CVE-2022-22753

A Time-of-Check Time-of-Use bug existed in the Maintenance (Updater) Service that could be abused to grant Users write access to an arbitrary directory. This could have been used to escalate to SYSTEM access.<br>*This bug only affects Firefox on Windows. Other operating systems are unaffected.*. This vulnerability affects Firefox < 97, Thunderbird < 91.6, and Firefox ESR < 91.6.

Affected

Mozilla · Firefox · Thunderbird · Firefox ESR

CVSS v3.1 NVD

7.1 HIGHCVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:U/C:H/I:H/A:H

EPSS

0.63% chance of exploitation in the next 30 days, 49th percentile

Published

2022-12-22

Updated

2025-04-16

Proof-of-concept exploits (1)

• https://bugzilla.mozilla.org/show_bug.cgi?id=1732435

Security advisories

• https://www.mozilla.org/security/advisories/mfsa2022-04
• https://www.mozilla.org/security/advisories/mfsa2022-05
• https://www.mozilla.org/security/advisories/mfsa2022-06

References

• CVE Record
• NVD entry