CVE-2026-8797 Privilege escalation in ExpressUpdate Agent for Windows
A malicious user with local access can execute arbitrary code with SYSTEM privileges due to an access control flaw in the ExpressUpdate Agent.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Local or same network only
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-8797?
CVE-2026-8797 is a high-severity vulnerability in NEC Corporation ExpressUpdate Agent for Windows, published on 26 Jun 2026. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
An access control deficiency vulnerability exists in ExpressUpdate Agent for Windows. If a malicious user gains access to the product, arbitrary code could be executed with SYSTEM privileges.
Weakness: CWE-782
Which versions are affected by CVE-2026-8797?
How do I fix CVE-2026-8797?
No fix has been published for CVE-2026-8797 yet. Limit exposure of the affected software until one is available.
Is CVE-2026-8797 being exploited?
There is no known exploitation of CVE-2026-8797 in the wild and no public exploit code.
Sources
Also known as GHSA-cxm7-54mf-pwwg.