CVE-2025-49710CRITICAL 9.8EPSS p46.3%

CVE-2025-49710CVE-2025-49710

Description

An integer overflow was present in `OrderedHashTable` used by the JavaScript engine. This vulnerability was fixed in Firefox 139.0.4.

Scoring

CVSS 3.19.8 (CRITICAL)
VectorCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
EPSS0.65% probability of exploitation · percentile 46.3% · 2026-06-18T12:00:27Z
Published2025-06-11
Last modified2026-04-13

Underlying weaknesses· 1

CWE-190

References

  1. https://bugzilla.mozilla.org/show_bug.cgi?id=1970095
  2. https://www.mozilla.org/security/advisories/mfsa2025-47/

1

TypeTargetConfidenceTier
WeaknessInteger Overflow or Wraparoundcwe-1900%live

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