CVE-2020-25159
highpriority · track · 40EPSS 0.030 · 87 %ileDEEUUSEPSS · scored 2026-10-27
499ES EtherNet/IP (ENIP) Adaptor Source Code is vulnerable to a stack-based buffer overflow, which may allow an attacker to send a specially crafted packet that may result in a denial-of-service condition or code execution.
remediations
Vendor fix, mitigation, or workaround guidance, as published by each source.
A vendor fix is available.
- FixedFirmware 1.00.00 installed on Promass 83endress_hauser_psirt
Endress+Hauser provides updated firmware versions (Firmware versions >1.00.00) for the related product from the Proline portfolio which fixes the vulnerability. Endress+Hauser strongly recommends customers to update to the new fixed version. For support, please contact your local service center.
- Mitigationpepperl_fuchs_psirt
An external protective measure is required. - Minimize network exposure for affected products and ensure that they are not accessible via the Internet. - Isolate affected products from the corporate network. - If remote access is required, use secure methods such as virtual private networks (VPNs).
- MitigationFirmware 1.00.00 installed on Promass 83endress_hauser_psirt
If an immediate firmware update is not possible, the only way to prevent an attack is to disable communication via EtherNet/IP.
- Mitigation499ES EtherNet/IP Adaptor Source Code a TCP/IP stackcisa_csaf_ot
Please contact Real Time Automation for additional details and support.
https://www.rtautomation.com/support/
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
weaknesses
The CWE weakness classes this flaw belongs to.
affected products (9)
Products and version ranges known to be affected.
- rtautomation 499es ethernet/ip adaptor firmware< 2.28nvdUScpe:2.3:o:rtautomation:499es_ethernet\/ip_adaptor_firmware:*:*:*:*:*:*:*:*
advisories (3)
Vendor and ecosystem advisories describing this.
- VDE-2020-050Pepperl+Fuchs: Multiple Products - Vulnerability may allow remote attackers to cause a Denial Of Service2021-02-15csaf · pepperl_fuchs_psirtDE
Critical vulnerability has been discovered in the utilized component 499ES EtherNet/IP Stack by Real Time Automation (RTA).
- VDE-2021-040Endress+Hauser: Promass 83 with EtherNet/IP affected by a stack-based buffer overflow2021-10-04csaf · endress_hauser_psirtDE
Promass 83 devices utilizing 499ES EtherNet/IP (ENIP) Stack by Real Time Automation (RTA) are vulnerable to a stack-based buffer overflow. Update A, 2021-10-07: added credits changed title from "ENDRESS+HAUSER: Promass 83 with Ether/IP affected by DoS vulnerability" to "ENDRESS+HAUSER: Promass 83 with EtherNet/IP affected by a stack-based buffer overflow"
- ICSA-20-324-03Real Time Automation EtherNet/IP2020-11-17icsa · cisa_csaf_otUS
Successful exploitation of this vulnerability could cause a denial-of-service condition, and a buffer overflow may allow remote code execution.
also known as (3)
Other names and identifiers for this entity.
sources
Which sources assert this record, and when.
references (5)
External citations — patches, advisories, analysis.
- https://nvd.nist.gov/vuln/detail/CVE-2020-25159cnnvd
- https://us-cert.cisa.gov/ics/advisories/icsa-20-324-03cnnvd
- https://www.auscert.org.au/bulletins/ESB-2020.4087/cnnvd
- https://us-cert.cisa.gov/ics/advisories/icsa-20-324-03enisa_euvd
- https://us-cert.cisa.gov/ics/advisories/icsa-20-324-03Third Party AdvisoryUS Government Resourcenvd
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