CVE-2026-12314

HighCVSS 7.5/10Last modified Oct 21, 2026

Description

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

Metrics

CVSS 3.1 7.5/10CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

Weakness enumeration

CWE-119CWE-125CWE-416CWE-787

Affected software

No affected versions have been published.

Timeline

Published
Jun 16, 2026
Last modified
Oct 21, 2026
NVD status
Modified

Related CVEs from 2026

CVE-2026-123159.1Mitigation bypass in the DOM: Security component. This vulnerability was fixed in Firefox 152, Firefox ESR 140.12, Thunderbird 152, and ThunCVE-2026-123169.1Mitigation bypass in the DOM: Security component. This vulnerability was fixed in Firefox 152 and Thunderbird 152.CVE-2026-123177.5Memory safety bug fixed in Thunderbird 152. This vulnerability was fixed in Firefox 152 and Thunderbird 152.CVE-2026-123187.3Incorrect boundary conditions in the Libraries component in NSS. This vulnerability was fixed in Firefox 152 and Thunderbird 152.CVE-2026-123196.5Denial-of-service in the Audio/Video: Playback component. This vulnerability was fixed in Firefox 152 and Thunderbird 152.CVE-2026-12326.8A medium-severity vulnerability has been identified in BeyondTrust Privilege Management for Windows versions <=25.7. Under certain conditionCVE-2026-123204.3Information disclosure in the Password Manager component. This vulnerability was fixed in Firefox 152 and Thunderbird 152.CVE-2026-123215.4JIT miscompilation in the JavaScript: WebAssembly component. This vulnerability was fixed in Firefox 152 and Thunderbird 152.CVE-2026-123225.4Clickjacking issue in the Widget: Gtk component. This vulnerability was fixed in Firefox 152 and Thunderbird 152.CVE-2026-123235.4Spoofing issue in the DOM: Core & HTML component. This vulnerability was fixed in Firefox 152 and Thunderbird 152.CVE-2026-123247.3Incorrect boundary conditions in the Graphics: CanvasWebGL component. This vulnerability was fixed in Firefox 152, Firefox ESR 140.12, ThundCVE-2026-123256.5Denial-of-service in the Graphics: ImageLib component. This vulnerability was fixed in Firefox 152, Firefox ESR 140.12, Firefox ESR 115.37,
CVE-2026-12314: High severity, CVSS 7.5 | Vulnix