CVE-2023-25746: mozilla firefox_esr Out-of-bounds Write
CVSS: 8.8v3.1HighModified
AliasesUBUNTU-CVE-2023-25746DEBIAN-CVE-2023-25746
Published 02-06-2023Last modified 09-01-2025
Vulnerability summary
CVE-2023-25746 is a high (CVSS 8.8) Out-of-bounds Write vulnerability in mozilla firefox_esr. EPSS estimates a 0.67% chance of exploitation in the next 30 days, higher than 50.9% of scored vulnerabilities.
CVSS score
8.8/10
010
High · v3.1 (CVE.org)EPSS score
0.67%
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 28 · Related 6DLA-3319-1DLA-3324-1DSA-5350-1DSA-5355-1MGASA-2023-0056MGASA-2023-0057OPENSUSE-SU-2024:12713-1RHSA-2023:0805RHSA-2023:0806RHSA-2023:0807RHSA-2023:0808RHSA-2023:0809RHSA-2023:0810RHSA-2023:0811RHSA-2023:0812RHSA-2023:0817RHSA-2023:0818RHSA-2023:0819RHSA-2023:0820RHSA-2023:0821RHSA-2023:0822RHSA-2023:0823RHSA-2023:0824SUSE-SU-2023:0461-1SUSE-SU-2023:0466-1SUSE-SU-2023:0469-1SUSE-SU-2023:0599-1USN-5943-1
Timeline
- 02-06-2023PublishedVulnerability first disclosed.
- 09-01-2025Last modifiedVulnerability information updated.
Description
Memory safety bugs present in Firefox ESR 102.7. 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 Thunderbird < 102.8 and Firefox ESR < 102.8.
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
0.67%
Chance of exploitation in the next 30 days
Percentile
51%
Versus all other CVEs
30-day change
0.00 pp
From 0.67% on 18-09-2026
18-09-202618-10-2026
EPSS score0.67%
Known exploited
Compare KEV catalogsNot in any of the 3 tracked catalogs.
Public exploits
0 foundNo public exploits indexed.
Weaknesses
CWE · root causeAffected systems
Debian2 products
- firefox-esr< 102.8.0esr-1
- thunderbird< 1:102.8.0-1
Mozilla2 products
- firefox_esr≥ unspecified, < 102.8 | < 102.8
- thunderbird≥ unspecified, < 102.8 | < 102.8
Ubuntu1 product
- thunderbird< 1:102.8.0+build2-0ubuntu0.18.04.1 | < 1:102.8.0+build2-0ubuntu0.20.04.1 | < 1:102.8.0+build2-0ubuntu0.22.04.1
3 vendors · 5 products
References
8 links- www.mozilla.org/security/advisories/mfsa2023-06/Vendor Advisory
- www.mozilla.org/security/advisories/mfsa2023-07/Vendor Advisory
