CVE-2026-24677
Out-of-Bounds Read in FreeRDP H264 Encoder Before
Publication date: 2026-02-09
Last updated on: 2026-02-10
Assigner: GitHub, Inc.
Description
Description
CVSS Scores
EPSS Scores
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Meta Information
Affected Vendors & Products
| Vendor | Product | Version / Range |
|---|---|---|
| freerdp | freerdp | to 3.22.0 (exc) |
Helpful Resources
Exploitability
| 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 Any operations using the original pointer are no longer valid because the memory "belongs" to the code that operates on the new pointer. |
Attack-Flow Graph
AI Powered Q&A
Can you explain this vulnerability to me?
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.
How can this vulnerability impact me? :
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.
How does this vulnerability affect compliance with common standards and regulations (like GDPR, HIPAA)?:
I don't know
How can this vulnerability be detected on my network or system? Can you suggest some commands?
I don't know
What immediate steps should I take to mitigate this vulnerability?
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.