CVE-2025-6432HIGH 8.6EPSS p26.4%

CVE-2025-6432CVE-2025-6432

mozilla / firefox

Description

When Multi-Account Containers was enabled, DNS requests could have bypassed a SOCKS proxy when the domain name was invalid or the SOCKS proxy was not responding. This vulnerability was fixed in Firefox 140 and Thunderbird 140.

Scoring

CVSS 3.18.6 (HIGH)
VectorCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:L/A:L
EPSS0.35% probability of exploitation · percentile 26.4% · 2026-10-05T12:00:23Z
Published2025-06-24
Last modified2026-09-30

Underlying weaknesses· 1

CWE-200

References

  1. https://bugzilla.mozilla.org/show_bug.cgi?id=1943804
  2. https://www.mozilla.org/security/advisories/mfsa2025-51/
  3. https://www.mozilla.org/security/advisories/mfsa2025-54/

1

TypeTargetConfidenceTier
WeaknessExposure of Sensitive Information to an Unauthorized Actorcwe-2000%live

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Sourced from NVD + FIRST.org EPSS. Curated for EU compliance use cases by Adam Lundqvist, Founder at SQUR.