VDB

CVE-2026-74977

CVE-2026-74977 PUBLISHED CVSS 7.5 HIGH

Reported by mozilla · Published August 18, 2026

Integer overflow in the Graphics component. This vulnerability was fixed in Firefox 154, Firefox ESR 153.1, Thunderbird 154, and Thunderbird 153.1.

Risk Scores

CVSS 3.1
7.5
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Affected Products

VendorProductVersions
MozillaFirefox153.1, 154
MozillaThunderbird153.1, 154
MozillaThunderbird153.1, 154
MozillaFirefox153.1, 154

Timeline

  • Aug 18, 2026 Coalition ESS Score
  • Aug 18, 2026 CVE Published
  • Aug 18, 2026 CVE Updated
  • Aug 24, 2026 EPSS Score
  • Aug 26, 2026 EPSS Score
  • Aug 30, 2026 EPSS Score
  • Sep 3, 2026 EPSS Score
  • Sep 5, 2026 Security Advisory
  • Sep 8, 2026 EPSS Score
  • Sep 9, 2026 EPSS Score
  • Sep 12, 2026 EPSS Score
  • Sep 16, 2026 EPSS Score

References

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