What is CVE-2026-45700?

CVE-2026-45700 is a critical-severity vulnerability in Freerdp, classified under Out-of-bounds Write. CVSS score: 9.8/10. Published 2026-05-29.

How severe is CVE-2026-45700?

Critical severity. CVSS v3 base score is 9.8 out of 10.

Buffer overflow in Freerdp

CVE-2026-45700

FreeRDP is a free implementation of the Remote Desktop Protocol. Prior to 3.26.0, FreeRDP's planar bitmap decoder has an out-of-bounds heap write when decoding RLE planar data. In libfreerdp/codec/planar.c, freerdp_bitmap_decompress_planar…

Vulnerability class: Buffer Overflow

EPSS: 0.000 (6.1th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 9.8 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.

Affected products

Freerdp — versions < 3.26.0

Weakness classification (CWE)

CWE-787 — Out-of-bounds Write

References

security-advisories@github.com (x_refsource_CONFIRM, Exploit, Mitigation, Vendor Advisory)

Frequently asked questions

What is CVE-2026-45700?: CVE-2026-45700 is a critical-severity vulnerability in Freerdp, classified under Out-of-bounds Write. CVSS score: 9.8/10. Published 2026-05-29.
How severe is CVE-2026-45700?: Critical severity. CVSS v3 base score is 9.8 out of 10.