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CVE-2026-33982

FreeRDP: FreeRDP: Information disclosure and denial of service via heap-buffer-overflow read

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Severity

Moderate

Red Hat Product Security

6.6

CVSS 3.1

Review impact separately from score.

Published · March 31, 2026

Updated · June 30, 2026

Description

A flaw was found in FreeRDP, a free implementation of the Remote Desktop Protocol. This vulnerability, a heap-buffer-overflow read, exists in the winpr_aligned_offset_recalloc() function. A local attacker could exploit this flaw, with user interaction, to read sensitive information from memory, leading to information disclosure, or cause the application to crash, resulting in a denial of service.

Statement

Red Hat systems require user authentication in order to interact with FreeRDP binaries. Unauthenticated interaction is not possible in default configurations and so the risk posed by this flaw is slightly mitigated to Red hat customers.

CVSS score applicability

The CVSS score(s) listed for this vulnerability do not reflect the associated product's status, and are included for informational purposes to better understand the severity of this vulnerability.

Mitigation

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.

CVSS / CWE

CVSS 3.1 · 6.6
CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:U/C:H/I:N/A:H

CWE-125 · Out-of-bounds Read