CVE-2025-13015: mozilla firefox Authentication Bypass by Spoofing
CVSS: 3.4v3.1LowModified
AliasesUBUNTU-CVE-2025-13015DEBIAN-CVE-2025-13015CGA-7pqj-qv7c-gm83CGA-c4c4-gm2q-phv8CGA-mhrg-527p-xghcCGA-xg78-5x27-66wv
Published 11-11-2025Last modified 13-04-2026
Vulnerability summary
CVE-2025-13015 is a low (CVSS 3.4) Authentication Bypass by Spoofing vulnerability in mozilla firefox. EPSS estimates a 0.23% chance of exploitation in the next 30 days, higher than 12.8% of scored vulnerabilities.
CVSS score
3.4/10
010
Low · v3.1 (CVE.org)EPSS score
0.23%
0%100%
Low · -0.03 pp in 30 daysKEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded
Advisory lineage
Upstream 0 · Downstream 40 · Related 11DLA-4370-1DLA-4372-1DSA-6054-1DSA-6059-1MGASA-2025-0300MGASA-2025-0305OPENSUSE-SU-2025:15735-1OPENSUSE-SU-2025:15738-1OPENSUSE-SU-2025:20065-1OPENSUSE-SU-2026:11373-1OPENSUSE-SU-2026:20002-1RHSA-2025:21120RHSA-2025:21121RHSA-2025:21280RHSA-2025:21281RHSA-2025:21841RHSA-2025:21842RHSA-2025:21843RHSA-2025:21844RHSA-2025:21881RHSA-2025:22363RHSA-2025:22367RHSA-2025:22368RHSA-2025:22369RHSA-2025:22371RHSA-2025:22372RHSA-2025:22373RHSA-2025:22374RHSA-2025:22375RHSA-2025:22449RHSA-2025:22450RHSA-2025:22451RHSA-2025:22791RHSA-2025:22792RHSA-2025:22882RHSA-2025:22883SUSE-SU-2025:21021-1SUSE-SU-2025:4173-1SUSE-SU-2025:4174-1SUSE-SU-2025:4195-1CGA-964Q-9Q9F-RPX5USN-7991-1
Timeline
- 11-11-2025PublishedVulnerability first disclosed.
- 13-04-2026Last modifiedVulnerability information updated.
Description
Spoofing issue in Firefox. This vulnerability was fixed in Firefox 145, Firefox ESR 140.5, and Firefox ESR 115.30.
CVSS metrics
6 scores · 6 sources · 1 versionLow 3.4Preferred score · CVE.org (CNA)
CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:C/C:L/I:N/A:NSourcesAll 6 agree
- OSV · UbuntuEcosystem advisory · calculated3.4LowCVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:C/C:L/I:N/A:N
- OSV · DebianEcosystem advisory · calculated3.4LowCVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:C/C:L/I:N/A:N
- OSV · WolfiEcosystem advisory · calculated3.4LowCVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:C/C:L/I:N/A:N
- OSV · ChainguardEcosystem advisory · calculated3.4LowCVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:C/C:L/I:N/A:N
- NVDNIST3.4LowCVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:C/C:L/I:N/A:N
EPSS trend
Probability
0.23%
Chance of exploitation in the next 30 days
Percentile
13%
Versus all other CVEs
30-day change
-0.03 pp
From 0.26% on 19-09-2026
19-09-202619-10-2026
EPSS score0.23%
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< 140.5-r0
- firefox-esr< 140.5-r0
Debian2 products
- firefox-esr< 140.5.0esr-1~deb12u1 | < 140.5.0esr-1~deb13u1 | < 140.5.0esr-1
- thunderbird< 1:140.5.0esr-1~deb12u1 | < 1:140.5.0esr-1~deb13u1 | < 1:140.5.0esr-1
Mozilla1 product
- firefox< 115.30.0 | < 145.0 | ≥ 140.0, < 140.5.0
Wolfi1 product
- firefox< 140.5-r0
5 vendors · 14 products
