CVE-2026-0891 | Teknoloji dünyasından en güncel haberleri ve güvenlikle ilgili gelişmeleri takip edin.

Memory safety bugs present in Firefox ESR 140.6, Thunderbird ESR 140.6, Firefox 146 and Thunderbird 146. Some of these bugs showed evidence of memory corruption…
High CVSS: 8.1

CVE-2026-0891

Memory safety bugs present in Firefox ESR 140.6, Thunderbird ESR 140.6, Firefox 146 and Thunderbird 146. Some of these bugs showed evidence of memory corruption and we presume that with enough effort some of these could have been exploited to run arbitrary code. This vulnerability affects Firefox < 147, Firefox ESR < 140.7, Thunderbird < 147, and Thunderbird < 140.7.
Vendor
Mozilla
Product
Firefox
CWE
CWE-119
Yayın Tarihi
2026-01-13 14:16:39
Güncelleme
2026-01-22 19:13:32
Source Identifier
security@mozilla.org
KEV Date Added
-

Kategoriler

CWE-119 Firefox HIGH Mozilla 2026

Referanslar

https://bugzilla.mozilla.org/buglist.cgi?bug_id=1964722%2C2000981%2C2003100%2C2003278 https://www.mozilla.org/security/advisories/mfsa2026-01/ https://www.mozilla.org/security/advisories/mfsa2026-03/ https://www.mozilla.org/security/advisories/mfsa2026-04/ https://www.mozilla.org/security/advisories/mfsa2026-05/