CVE-2026-26456 Null dereference in n/a
A race condition in ccoap's session management causes a null pointer dereference, leading to denial of service.
- 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-2026-26456?
CVE-2026-26456 is a high-severity vulnerability in n/a, published on 27 Aug 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
A null pointer dereference vulnerability exists in the server-side session management logic of ccoap 77f55c4b466e99327c24ace8a2913d3ba7e2ccd5. The issue is caused by a race condition between the request dispatch thread and the session cleanup thread when accessing shared session list nodes without proper synchronization.
Which versions are affected by CVE-2026-26456?
How do I fix CVE-2026-26456?
No fix has been published for CVE-2026-26456 yet. Limit exposure of the affected software until one is available.
Is CVE-2026-26456 being exploited?
There is no known exploitation of CVE-2026-26456 in the wild and no public exploit code.
Sources
Also known as GHSA-59pv-qgfv-jx2f.