CVE-2026-109704
Privilege escalation in the Application Update component.
Published Oct 13, 2026 · updated Oct 14, 2026
Privilege escalation in the Application Update component. This vulnerability was fixed in Firefox 158, Firefox ESR 153.5, Thunderbird 158, and Thunderbird 153.5.
Timeline
Detection, updates, and resolution for this record.
Oct 13, 2026 · NIST NVD
Detected
Privilege escalation in the Application Update component. This vulnerability was fixed in Firefox 158, Firefox ESR 153.5, Thunderbird 158, and Thunderbird 153.5.
Oct 14, 2026 · NIST NVD
Updated
Privilege escalation in the Application Update component. This vulnerability was fixed in Firefox 158, Firefox ESR 153.5, Thunderbird 158, and Thunderbird 153.5.
Sources
- CVE.orgCVE-2026-109704
Official CVE identifier
cve.org - FIRST EPSSCVE-2026-109704
30-day exploitation probability 0.2%
first.org - NIST NVDCVE-2026-109704
Privilege escalation in the Application Update component. This vulnerability was fixed in Firefox 158, Firefox ESR 153.5, Thunderbird 158, and Thunderbird 153.5.
nvd.nist.gov