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CVE-2026-76881

Опубликовано: 19 авг. 2026
Источник: redhat
CVSS3: 4.7
EPSS Низкий

Описание

CMS protocol dissector crash in 4.6.0 to 4.6.7 and 4.4.0 to 4.4.18 allows denial of service

A flaw was found in Wireshark. A NULL pointer dereference vulnerability exists within the CMS (Cryptographic Message Syntax) protocol dissector. This issue can be triggered by processing a specially crafted network capture file, leading to an application crash. A remote attacker could exploit this to cause a denial of service (DoS).

Отчет

A NULL pointer dereference was found in the CMS protocol dissector in Wireshark versions 4.4.0 through 4.4.18 and 4.6.0 through 4.6.7. Red Hat Enterprise Linux 6, 7, 8, and 9 ship Wireshark versions prior to the affected range and are not vulnerable. Red Hat Enterprise Linux 10 and Red Hat In-Vehicle OS ship an affected version of Wireshark.

Меры по смягчению последствий

Do not open untrusted packet capture files or capture traffic from untrusted networks with Wireshark.

Затронутые пакеты

ПлатформаПакетСостояниеРекомендацияРелиз
Red Hat Enterprise Linux 10wiresharkFix deferred
Red Hat Enterprise Linux 6wiresharkNot affected
Red Hat Enterprise Linux 7wiresharkNot affected
Red Hat Enterprise Linux 8wiresharkNot affected
Red Hat Enterprise Linux 9wiresharkNot affected

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Дополнительная информация

Статус:

Moderate
Дефект:
CWE-476
https://bugzilla.redhat.com/show_bug.cgi?id=2520078wireshark: Wireshark: Denial of service via CMS protocol dissector crash

EPSS

Процентиль: 1%
0.00105
Низкий

4.7 Medium

CVSS3

Связанные уязвимости

CVSS3: 4.7
ubuntu
7 дней назад

CMS protocol dissector crash in 4.6.0 to 4.6.7 and 4.4.0 to 4.4.18 allows denial of service

CVSS3: 4.7
nvd
8 дней назад

CMS protocol dissector crash in 4.6.0 to 4.6.7 and 4.4.0 to 4.4.18 allows denial of service

CVSS3: 4.7
debian
8 дней назад

CMS protocol dissector crash in 4.6.0 to 4.6.7 and 4.4.0 to 4.4.18 all ...

CVSS3: 4.7
github
8 дней назад

CMS protocol dissector crash in 4.6.0 to 4.6.7 and 4.4.0 to 4.4.18 allows denial of service

EPSS

Процентиль: 1%
0.00105
Низкий

4.7 Medium

CVSS3