CVE-2026-91813 Foxit PDF Editor/Reader FoxitUpdater Race Condition Local Privilege Escalation Vulnerability
Local attackers can exploit a race condition in the update mechanism to execute arbitrary code with elevated privileges.
- 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-2026-91813?
CVE-2026-91813 is a high-severity vulnerability in Foxit Pdf Editor, published on 23 Sep 2026. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
A vulnerability in Foxit PDF Editor/Reader’s update mechanism allows an update package to be replaced between download and high-privilege extraction due to insufficient file locking and integrity validation. This could enable local attackers to execute arbitrary code with elevated privileges.
Weakness: CWE-367
Which versions are affected by CVE-2026-91813?
It affects 2 products.
Products include Foxit Pdf Editor, Foxit Pdf Reader.
How do I fix CVE-2026-91813?
No fix has been published for CVE-2026-91813 yet. Limit exposure of the affected software until one is available.
Is CVE-2026-91813 being exploited?
There is no known exploitation of CVE-2026-91813 in the wild and no public exploit code.
Other vulnerabilities in Foxit Pdf Editor
Sources
Also known as GHSA-597r-vgr7-9622.