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CVE-2026-33983

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CVE-2026-33983

Published: Mar 30, 2026

Modified: Mar 31, 2026

PUBLISHED

CVSS v3.1

6.5

MEDIUM

Description

FreeRDP is a free implementation of the Remote Desktop Protocol. Prior to version 3.24.2, progressive_decompress_tile_upgrade() detects a mismatch via progressive_rfx_quant_cmp_equal() but only emits WLog_WARN, execution continues. The wrapped value (247) is used as a shift exponent, causing undefined behavior and an approximately 80 billion iteration loop (CPU DoS). This issue has been patched in version 3.24.2.

VendorProductVersions

FreeRDP

FreeRDP

affected
< 3.24.2

Weaknesses (CWE)

CWE-190
CWE-252

CVSS v3.1 Details

CVSS v3.1 Vector

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

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

Required

Scope

Unchanged

Confidentiality

None

Integrity

None

Availability

High

References

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