CVE-2026-12316

CRITICAL EPSS 15.6%
Published Jun 16, 20261w ago · Modified Jun 17, 20261w ago
9.1 CVSS 3.1
Critical
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Published Jun 16, 2026 1w ago
Last Modified Jun 17, 2026 1w ago

Description

Mitigation bypass in the DOM: Security component. This vulnerability was fixed in Firefox 152 and Thunderbird 152.

CVSS Details

Base Score
9.1
Exploitability
3.9
Impact
5.2
Vector string
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N
Attack Vector Network
Attack Complexity Low
Privileges Required None
User Interaction None
Scope Unchanged
Confidentiality High
Integrity High
Availability None

Threat Intelligence

EPSS Exploit Probability
15.6% percentile
Exploit & Patch Status
No Known Exploit
No Patch Available

Weaknesses 1

CWE-693

Affected Products 2

VendorProductVersionRange
mozillafirefox* <152.0.0
mozillathunderbird* <152.0.0

References 3

  • bugzilla.mozilla.org https://bugzilla.mozilla.org/show_bug.cgi?id=2045496
    Permissions Required
  • mozilla.org https://www.mozilla.org/security/advisories/mfsa2026-57/
    Vendor Advisory
  • mozilla.org https://www.mozilla.org/security/advisories/mfsa2026-60/
    Vendor Advisory

Remediation

No remediation data recorded yet

Check vendor advisories and the NVD entry for patch availability.