CVE-2026-20893 Privilege escalation in Fujitsu Security Solution AuthConductor Client Basic V2
An attacker with local access can execute arbitrary code with SYSTEM privileges or modify registry values due to an origin validation error.
- 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-2026-20893?
CVE-2026-20893 is a high-severity vulnerability in Fujitsu Security Solution AuthConductor Client Basic V2, published on 7 Jan 2026. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
Origin validation error issue exists in Fujitsu Security Solution AuthConductor Client Basic V2 2.0.25.0 and earlier. If this vulnerability is exploited, an attacker who can log in to the Windows system where the affected product is installed may execute arbitrary code with SYSTEM privilege and/or modify the registry value.
Weakness: CWE-346
Which versions are affected by CVE-2026-20893?
How do I fix CVE-2026-20893?
No fix has been published for CVE-2026-20893 yet. Limit exposure of the affected software until one is available.
Is CVE-2026-20893 being exploited?
There is no known exploitation of CVE-2026-20893 in the wild and no public exploit code.
Sources
Also known as GHSA-h2fp-m732-cq75.