VulnerabilityAnalyzed
CVE-2022-26485
Mozilla Firefox Use-After-Free Vulnerability
KEVHIGH 8.8EPSS 14.3%
Does this matter?
Known to be exploited in the wild (CISA KEV, CISA remediation deadline 21 March 2022). Treat as an emergency change: patch or isolate now, then hunt for prior compromise.
Description
Removing an XSLT parameter during processing could have lead to an exploitable use-after-free. We have had reports of attacks in the wild abusing this flaw. This vulnerability affects Firefox < 97.0.2, Firefox ESR < 91.6.1, Firefox for Android < 97.3.0, Thunderbird < 91.6.2, and Focus < 97.3.0.
- CVSS 3.1
- 8.8 HIGHCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
- EPSS
- 14.26% probability · 96th percentile
- CISA KEV
- Listed 7 March 2022 · due 21 March 2022
- Weakness
- CWE-416
- Affected
- mozilla/firefox · mozilla/firefox focus · mozilla/firefox mobile · mozilla/thunderbird
- Source
- security@mozilla.org
CISA notes
Apply updates per vendor instructions. https://nvd.nist.gov/vuln/detail/CVE-2022-26485
References
- https://bugzilla.mozilla.org/show_bug.cgi?id=1758062Exploit, Issue Tracking, Vendor Advisory
- https://www.mozilla.org/security/advisories/mfsa2022-09/Vendor Advisory
- https://bugzilla.mozilla.org/show_bug.cgi?id=1758062Exploit, Issue Tracking, Vendor Advisory
- https://www.mozilla.org/security/advisories/mfsa2022-09/Vendor Advisory
- https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2022-26485US Government Resource
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.