CVE-2023-29535: mozilla firefox
Vulnerability summary
CVE-2023-29535 is a medium (CVSS 6.5) vulnerability in mozilla firefox. EPSS estimates a 0.75% chance of exploitation in the next 30 days, higher than 53.9% of scored vulnerabilities.
Advisory lineage
Upstream 0 · Downstream 32 · Related 10Timeline
- 02-06-2023PublishedVulnerability first disclosed.
- 09-01-2025Last modifiedVulnerability information updated.
Description
Following a Garbage Collector compaction, weak maps may have been accessed before they were correctly traced. This resulted in memory corruption and a potentially exploitable crash. This vulnerability affects Firefox < 112, Focus for Android < 112, Firefox ESR < 102.10, Firefox for Android < 112, and Thunderbird < 102.10.
CVSS metrics
3 scores · 3 sources · 1 version- OSV · UbuntuEcosystem advisory · calculated6.5MediumCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
- OSV · DebianEcosystem advisory · calculated6.5MediumCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
EPSS trend
Probability
0.75%
Chance of exploitation in the next 30 days
Percentile
54%
Versus all other CVEs
30-day change
0.00 pp
From 0.75% on 18-09-2026
Known exploited
Compare KEV catalogsNot in any of the 3 tracked catalogs.
Public exploits
0 foundNo public exploits indexed.
Weaknesses
CWE · root causeNo weakness data has been published for this record.
Affected systems
Ubuntu8 products
- firefox< 112.0+build2-0ubuntu0.18.04.1 | < 112.0+build2-0ubuntu0.20.04.1
- mozjs102< 102.11.0-0ubuntu0.22.04.1
- mozjs38All versions (No fix recorded)
- mozjs52All versions (No fix recorded)
- mozjs68All versions (No fix recorded)
Mozilla7 products
- firefox≥ unspecified, < 112 | < 112.0
- firefox_esr≥ unspecified, < 102.10 | < 102.10
- firefox for android≥ unspecified, < 112
- firefox_mobile< 112.0
- focus< 112.0
Debian2 products
- firefox-esr< 102.10.0esr-1
- thunderbird< 1:102.10.0-1
3 vendors · 17 products
References
13 links- www.mozilla.org/security/advisories/mfsa2023-15/Vendor Advisory
- www.mozilla.org/security/advisories/mfsa2023-14/Vendor Advisory
- www.mozilla.org/security/advisories/mfsa2023-13/Vendor Advisory
- bugzilla.mozilla.org/show_bug.cgi?id=1820543Issue Tracking
