7.5

CVE-2025-13012: mozilla firefox Race Condition

CVSS: 7.5v3.1HighModified
AliasesUBUNTU-CVE-2025-13012DEBIAN-CVE-2025-13012CGA-5j25-cc86-qqh3
Published 11-11-2025Last modified 13-04-2026
Open JSON

Vulnerability summary

CVE-2025-13012 is a high (CVSS 7.5) Race Condition vulnerability in mozilla firefox. EPSS estimates a 0.24% chance of exploitation in the next 30 days, higher than 14.5% of scored vulnerabilities.

Overall risk
30/100
0100
Medium · default modelHow is this calculated?
CVSS score
7.5/10
010
High · v3.1 (CVE.org)
EPSS score
0.24%
0%100%
Low · +0.01 pp in 30 days
KEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded

Advisory lineage

Upstream 0 · Downstream 40 · Related 11
DLA-4370-1DLA-4372-1DSA-6054-1DSA-6059-1MGASA-2025-0300MGASA-2025-0305

Timeline

  1. 11-11-2025
    PublishedVulnerability first disclosed.
  2. 13-04-2026
    Last modifiedVulnerability information updated.

Description

Race condition in the Graphics component. This vulnerability was fixed in Firefox 145, Firefox ESR 140.5, Firefox ESR 115.30, Thunderbird 145, and Thunderbird 140.5.

CVSS metrics

6 scores · 6 sources · 1 version

EPSS trend

Probability

0.24%

Chance of exploitation in the next 30 days

Percentile

15%

Versus all other CVEs

30-day change

+0.01 pp

From 0.23% on 19-09-2026

19-09-202619-10-2026
EPSS score
0.24%

Known exploited

Compare KEV catalogs

Not in any of the 3 tracked catalogs.

Public exploits

0 found

No public exploits indexed.

Weaknesses

CWE · root cause

Affected 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

References

12 links
Show all 12 references