CVE-2026-67869: n/a
A buffer overflow vulnerability exists in open62541 version 1.5.5 that allows a remote attacker to cause a denial of service. The issue arises from improper validation of input arguments in the Service_Call function against runtime-resolved InputArguments metadata.
AI Analysis
Technical Summary
The vulnerability identified as CVE-2026-67869 affects open62541 version 1.5.5. It is a buffer overflow (CWE-120) caused by the Service_Call function's inadequate validation of input arguments against metadata resolved at runtime. This flaw can be exploited remotely without authentication or user interaction to trigger a denial of service condition by crashing the application.
Potential Impact
Successful exploitation results in a denial of service (DoS) by crashing the affected open62541 service. There is no indication of confidentiality or integrity impact. The vulnerability has a CVSS v3.1 base score of 7.5, indicating high severity due to its remote, unauthenticated attack vector and impact on availability.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. No official fix or patch links are provided in the available data. Until a patch is available, users should monitor vendor communications for updates and consider mitigating exposure by restricting access to the affected service if feasible.
CVE-2026-67869: n/a
Description
A buffer overflow vulnerability exists in open62541 version 1.5.5 that allows a remote attacker to cause a denial of service. The issue arises from improper validation of input arguments in the Service_Call function against runtime-resolved InputArguments metadata.
CVSS v3.1
Score 7.5high
Affected software
pkg:github/open62541/open62541Run on your own infrastructure? Check whether these packages are installed with threat-finder — our free open-source scanner.
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
The vulnerability identified as CVE-2026-67869 affects open62541 version 1.5.5. It is a buffer overflow (CWE-120) caused by the Service_Call function's inadequate validation of input arguments against metadata resolved at runtime. This flaw can be exploited remotely without authentication or user interaction to trigger a denial of service condition by crashing the application.
Potential Impact
Successful exploitation results in a denial of service (DoS) by crashing the affected open62541 service. There is no indication of confidentiality or integrity impact. The vulnerability has a CVSS v3.1 base score of 7.5, indicating high severity due to its remote, unauthenticated attack vector and impact on availability.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. No official fix or patch links are provided in the available data. Until a patch is available, users should monitor vendor communications for updates and consider mitigating exposure by restricting access to the affected service if feasible.
Technical Details
- Gcve Source
- db.gcve.eu
- Osv Id
- GHSA-86h5-5qfw-5vr9
- Osv Schema Version
- 1.4.0
- Aliases
- ["CVE-2026-67869"]
- Ecosystems
- []
- Database Specific Severity
- HIGH
- Cvss Version
- 3.1
Threat ID: 6a74cfafbf8831d5391b24bb
Added to database: 08/06/2026, 18:17:19 UTC
Last enriched: 08/06/2026, 19:38:35 UTC
Last updated: 08/07/2026, 03:40:59 UTC
Views: 6
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