FreeRDP <=3.21.0 ecam_encoder_compress_h264 OOB Read in sws_scale
CVE-2026-24677 Published on February 9, 2026
FreeRDP has a heap-buffer-overflow in ecam_encoder_compress_h264
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.
Weakness Type
What is a Dangling pointer Vulnerability?
Referencing memory after it has been freed can cause a program to crash, use unexpected values, or execute code.
CVE-2026-24677 has been classified to as a Dangling pointer vulnerability or weakness.
Products Associated with CVE-2026-24677
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Affected Versions
FreeRDP Version < 3.22.0 is affected by CVE-2026-24677Exploit Probability
EPSS (Exploit Prediction Scoring System) scores estimate the probability that a vulnerability will be exploited in the wild within the next 30 days. The percentile shows you how this score compares to all other vulnerabilities.