What is CVE-2026-24677?

CVE-2026-24677 is a critical-severity vulnerability in Freerdp, classified under Use After Free. CVSS score: 9.1/10. Published 2026-02-09.

How severe is CVE-2026-24677?

Critical severity. CVSS v3 base score is 9.1 out of 10.

Use After Free in Freerdp

CVE-2026-24677

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. T…

Vulnerability class: Use-After-Free

EPSS: 0.005 (38.4th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 9.1 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H.

Affected products

Freerdp — versions < 3.22.0

Weakness classification (CWE)

CWE-416 — Use After Free

References

security-advisories@github.com (x_refsource_CONFIRM, Patch, Vendor Advisory)
security-advisories@github.com (Patch, x_refsource_MISC)

Frequently asked questions

What is CVE-2026-24677?: CVE-2026-24677 is a critical-severity vulnerability in Freerdp, classified under Use After Free. CVSS score: 9.1/10. Published 2026-02-09.
How severe is CVE-2026-24677?: Critical severity. CVSS v3 base score is 9.1 out of 10.