CVE-2026-67869: n/a
A buffer overflow vulnerability exists in open62541 version 1.5.5. This flaw occurs in the Service_Call function, which validates input arguments against runtime-resolved InputArguments metadata. An unauthenticated remote attacker can exploit this vulnerability to cause a denial of service (DoS) condition. The vulnerability has a high severity rating with a CVSS score of 7.5. No official patch or remediation guidance is currently available.
AI Analysis
Technical Summary
CVE-2026-67869 describes a buffer overflow vulnerability in open62541 version 1.5.5. The issue arises from improper validation of input arguments in the Service_Call function against runtime-resolved InputArguments metadata. This allows a remote attacker to trigger a denial of service by causing the application to crash or become unresponsive. The vulnerability is identified as CWE-120 (Classic Buffer Overflow). There is no known exploit in the wild and no vendor advisory or patch has been published to date.
Potential Impact
Successful exploitation results in a denial of service, causing the affected open62541 service to crash or become unavailable. There is no indication of confidentiality or integrity impact. The attack requires no privileges and no user interaction, and can be performed remotely over the network.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until a fix is available, consider restricting access to the affected service to trusted networks and monitor for unusual service disruptions.
CVE-2026-67869: n/a
Description
A buffer overflow vulnerability exists in open62541 version 1.5.5. This flaw occurs in the Service_Call function, which validates input arguments against runtime-resolved InputArguments metadata. An unauthenticated remote attacker can exploit this vulnerability to cause a denial of service (DoS) condition. The vulnerability has a high severity rating with a CVSS score of 7.5. No official patch or remediation guidance is currently available.
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
CVE-2026-67869 describes a buffer overflow vulnerability in open62541 version 1.5.5. The issue arises from improper validation of input arguments in the Service_Call function against runtime-resolved InputArguments metadata. This allows a remote attacker to trigger a denial of service by causing the application to crash or become unresponsive. The vulnerability is identified as CWE-120 (Classic Buffer Overflow). There is no known exploit in the wild and no vendor advisory or patch has been published to date.
Potential Impact
Successful exploitation results in a denial of service, causing the affected open62541 service to crash or become unavailable. There is no indication of confidentiality or integrity impact. The attack requires no privileges and no user interaction, and can be performed remotely over the network.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until a fix is available, consider restricting access to the affected service to trusted networks and monitor for unusual service disruptions.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- mitre
- Date Reserved
- 2026-07-30T00:00:00.000Z
- Cvss Version
- 3.1
- State
- PUBLISHED
- Remediation Level
- null
Threat ID: 6a73c6b4bf8831d5399d0b77
Added to database: 08/05/2026, 23:26:44 UTC
Last enriched: 08/13/2026, 17:35:25 UTC
Last updated: 08/16/2026, 03:19:33 UTC
Views: 40
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