CVE-2026-67866 Memory corruption in n/a
A remote attacker can cause a denial of service in the S2OPC library via a buffer overflow in the DeleteMonitoredItems client path.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-67866?
CVE-2026-67866 is a high-severity memory corruption vulnerability in n/a, published on 5 Aug 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
Buffer Overflow vulnerability in Systerel S2OPC 1.7.3 allows a remote attacker to cause a denial of service via the LockedStaMac_ProcessMsg_DeleteMonitoredItemsResponse and SOPC_StaMac_NewDeleteMonitoredItems in the client wrapper DeleteMonitoredItems path
Weakness: CWE-121
Which versions are affected by CVE-2026-67866?
How do I fix CVE-2026-67866?
No fix has been published for CVE-2026-67866 yet. Limit exposure of the affected software until one is available.
Upgrade to the fixed version. Memory-safe languages, compiler hardening and fuzzing prevent most new cases. More about Memory corruption.
Is CVE-2026-67866 being exploited?
There is no known exploitation of CVE-2026-67866 in the wild and no public exploit code.
Sources
Also known as GHSA-9m32-jq6f-7wh4.