CVE-2026-81625 Stack buffer overflow in Greenbone OS and openvas-scanner
A remote attacker with user privileges can trigger a stack buffer overflow via a malicious NASL test, leading to full system access.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-81625?
CVE-2026-81625 is a high-severity memory corruption vulnerability in Greenbone OS, published on 27 Aug 2026. Any signed-in user can exploit it over the network, with no action from the victim.
Official description
A remote attacker with user privileges may use a malicious or compromised NASL vulnerability test (VT) on the affected products to trigger a stack buffer overflow and gain full access on the compromised system.
Weakness: CWE-787
Which versions are affected by CVE-2026-81625?
How do I fix CVE-2026-81625?
No fix has been published for CVE-2026-81625 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-2026-81625 being exploited?
There is no known exploitation of CVE-2026-81625 in the wild and no public exploit code.
Sources
Also known as GHSA-fgmh-w4xc-3q4h.