CVE-2026-24677
Analyzed Analyzed - Analysis Complete
Out-of-Bounds Read in FreeRDP H264 Encoder Before

Publication date: 2026-02-09

Last updated on: 2026-02-10

Assigner: GitHub, Inc.

Description
FreeRDP is a free implementation of the Remote Desktop Protocol. Prior to 3.22.0, ecam_encoder_compress_h264 trusts server-controlled dimensions and does not validate the source buffer size, leading to an out-of-bounds read in sws_scale. This vulnerability is fixed in 3.22.0.
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Meta Information
Published
2026-02-09
Last Modified
2026-02-10
Generated
2026-06-16
AI Q&A
2026-02-09
EPSS Evaluated
2026-06-14
NVD
CVE-2026-24677
Affected Vendors & Products
Showing 1 associated CPE
Vendor Product Version / Range
freerdp freerdp to 3.22.0 (exc)
Helpful Resources
Exploitability
CWE
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KEV
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CWE ID Description
CWE-416 The product reuses or references memory after it has been freed. At some point afterward, the memory may be allocated again and saved in another pointer, while the original pointer references a location somewhere within the new allocation. Any operations using the original pointer are no longer valid because the memory "belongs" to the code that operates on the new pointer.
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Executive Summary

This vulnerability exists in FreeRDP, a free implementation of the Remote Desktop Protocol. Before version 3.22.0, the function ecam_encoder_compress_h264 trusts server-controlled dimensions without validating the size of the source buffer. This lack of validation can lead to an out-of-bounds read in the sws_scale function.

Impact Analysis

The out-of-bounds read caused by this vulnerability can potentially lead to application crashes or undefined behavior, which may be exploited by an attacker to cause denial of service or possibly execute arbitrary code, depending on the context.

Compliance Impact

I don't know

Detection Guidance

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Mitigation Strategies

The vulnerability in FreeRDP is fixed in version 3.22.0. To mitigate this vulnerability, you should upgrade FreeRDP to version 3.22.0 or later.

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