CVE-2022-22736

Severity: high (CVSS 7.0 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.2% probability of exploitation in the next 30 days
Public exploit or detection template: yes
Published: 2022-12-22 · updated 2026-06-17
Weakness: CWE-427

Description

If Firefox was installed to a world-writable directory, a local privilege escalation could occur when Firefox searched the current directory for system libraries. However the install directory is not world-writable by default.<br>*This bug only affects Firefox for Windows in a non-default installation. Other operating systems are unaffected.*. This vulnerability affects Firefox < 96.

Affected products

Mozilla Firefox: before 96.0 — fixed in 96.0

How to fix

Upgrade to a fixed version: Mozilla Firefox 96.0. Check the vendor advisory for mitigations.

References

https://bugzilla.mozilla.org/show_bug.cgi?id=1742692
https://www.mozilla.org/security/advisories/mfsa2022-01/
https://bugzilla.mozilla.org/show_bug.cgi?id=1742692
https://www.mozilla.org/security/advisories/mfsa2022-01/

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