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.
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Meta Information
Published
2026-03-30
Last Modified
2026-04-01
Generated
2026-06-16
AI Q&A
2026-03-31
EPSS Evaluated
2026-06-15
NVD
CVE-2026-33982
Affected Vendors & Products
Showing 1 associated CPE
Vendor Product Version / Range
freerdp freerdp to 3.24.2 (exc)
Helpful Resources
Exploitability
CWE
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KEV
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CWE ID Description
CWE-125 The product reads data past the end, or before the beginning, of the intended buffer.
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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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