CVE-2025-26790 Memory corruption in Atlant
Remote attackers can cause a denial of service in WithSecure Atlant via an out-of-bounds memory read during document processing.
- 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-2025-26790?
CVE-2025-26790 is a low-severity memory corruption vulnerability in WithSecure Atlant, published on 14 Sep 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
Withsecure Atlant with Capricorn engine before 2025-01-20_02 allows a Remote Denial of Service via an out-of-bounds memory read during processing of a document file by the antivirus engine.
Weakness: CWE-125
Which versions are affected by CVE-2025-26790?
How do I fix CVE-2025-26790?
No fix has been published for CVE-2025-26790 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-2025-26790 being exploited?
There is no known exploitation of CVE-2025-26790 in the wild and no public exploit code.
Sources
Also known as GHSA-28x7-ppgv-4277.