, zoals Oracle Server, NoSQL, TimesTen, Secure Backup en Essbase.
- NCSC-2025-0150Kwetsbaarheden verholpen in Apple iOS en iPadOSNL2025-05-13csaf · ncsc_nlNL
Apple heeft kwetsbaarheden verholpen in iOS en iPadOS.
- NCSC-2025-0151Kwetsbaarheden verholpen in Apple macOSNL2025-05-13csaf · ncsc_nlNL
Apple heeft kwetsbaarheden verholpen in macOS (Specifiek voor Ventura 13.7.6, Sequoia 15.5 en Sonoma 14.7.6).
- SSA-355557SSA-355557: Multiple Vulnerabilities in Third-Party Components in SINEC OS before V3.22025-08-12csaf · siemens_psirtDE
SINEC OS before V3.2 contains third-party components with multiple vulnerabilities. Siemens has released new versions for the affected products and recommends to update to the latest versions.
- 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).
- VDE-2025-053Phoenix Contact: Multiple Vulnerabilities in PLCnext Firmware2025-07-08csaf · phoenix_contact_psirtDE
Multiple Linux component vulnerabilities fixed in latest PLCnext Firmware release 2025.0.2
- WID-SEC-W-2025-0562expat: Schwachstelle ermöglicht Denial of ServiceDeutsch2025-03-13csaf · cert_bundDE
Ein entfernter, anonymer Angreifer kann eine Schwachstelle in expat ausnutzen, um einen Denial of Service Angriff durchzuführen.
- WID-SEC-W-2025-0859Tenable Security Nessus: Mehrere SchwachstellenDeutsch2025-04-21csaf · cert_bundDE
Ein entfernter Angreifer kann mehrere Schwachstellen in Tenable Security Nessus ausnutzen, um Daten zu manipulieren, seine Privilegien zu erweitern und um nicht näher spezifizierte Auswirkungen zu erzielen.
- WID-SEC-W-2025-1003Apple iOS und iPadOS: Mehrere SchwachstellenDeutsch2025-05-12csaf · cert_bundDE
Ein entfernter, anonymer Angreifer kann mehrere Schwachstellen in Apple iOS und Apple iPadOS ausnutzen, um erweiterte Rechte zu erlangen, beliebigen Code auszuführen, einen Denial-of-Service-Zustand zu verursachen, vertrauliche Informationen preiszugeben oder Spoofing-Angriffe durchzuführen.
- WID-SEC-W-2025-1007Apple macOS: Mehrere SchwachstellenDeutsch2025-05-12csaf · cert_bundDE
Ein entfernter anonymer Angreifer kann mehrere Schwachstellen in Apple macOS ausnutzen, um erhöhte Privilegien zu erlangen, vertrauliche Informationen offenzulegen, beliebigen Code auszuführen, Daten zu manipulieren, Sicherheitsmaßnahmen zu umgehen oder einen Denial-of-Service-Zustand auszulösen.
- WID-SEC-W-2025-1365IBM QRadar SIEM: Mehrere SchwachstellenDeutsch2025-06-19csaf · cert_bundDE
Ein entfernter, anonymer Angreifer kann mehrere Schwachstellen in IBM QRadar SIEM ausnutzen, um Informationen offenzulegen, einen Denial of Service Zustand herbeizuführen, um beliebige Befehle auszuführen und um nicht näher spezifizierte Auswirkungen zu verursachen.
- WID-SEC-W-2025-1439Dell Secure Connect Gateway: Mehrere Schwachstellen ermöglichen nicht spezifizierten AngriffDeutsch2025-06-30csaf · cert_bundDE
Ein Angreifer kann mehrere Schwachstellen in Dell Secure Connect Gateway ausnutzen, um einen nicht näher spezifizierten Angriff durchzuführen.
- WID-SEC-W-2025-1555Oracle Financial Services Applications: Mehrere SchwachstellenDeutsch2025-07-15csaf · cert_bundDE
Ein entfernter, anonymer oder authentisierter Angreifer kann mehrere Schwachstellen in Oracle Financial Services Applications ausnutzen, um die Vertraulichkeit, Integrität und Verfügbarkeit zu gefährden.
- WID-SEC-W-2025-1559Oracle Communications: Mehrere SchwachstellenDeutsch2025-07-15csaf · cert_bundDE
Ein entfernter, anonymer oder authentisierter Angreifer kann mehrere Schwachstellen in Oracle Communications ausnutzen, um die Vertraulichkeit, Integrität und Verfügbarkeit zu gefährden.
- WID-SEC-W-2025-1560Oracle Communications Applications: Mehrere SchwachstellenDeutsch2025-07-15csaf · cert_bundDE
Ein entfernter, anonymer oder authentisierter Angreifer kann mehrere Schwachstellen in Oracle Communications Applications ausnutzen, um die Vertraulichkeit, Integrität und Verfügbarkeit zu gefährden.
- WID-SEC-W-2025-1572Oracle Fusion Middleware: Mehrere SchwachstellenDeutsch2025-07-15csaf · cert_bundDE
Ein entfernter, anonymer oder authentisierter Angreifer kann mehrere Schwachstellen in Oracle Fusion Middleware ausnutzen, um die Vertraulichkeit, Integrität und Verfügbarkeit zu gefährden.
- WID-SEC-W-2025-1850Xerox FreeFlow Print Server: Mehrere Schwachstellen ermöglichen nicht spezifizierten AngriffDeutsch2025-08-14csaf · cert_bundDE
Ein Angreifer kann mehrere Schwachstellen in Xerox FreeFlow Print Server ausnutzen, um einen nicht näher spezifizierten Angriff durchzuführen.
- 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).
- ICSA-25-226-07Siemens Third-Party Components in SINEC OS2025-08-12icsa · cisa_csaf_otUS
SINEC OS before V3.2 contains third-party components with multiple vulnerabilities. Siemens has released new versions for the affected products and recommends to update to the latest versions.
- ICSA-26-062-03Hitachi Energy RTU500 Product (Update A)2026-02-24icsa · cisa_csaf_otUS
Hitachi Energy is aware of vulnerabilities that affect RTU500 product versions listed in this document. Successful exploitation of these vulnerabilities can result in the exposure of low-value user management information and device outage. Please refer to the Recommended Immediate Actions for information about the mitigation/remediation.
- ICSA-26-155-02Hitachi Energy ITT600 Explorer2026-05-26icsa · cisa_csaf_otUS
Hitachi Energy is aware of vulnerabilities that affect ITT600 Explorer product versions listed in this document. These vulnerabilities can be exploited to carry out Denial of Service (DoS) attack on the product. The vulnerabilities only affect Hitachi Energy Integrated Testing Tool ITT600 SA Explorer without affecting IEC 61850 system endpoints. Please refer to the Recommended Immediate Actions for information about the mitigation/remediation.
- ICSA-26-279-05Hitachi Energy REB5002026-09-29icsa · cisa_csaf_otUS
Hitachi Energy is aware of open-source software vulnerabilities that affect REB500 product versions listed in this document. These vulnerabilities can be exploited to carry out Denial of Service (DoS) attack on the product. Please refer to the Recommended Immediate Actions for information about the mitigation/remediation.
also known as (4)
Other names and identifiers for this entity.
sources
Which sources assert this record, and when.
references (70)
External citations — patches, advisories, analysis.
- http://www.openwall.com/lists/oss-security/2025/03/15/1cnnvd
- https://access.redhat.com/security/cve/CVE-2024-8176cnnvd
- https://bugzilla.redhat.com/show_bug.cgi?id=2310137cnnvd
- https://github.com/libexpat/libexpat/issues/893cnnvd
- https://nvd.nist.gov/vuln/detail/CVE-2024-8176cnnvd
- https://www.oracle.com/security-alerts/cpujul2025.htmlcnnvd
- https://access.redhat.com/errata/RHSA-2025:13681enisa_euvd
- https://access.redhat.com/errata/RHSA-2025:22033enisa_euvd
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