CVE-2026-12314

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 v3 7.5 HIGH

7.5^/10

CVSS v3 : HIGH

Vector :

Exploitability : 3.9 / Impact : 3.6

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact NONE

Availability Impact NONE

Scope UNCHANGED

References

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

Configurations

Configuration 1 (hide)

OR	cpe:2.3:a:mozilla:firefox:::::esr:::*
	cpe:2.3:a:mozilla:firefox:::::-:::*
	cpe:2.3:a:mozilla:thunderbird:::::esr:::*
	cpe:2.3:a:mozilla:thunderbird:::::-:::*

History

No history.

Information

Published : 2026-06-16 13:16

Updated : 2026-06-18 19:16

NVD link : CVE-2026-12314

Mitre link : CVE-2026-12314

CVE.ORG link : CVE-2026-12314

JSON object : View

Products Affected

mozilla

thunderbird
firefox

CWE

CWE-119

Improper Restriction of Operations within the Bounds of a Memory Buffer

CWE-125

Out-of-bounds Read

CWE-416

Use After Free

CWE-787

Out-of-bounds Write

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