VulnerabilityModified

CVE-2026-45700

FreeRDP is a free implementation of the Remote Desktop Protocol.

HIGH 7.7EPSS 4.39%

Does this matter?

High impact if exploited, but EPSS currently rates exploitation as unlikely (4.39%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.

Description

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() validates the X destination coordinate nXDst against the caller-provided destination stride (nDstStep) even when it is writing into the internal temp buffer pTempData. An attacker can bypass the check with a large nDstStep and a large nXDst, causing planar_decompress_plane_rle() to write past the end of pTempData. This vulnerability is fixed in 3.26.0.

CVSS 4.0: 7.7 HIGHCVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:P/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/M
EPSS: 4.39% probability · 91th percentile
CISA KEV: Not listed
Weakness: CWE-787
Affected: freerdp/freerdp
Source: security-advisories@github.com

References

Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.