CVE-2026-91813
ZDI-26-742: Foxit PDF Reader FoxitUpdater Race Condition Local Privilege Escalation Vulnerability
Published Sep 23, 2026
This vulnerability allows local attackers to escalate privileges on affected installations of Foxit PDF Reader. An attacker must first obtain the ability to execute low-privileged code on the target system in order to exploit this vulnerability. The ZDI has assigned a CVSS rating of 7.8. The following CVEs are assigned: CVE-2026-91813.
Timeline
Detection, updates, and resolution for this record.
Sep 23, 2026 · Catalog
Detected
This vulnerability allows local attackers to escalate privileges on affected installations of Foxit PDF Reader. An attacker must first obtain the ability to execute low-privileged code on the target system in order to exploit this vulnerability. The ZDI has assigned a CVSS rating of 7.8. The following CVEs are assigned: CVE-2026-91813.
Sources
- CVE.orgCVE-2026-91813
Official CVE identifier
cve.org - FIRST EPSSCVE-2026-91813
30-day exploitation probability 0.1%
first.org - Zero Day InitiativeZDI-26-742
This vulnerability allows local attackers to escalate privileges on affected installations of Foxit PDF Reader. An attacker must first obtain the ability to execute low-privileged code on the target system in order to exploit this vulnerability. The ZDI has assigned a CVSS rating of 7.8. The following CVEs are assigned: CVE-2026-91813.
zerodayinitiative.com