CVE-2023-28176: mozilla firefox Out-of-bounds Write
CVSS: 8.8v3.1HighModified
AliasesUBUNTU-CVE-2023-28176DEBIAN-CVE-2023-28176
Published 02-06-2023Last modified 08-01-2025
Vulnerability summary
CVE-2023-28176 is a high (CVSS 8.8) Out-of-bounds Write vulnerability in mozilla firefox. EPSS estimates a 0.72% chance of exploitation in the next 30 days, higher than 53% of scored vulnerabilities.
CVSS score
8.8/10
010
High · v3.1 (CVE.org)EPSS score
0.72%
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 31 · Related 9DLA-3364-1DLA-3365-1DSA-5374-1DSA-5375-1MGASA-2023-0111MGASA-2023-0116OPENSUSE-SU-2024:12791-1OPENSUSE-SU-2024:12839-1OPENSUSE-SU-2024:14572-1RHSA-2023:1333RHSA-2023:1336RHSA-2023:1337RHSA-2023:1364RHSA-2023:1367RHSA-2023:1401RHSA-2023:1402RHSA-2023:1403RHSA-2023:1404RHSA-2023:1407RHSA-2023:1442RHSA-2023:1443RHSA-2023:1444RHSA-2023:1445RHSA-2023:1472RHSA-2023:1479SUSE-SU-2023:0728-1SUSE-SU-2023:0763-1SUSE-SU-2023:0835-1SUSE-SU-2023:1736-1USN-5954-1USN-5972-1
Timeline
- 02-06-2023PublishedVulnerability first disclosed.
- 08-01-2025Last modifiedVulnerability information updated.
Description
Memory safety bugs present in Firefox 110 and Firefox ESR 102.8. Some of these bugs showed evidence of memory corruption and we presume that with enough effort some of these could have been exploited to run arbitrary code. This vulnerability affects Firefox < 111, Firefox ESR < 102.9, and Thunderbird < 102.9.
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
0.72%
Chance of exploitation in the next 30 days
Percentile
53%
Versus all other CVEs
30-day change
0.00 pp
From 0.72% on 19-09-2026
19-09-202619-10-2026
EPSS score0.72%
Known exploited
Compare KEV catalogsNot in any of the 3 tracked catalogs.
Public exploits
0 foundNo public exploits indexed.
Weaknesses
CWE · root causeAffected systems
Ubuntu7 products
- firefox< 111.0+build2-0ubuntu0.18.04.1 | < 111.0+build2-0ubuntu0.20.04.1
- mozjs38All versions (No fix recorded)
- mozjs52All versions (No fix recorded)
- mozjs68All versions (No fix recorded)
- mozjs78All versions (No fix recorded)
Mozilla3 products
- firefox≥ unspecified, < 111 | < 111.0
- firefox_esr≥ unspecified, < 102.9 | < 102.9
- thunderbird≥ unspecified, < 102.9 | < 102.9
Debian2 products
- firefox-esr< 102.9.0esr-1
- thunderbird< 1:102.9.0-1
3 vendors · 12 products
References
11 links- www.mozilla.org/security/advisories/mfsa2023-09/Vendor Advisory
- www.mozilla.org/security/advisories/mfsa2023-10/Vendor Advisory
- www.mozilla.org/security/advisories/mfsa2023-11/Vendor Advisory
- bugzilla.mozilla.org/buglist.cgi?bug_id=1808352%2C1811637%2C1815904%2C1817442%2C1818674Not ApplicableVendor Advisory
