CVE-2026-67860 Memory corruption in n/a
A heap-based buffer overflow in open62541 allows attackers to execute arbitrary code or cause denial of service via crafted HistoryRead requests.
- 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-2026-67860?
CVE-2026-67860 is a high-severity memory corruption vulnerability in n/a, published on 4 Aug 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
open62541 1.5.5 contains a heap-based buffer overflow in the default HistoryRead path when the default history database is used with the memory backend.
Weakness: CWE-122
Which versions are affected by CVE-2026-67860?
How do I fix CVE-2026-67860?
No fix has been published for CVE-2026-67860 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-2026-67860 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-67860 exists.
Sources
Also known as DEBIAN-CVE-2026-67860, GHSA-9ww8-4h9r-47rr, UBUNTU-CVE-2026-67860.