CVE-2026-5732HIGH 8.8EPSS p27.7%

CVE-2026-5732CVE-2026-5732

mozilla / firefox

Description

Incorrect boundary conditions, integer overflow in the Graphics: Text component. This vulnerability was fixed in Firefox 149.0.2, Firefox ESR 140.9.1, Thunderbird 149.0.2, and Thunderbird 140.9.1.

Scoring

CVSS 3.18.8 (HIGH)
VectorCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
EPSS0.35% probability of exploitation · percentile 27.7% · 2026-08-03T12:00:16Z
Published2026-04-07
Last modified2026-07-15

Underlying weaknesses· 1

CWE-190

References

  1. https://bugzilla.mozilla.org/show_bug.cgi?id=2017867
  2. https://www.mozilla.org/security/advisories/mfsa2026-25/
  3. https://www.mozilla.org/security/advisories/mfsa2026-27/
  4. https://www.mozilla.org/security/advisories/mfsa2026-28/
  5. https://www.mozilla.org/security/advisories/mfsa2026-29/

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.