CVE-2022-34470: mozilla firefox Use After Free
CVSS: 9.8v3.1CriticalModified
AliasesUBUNTU-CVE-2022-34470DEBIAN-CVE-2022-34470
Published 22-12-2022Last modified 15-04-2025
Vulnerability summary
CVE-2022-34470 is a critical (CVSS 9.8) Use After Free vulnerability in mozilla firefox. EPSS estimates a 1.06% chance of exploitation in the next 30 days, higher than 64.1% of scored vulnerabilities.
CVSS score
9.8/10
010
Critical · v3.1 (CVE.org)EPSS score
1.06%
0%100%
Low · 0.00 pp in 30 daysKEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded
Advisory lineage
Upstream 0 · Downstream 30 · Related 13DLA-3064-1DSA-5172-1DSA-5175-1MGASA-2022-0251MGASA-2022-0253OPENSUSE-SU-2024:12161-1OPENSUSE-SU-2024:12184-1OPENSUSE-SU-2024:14572-1RHSA-2022:5469RHSA-2022:5470RHSA-2022:5472RHSA-2022:5473RHSA-2022:5474RHSA-2022:5475RHSA-2022:5477RHSA-2022:5478RHSA-2022:5479RHSA-2022:5480RHSA-2022:5481RHSA-2022:5482SUSE-SU-2022:2279-1SUSE-SU-2022:2289-1SUSE-SU-2022:2313-1SUSE-SU-2022:2320-1SUSE-SU-2022:3272-1SUSE-SU-2022:3273-1SUSE-SU-2022:3281-1SUSE-SU-2022:3396-1USN-5504-1USN-5512-1
Timeline
- 22-12-2022PublishedVulnerability first disclosed.
- 15-04-2025Last modifiedVulnerability information updated.
Description
Session history navigations may have led to a use-after-free and potentially exploitable crash. This vulnerability affects Firefox < 102, Firefox ESR < 91.11, Thunderbird < 102, and Thunderbird < 91.11.
CVSS metrics
4 scores · 4 sources · 1 versionCritical 9.8Preferred score · CVE.org (CNA)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:HSourcesAll 4 agree
- OSV · UbuntuEcosystem advisory · calculated9.8CriticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
- OSV · DebianEcosystem advisory · calculated9.8CriticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
- NVDNIST9.8CriticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
EPSS trend
Probability
1.06%
Chance of exploitation in the next 30 days
Percentile
64%
Versus all other CVEs
30-day change
0.00 pp
From 1.06% on 19-09-2026
19-09-202619-10-2026
EPSS score1.06%
Known exploited
Compare KEV catalogsNot in any of the 3 tracked catalogs.
Public exploits
0 foundNo public exploits indexed.
Weaknesses
CWE · root causeAffected systems
Mozilla3 products
- firefox≥ unspecified, < 102 | < 102.0
- firefox_esr≥ unspecified, < 91.11 | < 91.11
- thunderbird≥ unspecified, < 102 | ≥ unspecified, < 91.11 | < 91.11
Debian2 products
- firefox-esr< 91.11.0esr-1
- thunderbird< 1:91.11.0-1
Ubuntu2 products
- firefox< 102.0+build2-0ubuntu0.18.04.1 | < 102.0+build2-0ubuntu0.20.04.1
- thunderbird< 1:91.11.0+build2-0ubuntu0.18.04.1 | < 1:91.11.0+build2-0ubuntu0.20.04.1 | < 1:91.11.0+build2-0ubuntu0.22.04.1
3 vendors · 7 products
References
10 links- www.mozilla.org/security/advisories/mfsa2022-24/Vendor Advisory
- www.mozilla.org/security/advisories/mfsa2022-26/Vendor Advisory
- www.mozilla.org/security/advisories/mfsa2022-25/Vendor Advisory
