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CVE-2026-8959

Опубликовано: 19 мая 2026
Источник: redhat
CVSS3: 6.1
EPSS Низкий

Описание

Sandbox escape due to incorrect boundary conditions in the Widget: Win32 component. This vulnerability was fixed in Firefox 151, Firefox ESR 140.11, Thunderbird 151, and Thunderbird 140.11.

A flaw was found in Firefox and Thunderbird. The Mozilla Foundation's Security Advisory describes the following issue: Sandbox escape due to incorrect boundary conditions in the Widget: Win32 component

Отчет

Red Hat Product Security rates the severity of this flaw as determined by the Mozilla Foundation Security Advisory.

Затронутые пакеты

ПлатформаПакетСостояниеРекомендацияРелиз
Red Hat Enterprise Linux 10firefoxNot affected
Red Hat Enterprise Linux 10rhel10/firefox-flatpakNot affected
Red Hat Enterprise Linux 10rhel10/thunderbird-flatpakAffected
Red Hat Enterprise Linux 6firefoxNot affected
Red Hat Enterprise Linux 6thunderbirdOut of support scope
Red Hat Enterprise Linux 7firefoxNot affected
Red Hat Enterprise Linux 7thunderbirdOut of support scope
Red Hat Enterprise Linux 8firefoxNot affected
Red Hat Enterprise Linux 9firefoxNot affected
Red Hat Enterprise Linux 10thunderbirdFixedRHSA-2026:2232501.06.2026

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Дополнительная информация

Статус:

Moderate
Дефект:
CWE-653
https://bugzilla.redhat.com/show_bug.cgi?id=2479861firefox: thunderbird: Sandbox escape due to incorrect boundary conditions in the Widget: Win32 component

EPSS

Процентиль: 33%
0.00417
Низкий

6.1 Medium

CVSS3

Связанные уязвимости

CVSS3: 9.6
ubuntu
2 месяца назад

Sandbox escape due to incorrect boundary conditions in the Widget: Win32 component. This vulnerability was fixed in Firefox 151, Firefox ESR 140.11, Thunderbird 151, and Thunderbird 140.11.

CVSS3: 9.6
nvd
2 месяца назад

Sandbox escape due to incorrect boundary conditions in the Widget: Win32 component. This vulnerability was fixed in Firefox 151, Firefox ESR 140.11, Thunderbird 151, and Thunderbird 140.11.

CVSS3: 9.6
debian
2 месяца назад

Sandbox escape due to incorrect boundary conditions in the Widget: Win ...

CVSS3: 9.6
github
2 месяца назад

Sandbox escape due to incorrect boundary conditions in the Widget: Win32 component. This vulnerability was fixed in Firefox 151 and Firefox ESR 140.11.

rocky
около 2 месяцев назад

Important: thunderbird security update

EPSS

Процентиль: 33%
0.00417
Низкий

6.1 Medium

CVSS3