CVE-2026-33982

Received Received - Intake

Heap Buffer Overflow in FreeRDP winpr_aligned_offset_recalloc

Publication date: 2026-03-30

Last updated on: 2026-04-01

Assigner: GitHub, Inc.

Description

FreeRDP is a free implementation of the Remote Desktop Protocol. Prior to version 3.24.2, there is a heap-buffer-overflow READ vulnerability at 24 bytes before the allocation, in winpr_aligned_offset_recalloc(). This issue has been patched in version 3.24.2.

CVSS Scores

EPSS Scores

Probability:
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Meta Information

Published

2026-03-30

Last Modified

2026-04-01

Generated

2026-07-06

AI Q&A

2026-03-31

EPSS Evaluated

2026-07-05

NVD

CVE-2026-33982

Affected Vendors & Products

Vendor	Product	Version / Range
freerdp	freerdp	to 3.24.2 (exc)

Helpful Resources

Exploitability

CWE

KEV

CWE ID	Description
CWE-125	The product reads data past the end, or before the beginning, of the intended buffer.

Attack-Flow Graph

Executive Summary

This vulnerability is a heap-buffer-overflow read issue in FreeRDP, a free implementation of the Remote Desktop Protocol. Specifically, prior to version 3.24.2, the function winpr_aligned_offset_recalloc() reads 24 bytes before the allocated memory buffer, which can lead to reading unintended memory areas.

The issue has been fixed in version 3.24.2.

Impact Analysis

This vulnerability can impact you by allowing an attacker with local access to cause a denial of service or potentially read sensitive memory contents due to the heap-buffer-overflow read. The CVSS score of 7.1 indicates a high severity with high impact on confidentiality and availability.

Mitigation Strategies

To mitigate this vulnerability, you should upgrade FreeRDP to version 3.24.2 or later, where the heap-buffer-overflow issue in winpr_aligned_offset_recalloc() has been patched.

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