CVEs / CVE-2022-26485
CVE-2022-26485: Mozilla Firefox Use-After-Free Vulnerability
- Known exploited in the CISA KEV catalog since 7 Mar 2022
- high 8.8 CVSS 3.1 (NVD)
- EPSS 14.2% chance of exploitation in the next 30 days, higher than 96% of CVEs (30 Oct 2026)
- Last changed at its sources
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Summary
Mozilla Firefox contains a use-after-free vulnerability in XSLT parameter processing which can be exploited to perform arbitrary code execution.
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.
Affected and fixed versions
| Product | Affected | Fixed in |
|---|---|---|
| Mozilla Firefox | from unspecified, before 97.0.2 | 97.0.2 |
| Mozilla Firefox ESR | from unspecified, before 91.6.1 | 91.6.1 |
| Mozilla Firefox for Android | from unspecified, before 97.3.0 | 97.3.0 |
| Mozilla Thunderbird | from unspecified, before 91.6.2 | 91.6.2 |
| Mozilla Focus | from unspecified, before 97.3.0 | 97.3.0 |
Exploitation
| In CISA KEV since | 7 Mar 2022 |
|---|---|
| Due date for US federal agencies | 21 Mar 2022 |
| Used in ransomware campaigns | Unknown |
| Required action | Apply updates per vendor instructions. |
Severity
| CVSS 3.1 | 8.8 highCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:HScored by NVD |
|---|---|
| Weakness | CWE-416 |
References
- CVE-2022-26485 on NVD
- CVE-2022-26485 in the CISA KEV catalog
- CVE-2022-26485 on OSV
- https://bugzilla.mozilla.org/show_bug.cgi?id=1758062 Exploit, 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-2022-26485 US Government Resource
Sources
Exploitation status from the CISA Known Exploited Vulnerabilities catalog. EPSS scores from FIRST. Descriptions, severity and references from the National Vulnerability Database. Open-source package versions from OSV (CC-BY 4.0). Text is shown as each source states it; Stackurity does not edit it. Check the vendor's advisory before acting.
This product uses data from the NVD API but is not endorsed or certified by the NVD.