CVE-2026-6749

HIGH EPSS 25.9%
Published Apr 21, 20262mo ago · Modified Jun 17, 20262w ago
7.5 CVSS 3.1
High
Find Similar
Published Apr 21, 2026 2mo ago
Last Modified Jun 17, 2026 2w ago

Description

Information disclosure due to uninitialized memory in the Graphics: Canvas2D component. This vulnerability was fixed in Firefox 150, Firefox ESR 115.35, Firefox ESR 140.10, Thunderbird 150, and Thunderbird 140.10.

CVSS Details

Base Score
7.5
Exploitability
3.9
Impact
3.6
Vector string
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
Attack Vector Network
Attack Complexity Low
Privileges Required None
User Interaction None
Scope Unchanged
Confidentiality High
Integrity None
Availability None

Threat Intelligence

EPSS Exploit Probability
25.9% percentile
Exploit & Patch Status
No Known Exploit
No Patch Available

Weaknesses 1

CWE-908

Affected Products 4

VendorProductVersionRange
mozillafirefox* <115.35.0
mozillafirefox* <150.0
mozillafirefox*≥140.0  –  <140.10.0
mozillathunderbird* <140.10.0

References 6

  • bugzilla.mozilla.org https://bugzilla.mozilla.org/show_bug.cgi?id=2022610
    Permissions Required
  • mozilla.org https://www.mozilla.org/security/advisories/mfsa2026-30/
    Vendor Advisory
  • mozilla.org https://www.mozilla.org/security/advisories/mfsa2026-31/
    Vendor Advisory
  • mozilla.org https://www.mozilla.org/security/advisories/mfsa2026-32/
    Vendor Advisory
  • mozilla.org https://www.mozilla.org/security/advisories/mfsa2026-33/
    Vendor Advisory
  • mozilla.org https://www.mozilla.org/security/advisories/mfsa2026-34/
    Vendor Advisory

Remediation

No remediation data recorded yet

Check vendor advisories and the NVD entry for patch availability.