CVE-2022-22753
Mozilla: Privilege Escalation to SYSTEM on Windows via Maintenance Service
Severity
ImportantRed Hat Product Security
CVSS 3.1
Review impact separately from score.
Published · February 8, 2022
Updated · November 21, 2025
Description
The Mozilla Foundation Security Advisory describes this flaw as:
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. This bug only affects Firefox on Windows. Other operating systems are unaffected.
CVSS score applicability
The CVSS score(s) listed for this vulnerability do not reflect the associated product's status, and are included for informational purposes to better understand the severity of this vulnerability.
Mitigation
No mitigation is specified in collected source.
CVSS / CWE
CVSS 3.1 · 7.5CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H
CWE-367 · Time-of-check Time-of-use (TOCTOU) Race Condition