CVE-2022-26381: mozilla firefox Use After Free
CVSS: 8.8v3.1HighModified
AliasesUBUNTU-CVE-2022-26381DEBIAN-CVE-2022-26381
Published 22-12-2022Last modified 16-04-2025
Vulnerability summary
CVE-2022-26381 is a high (CVSS 8.8) Use After Free vulnerability in mozilla firefox. EPSS estimates a 0.84% chance of exploitation in the next 30 days, higher than 57.2% of scored vulnerabilities. 1 public exploit is recorded.
CVSS score
8.8/10
010
High · v3.1 (CVE.org)EPSS score
0.84%
0%100%
Low · -0.01 pp in 30 daysKEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits1reference
Advisory lineage
Upstream 0 · Downstream 29 · Related 13DLA-2942-1DLA-2961-1DSA-5097-1DSA-5106-1MGASA-2022-0093MGASA-2022-0097OPENSUSE-SU-2022:0821-1OPENSUSE-SU-2022:0906-1OPENSUSE-SU-2024:11908-1OPENSUSE-SU-2024:11909-1OPENSUSE-SU-2024:14572-1RHSA-2022:0815RHSA-2022:0816RHSA-2022:0817RHSA-2022:0818RHSA-2022:0824RHSA-2022:0843RHSA-2022:0845RHSA-2022:0847RHSA-2022:0850RHSA-2022:0853SUSE-SU-2022:0819-1SUSE-SU-2022:0821-1SUSE-SU-2022:0822-1SUSE-SU-2022:0906-1SUSE-SU-2022:14906-1USN-5321-1USN-5321-2USN-5345-1
Timeline
- 22-12-2022PublishedVulnerability first disclosed.
- 16-04-2025Last modifiedVulnerability information updated.
Description
An attacker could have caused a use-after-free by forcing a text reflow in an SVG object leading to a potentially exploitable crash. This vulnerability affects Firefox < 98, Firefox ESR < 91.7, and Thunderbird < 91.7.
CVSS metrics
4 scores · 4 sources · 1 versionHigh 8.8Preferred score · CVE.org (CNA)
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:HSourcesAll 4 agree
- OSV · UbuntuEcosystem advisory · calculated8.8HighCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
- OSV · DebianEcosystem advisory · calculated8.8HighCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
- NVDNIST8.8HighCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
EPSS trend
Probability
0.84%
Chance of exploitation in the next 30 days
Percentile
57%
Versus all other CVEs
30-day change
-0.01 pp
From 0.85% on 19-09-2026
19-09-202619-10-2026
EPSS score0.84%
Known exploited
Compare KEV catalogsNot in any of the 3 tracked catalogs.
Public exploits
1 foundExploit Reference (bugzilla.mozilla.org)
Maturity: unknown
Weaknesses
CWE · root causeAffected systems
Ubuntu6 products
- firefox< 98.0+build3-0ubuntu0.18.04.2 | < 98.0+build3-0ubuntu0.20.04.2 | < 1:1snap1-0ubuntu1
- mozjs38All versions (No fix recorded)
- mozjs52All versions (No fix recorded)
- mozjs68All versions (No fix recorded)
- mozjs78All versions (No fix recorded)
Mozilla3 products
- firefox≥ unspecified, < 98 | < 98.0
- firefox_esr≥ unspecified, < 91.7 | < 91.7
- thunderbird≥ unspecified, < 91.7 | < 91.7
Debian2 products
- firefox-esr< 91.7.0esr-1
- thunderbird< 1:91.7.0-1
3 vendors · 11 products
References
12 links- www.mozilla.org/security/advisories/mfsa2022-12/Vendor Advisory
- www.mozilla.org/security/advisories/mfsa2022-10/Vendor Advisory
- www.mozilla.org/security/advisories/mfsa2022-11/Vendor Advisory
