5.3

CVE-2025-4090: mozilla firefox

CVSS: 5.3v3.1MediumModified
AliasesCGA-29gm-4rg4-vvcvCGA-gf94-gqc7-cwrhCGA-h62x-9hg9-j4vw
Published 29-04-2025Last modified 13-04-2026
Open JSON

Vulnerability summary

CVE-2025-4090 is a medium (CVSS 5.3) vulnerability in mozilla firefox. EPSS estimates a 0.33% chance of exploitation in the next 30 days, higher than 24.2% of scored vulnerabilities.

Overall risk
21/100
0100
Low · default modelHow is this calculated?
CVSS score
5.3/10
010
Medium · v3.1 (CVE.org)
EPSS score
0.33%
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 2 · Related 4
OPENSUSE-SU-2025:15045-1OPENSUSE-SU-2026:11373-1CGA-MPM4-FVJ2-M79WUBUNTU-CVE-2025-4090

Timeline

  1. 29-04-2025
    PublishedVulnerability first disclosed.
  2. 13-04-2026
    Last modifiedVulnerability information updated.

Description

A vulnerability existed in Thunderbird for Android where potentially sensitive library locations were logged via Logcat. This vulnerability was fixed in Firefox 138 and Thunderbird 138.

CVSS metrics

2 scores · 2 sources · 1 version

EPSS trend

Probability

0.33%

Chance of exploitation in the next 30 days

Percentile

24%

Versus all other CVEs

30-day change

+0.01 pp

From 0.31% on 20-09-2026

20-09-202620-10-2026
EPSS score
0.33%

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

Chainguard2 products
  • firefox< 138-r0
  • firefox-esr< 138-r0
Mozilla2 products
Wolfi1 product
  • firefox< 138-r0

3 vendors · 5 products

References

3 links