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CVE-2026-55653

Опубликовано: 23 июн. 2026
Источник: debian
EPSS Низкий

Описание

A flaw was found in OpenSSH. A malicious SSH server can exploit a double free vulnerability in the Diffie-Hellman Group Exchange (DH-GEX) client path. This occurs during FIPS (Federal Information Processing Standards) mode known-group validation when the client processes attacker-controlled DH-GEX group parameters. Successful exploitation leads to client-side process termination, resulting in a Denial of Service (DoS).

Пакеты

ПакетСтатусВерсия исправленияРелизТип
opensshnot-affectedpackage

Примечания

  • https://bugzilla.redhat.com/show_bug.cgi?id=2462351

EPSS

Процентиль: 45%
0.0053
Низкий

Связанные уязвимости

CVSS3: 6.5
ubuntu
5 месяцев назад

A flaw was found in OpenSSH. A malicious SSH server can exploit a double free vulnerability in the Diffie-Hellman Group Exchange (DH-GEX) client path. This occurs during FIPS (Federal Information Processing Standards) mode known-group validation when the client processes attacker-controlled DH-GEX group parameters. Successful exploitation leads to client-side process termination, resulting in a Denial of Service (DoS).

CVSS3: 4.3
redhat
5 месяцев назад

A flaw was found in OpenSSH. A malicious SSH server can exploit a double free vulnerability in the Diffie-Hellman Group Exchange (DH-GEX) client path. This occurs during FIPS (Federal Information Processing Standards) mode known-group validation when the client processes attacker-controlled DH-GEX group parameters. Successful exploitation leads to client-side process termination, resulting in a Denial of Service (DoS).

CVSS3: 6.5
nvd
5 месяцев назад

A flaw was found in OpenSSH. A malicious SSH server can exploit a double free vulnerability in the Diffie-Hellman Group Exchange (DH-GEX) client path. This occurs during FIPS (Federal Information Processing Standards) mode known-group validation when the client processes attacker-controlled DH-GEX group parameters. Successful exploitation leads to client-side process termination, resulting in a Denial of Service (DoS).

CVSS3: 4.3
msrc
5 месяцев назад

Openssh: double free in red hat enterprise linux versions of openssh dh-gex client path during fips known-group validation leads to client-side denial of service

CVSS3: 6.5
redos
18 дней назад

Уязвимость openssh

EPSS

Процентиль: 45%
0.0053
Низкий