CVE-2026-12314

HIGH EPSS 16.4%
Published Jun 16, 20261w ago · Modified Jun 18, 20261w ago
7.5 CVSS 3.1
High
Find Similar
Published Jun 16, 2026 1w ago
Last Modified Jun 18, 2026 1w ago

Description

Memory safety bug fixed in Firefox 152. This vulnerability was fixed in Firefox 152, Firefox ESR 140.12, Thunderbird 152, and Thunderbird 140.12.

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
16.4% percentile
Exploit & Patch Status
No Known Exploit
No Patch Available

Weaknesses 4

CWE-119 Improper Restriction of Operations within the Bounds of a Memory Buffer Memory Safety
CWE-125 Out-of-bounds Read Memory Safety
CWE-416 Use After Free Memory Safety
CWE-787 Out-of-bounds Write Memory Safety

Affected Products 4

VendorProductVersionRange
mozillafirefox* <140.12.0
mozillafirefox* <152.0.0
mozillathunderbird* <140.12.0
mozillathunderbird* <152.0.0

References 5

  • bugzilla.mozilla.org https://bugzilla.mozilla.org/show_bug.cgi?id=2041856
    Permissions Required
  • mozilla.org https://www.mozilla.org/security/advisories/mfsa2026-57/
    Vendor Advisory
  • mozilla.org https://www.mozilla.org/security/advisories/mfsa2026-58/
    Vendor Advisory
  • mozilla.org https://www.mozilla.org/security/advisories/mfsa2026-60/
    Vendor Advisory
  • mozilla.org https://www.mozilla.org/security/advisories/mfsa2026-61/
    Vendor Advisory

Remediation

No remediation data recorded yet

Check vendor advisories and the NVD entry for patch availability.