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CVE-2026-33977

Опубликовано: 30 мар. 2026
Источник: redhat
CVSS3: 6.5
EPSS Низкий

Описание

FreeRDP is a free implementation of the Remote Desktop Protocol. Prior to version 3.24.2, a malicious RDP server can crash the FreeRDP client by sending audio data in IMA ADPCM format with an invalid initial step index value (>= 89). The unvalidated step index is read directly from the network and used to index into a 89-entry lookup table, triggering a WINPR_ASSERT() failure and process abort via SIGABRT. This affects any FreeRDP client that has audio redirection (RDPSND) enabled, which is the default configuration. This issue has been patched in version 3.24.2.

A flaw was found in FreeRDP, a free implementation of the Remote Desktop Protocol (RDP). A malicious RDP server can exploit this vulnerability by sending specially crafted audio data in IMA ADPCM format with an invalid initial step index value. This unvalidated input can cause the FreeRDP client to crash, leading to a Denial of Service (DoS) for affected users. This issue impacts FreeRDP clients with audio redirection (RDPSND) enabled, which is the default configuration.

Меры по смягчению последствий

Mitigation for this issue is either not available or the currently available options do not meet the Red Hat Product Security criteria comprising ease of use and deployment, applicability to widespread installation base or stability.

Затронутые пакеты

ПлатформаПакетСостояниеРекомендацияРелиз
Red Hat Enterprise Linux 10freerdpFix deferred
Red Hat Enterprise Linux 6freerdpOut of support scope
Red Hat Enterprise Linux 7freerdpOut of support scope
Red Hat Enterprise Linux 8freerdpFix deferred
Red Hat Enterprise Linux 9freerdpFix deferred

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Дополнительная информация

Статус:

Moderate
Дефект:
CWE-1285
https://bugzilla.redhat.com/show_bug.cgi?id=2453224FreeRDP: FreeRDP: Denial of Service via malformed IMA ADPCM audio data

EPSS

Процентиль: 17%
0.00256
Низкий

6.5 Medium

CVSS3

Связанные уязвимости

CVSS3: 6.5
ubuntu
4 месяца назад

FreeRDP is a free implementation of the Remote Desktop Protocol. Prior to version 3.24.2, a malicious RDP server can crash the FreeRDP client by sending audio data in IMA ADPCM format with an invalid initial step index value (>= 89). The unvalidated step index is read directly from the network and used to index into a 89-entry lookup table, triggering a WINPR_ASSERT() failure and process abort via SIGABRT. This affects any FreeRDP client that has audio redirection (RDPSND) enabled, which is the default configuration. This issue has been patched in version 3.24.2.

CVSS3: 6.5
nvd
4 месяца назад

FreeRDP is a free implementation of the Remote Desktop Protocol. Prior to version 3.24.2, a malicious RDP server can crash the FreeRDP client by sending audio data in IMA ADPCM format with an invalid initial step index value (>= 89). The unvalidated step index is read directly from the network and used to index into a 89-entry lookup table, triggering a WINPR_ASSERT() failure and process abort via SIGABRT. This affects any FreeRDP client that has audio redirection (RDPSND) enabled, which is the default configuration. This issue has been patched in version 3.24.2.

CVSS3: 6.5
debian
4 месяца назад

FreeRDP is a free implementation of the Remote Desktop Protocol. Prior ...

CVSS3: 6.5
fstec
4 месяца назад

Уязвимость RDP-клиента FreeRDP, связанная с недостатком использования функции assert(), позволяющая нарушителю вызвать отказ в обслуживании

CVSS3: 6.5
redos
около 2 месяцев назад

Уязвимость freerdp3

EPSS

Процентиль: 17%
0.00256
Низкий

6.5 Medium

CVSS3