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CVE-2026-84637

Опубликовано: 01 сент. 2026
Источник: redhat
CVSS3: 8.8
EPSS Низкий

Описание

Malicious calendar invitations could use file URI attachments to launch local or network-hosted executables on Windows, bypassing Thunderbird's normal executable attachment protections. With the new invitation display enabled, the attachment could also appear under a misleading filename. This vulnerability was fixed in Thunderbird 154 and Thunderbird 153.2.

A flaw was found in Thunderbird. Malicious calendar invitations could use file URI attachments to launch local or network-hosted executables on Windows systems. This bypasses Thunderbird's built-in protections for executable attachments, potentially leading to arbitrary code execution. Additionally, the attachment could be disguised with a misleading filename, increasing the risk of exploitation.

Затронутые пакеты

ПлатформаПакетСостояниеРекомендацияРелиз
Red Hat Enterprise Linux 10thunderbirdAffected
Red Hat Enterprise Linux 8thunderbirdAffected
Red Hat Enterprise Linux 9thunderbirdAffected

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Дополнительная информация

Статус:

Important
Дефект:
CWE-59
https://bugzilla.redhat.com/show_bug.cgi?id=2527103thunderbird: Thunderbird: Arbitrary code execution via malicious calendar invitation attachments

EPSS

Процентиль: 27%
0.0034
Низкий

8.8 High

CVSS3

Связанные уязвимости

CVSS3: 9.8
ubuntu
14 дней назад

(Malicious calendar invitations could use file URI attachments to launc ...)

CVSS3: 9.8
nvd
15 дней назад

Malicious calendar invitations could use file URI attachments to launch local or network-hosted executables on Windows, bypassing Thunderbird's normal executable attachment protections. With the new invitation display enabled, the attachment could also appear under a misleading filename. This vulnerability was fixed in Thunderbird 154 and Thunderbird 153.2.

CVSS3: 9.8
debian
15 дней назад

Malicious calendar invitations could use file URI attachments to launc ...

CVSS3: 9.8
github
14 дней назад

Malicious calendar invitations could use file URI attachments to launch local or network-hosted executables on Windows, bypassing Thunderbird's normal executable attachment protections. With the new invitation display enabled, the attachment could also appear under a misleading filename. This vulnerability was fixed in Thunderbird 154 and Thunderbird 153.2.

EPSS

Процентиль: 27%
0.0034
Низкий

8.8 High

CVSS3

Уязвимость CVE-2026-84637