CVE-2026-109743: Privilege escalation in the Panning and Zooming component. This vulnerability was fixed in Firefox 158, Firefox ESR 153.5, Thunderbird 158, and Thunderbird…

PriorityP354high8.8CVSS 3.1

AVNACLPRLUINSUCHIHAH

EPSS

0.35%

27.2th percentile

Privilege escalation in the Panning and Zooming component. This vulnerability was fixed in Firefox 158, Firefox ESR 153.5, Thunderbird 158, and Thunderbird 153.5.

Affected

4 ranges

Vendor	Product	Version range	Fixed in
mozilla	firefox	< Firefox 158	Firefox 158
mozilla	firefox_esr	< Firefox ESR 153.5	Firefox ESR 153.5
mozilla	thunderbird	< Thunderbird 153.5	Thunderbird 153.5
mozilla	thunderbird	< Thunderbird 158	Thunderbird 158

Stop checking back — get the weekly exploitation signal.

Every Monday: what got weaponized or added to CISA KEV in the last seven days — each CVE cross-linked to its PoC, Nuclei template, and detection rule. Free, one email a week, unsubscribe in one click.