CVE-2022-26385: mozilla firefox Use After Free
CVSS: 6.5v3.1MediumModified
AliasesUBUNTU-CVE-2022-26385
Published 22-12-2022Last modified 15-04-2025
Vulnerability summary
CVE-2022-26385 is a medium (CVSS 6.5) Use After Free vulnerability in mozilla firefox. EPSS estimates a 0.56% chance of exploitation in the next 30 days, higher than 45.7% of scored vulnerabilities. 1 public exploit is recorded.
CVSS score
6.5/10
010
Medium · v3.1 (CVE.org)EPSS score
0.56%
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 4 · Related 4Timeline
- 22-12-2022PublishedVulnerability first disclosed.
- 15-04-2025Last modifiedVulnerability information updated.
Description
In unusual circumstances, an individual thread may outlive the thread's manager during shutdown. This could have led to a use-after-free causing a potentially exploitable crash. This vulnerability affects Firefox < 98.
CVSS metrics
3 scores · 3 sources · 1 versionMedium 6.5Preferred score · CVE.org (CNA)
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:HSourcesAll 3 agree
- OSV · UbuntuEcosystem advisory · calculated6.5MediumCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
- NVDNIST6.5MediumCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
EPSS trend
Probability
0.56%
Chance of exploitation in the next 30 days
Percentile
46%
Versus all other CVEs
30-day change
+0.01 pp
From 0.55% on 19-09-2026
19-09-202619-10-2026
EPSS score0.56%
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
Mozilla1 product
- firefox≥ unspecified, < 98 | < 98.0
Ubuntu1 product
- firefox< 98.0+build3-0ubuntu0.18.04.2 | < 98.0+build3-0ubuntu0.20.04.2 | < 1:1snap1-0ubuntu1
2 vendors · 2 products
References
7 links- www.mozilla.org/security/advisories/mfsa2022-10/Vendor Advisory