CVE-2025-11709: mozilla firefox Out-of-bounds Write
CVSS: 9.8v3.1CriticalModified
AliasesUBUNTU-CVE-2025-11709DEBIAN-CVE-2025-11709CGA-7g39-66q4-8rvpCGA-ggc2-hjpj-ff6pCGA-9qgj-4c5w-8xc7CGA-wx36-4p5g-j6wq
Published 14-10-2025Last modified 13-04-2026
Vulnerability summary
CVE-2025-11709 is a critical (CVSS 9.8) Out-of-bounds Write vulnerability in mozilla firefox. EPSS estimates a 0.42% chance of exploitation in the next 30 days, higher than 35.1% of scored vulnerabilities.
CVSS score
9.8/10
010
Critical · v3.1 (CVE.org)EPSS score
0.42%
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 38 · Related 13DLA-4335-1DLA-4351-1DSA-6025-1DSA-6040-1MGASA-2025-0246MGASA-2025-0247OPENSUSE-SU-2025:15632-1OPENSUSE-SU-2025:15645-1OPENSUSE-SU-2025:15646-1OPENSUSE-SU-2025:20026-1OPENSUSE-SU-2025:20065-1RHSA-2025:18154RHSA-2025:18155RHSA-2025:18285RHSA-2025:18320RHSA-2025:18321RHSA-2025:18983RHSA-2025:19278RHSA-2025:19938RHSA-2025:19939RHSA-2025:19941RHSA-2025:19942RHSA-2025:19943RHSA-2025:19944RHSA-2025:19945RHSA-2025:21054RHSA-2025:21055RHSA-2025:21056RHSA-2025:21057RHSA-2025:21058RHSA-2025:21059RHSA-2025:21064SUSE-SU-2025:21021-1SUSE-SU-2025:3775-1SUSE-SU-2025:3808-1SUSE-SU-2025:4006-1SUSE-SU-2025:4173-1SUSE-SU-2025:4174-1CGA-4J34-PJQH-3FF5USN-7991-1
Timeline
- 14-10-2025PublishedVulnerability first disclosed.
- 13-04-2026Last modifiedVulnerability information updated.
Description
A compromised web process was able to trigger out of bounds reads and writes in a more privileged process using manipulated WebGL textures. This vulnerability was fixed in Firefox 144, Firefox ESR 115.29, Firefox ESR 140.4, Thunderbird 144, and Thunderbird 140.4.
CVSS metrics
6 scores · 6 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 6 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
- OSV · WolfiEcosystem advisory · calculated9.8CriticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
- OSV · ChainguardEcosystem 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
0.42%
Chance of exploitation in the next 30 days
Percentile
35%
Versus all other CVEs
30-day change
0.00 pp
From 0.42% on 19-09-2026
19-09-202619-10-2026
EPSS score0.42%
Known exploited
Compare KEV catalogsNot in any of the 3 tracked catalogs.
Public exploits
0 foundNo public exploits indexed.
Weaknesses
CWE · root causeAffected systems
Ubuntu8 products
- mozjs102All versions (No fix recorded)
- mozjs115All versions (No fix recorded)
- mozjs38All versions (No fix recorded)
- mozjs52All versions (No fix recorded)
- mozjs68All versions (No fix recorded)
Chainguard2 products
- firefox< 140.4-r0
- firefox-esr< 140.4-r0
Debian2 products
- firefox-esr< 140.4.0esr-1~deb12u1 | < 140.4.0esr-1~deb13u1 | < 140.4.0esr-1
- thunderbird< 1:140.4.0esr-1~deb12u1 | < 1:140.4.0esr-1~deb13u1 | < 1:140.4.0esr-1
Mozilla2 products
- firefox< 115.29.0 | < 144.0 | ≥ 116.0, < 140.4.0
- thunderbird< 144.0
Wolfi1 product
- firefox< 140.4-r0
5 vendors · 15 products
