CVE-2026-74947CWE-763

CVE-2026-74947

High · published August 18, 2026

CVSS v3.1
8.8
EPSS
0%
Percentile
38.0
In the wild
Unconfirmed
What it is

Privilege escalation due to invalid pointer in the Graphics component. This vulnerability was fixed in Firefox 154, Firefox ESR 153.1, Thunderbird 154, and Thunderbird 153.1.

The record
Technical detail
CVSS v3.1
8.8 · HIGH
Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
CVSS v4.0
Not supplied
EPSS
0.00449 · 38.0th percentile
Weakness
CWE-763 · Release of Invalid Pointer or Reference
Published
2026-08-18T17:17Z
Affected products (4)
ProductVersionsFixed in
mozilla/firefox< 153.1.0153.1.0
mozilla/firefox< 154.0.0154.0.0
mozilla/thunderbird< 153.1.0153.1.0
mozilla/thunderbird< 154.0154.0
References (5)
https://bugzilla.mozilla.org/show_bug.cgi?id=2060010 · [email protected]https://www.mozilla.org/security/advisories/mfsa2026-74/ · [email protected]https://www.mozilla.org/security/advisories/mfsa2026-77/ · [email protected]https://www.mozilla.org/security/advisories/mfsa2026-78/ · [email protected]https://www.mozilla.org/security/advisories/mfsa2026-80/ · [email protected]
EPSS history
Timeline
  • 18 AUG 12:23Z
    Privilege escalation due to invalid pointer in the Graphics component
    cvelistv5