CVE-2026-55827

EUVD-2026-43004
FreeRDP is a free implementation of the Remote Desktop Protocol. Prior to 3.27.1, FreeRDP clients launched with the non-default /cache:codec:rfx option pass desktop stride and height to RemoteFX decoding for Cache Bitmap V3 data while allocating bitmap->data only for the smaller DstWidth and DstHeight in gdi_Bitmap_Decompress, allowing a malicious RDP server to trigger a heap out-of-bounds write with attacker-controlled offset and content. This issue is fixed in version 3.27.1.
ProviderTypeBase ScoreAtk. VectorAtk. ComplexityPriv. RequiredVector
NISTPrimary
7.5 HIGH
NETWORK
HIGH
NONE
CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H
Base Score
CVSS 3.x
EPSS Score
Percentile: 26.37%
Affected Products (NVD)
VendorProductVersion
freerdpfreerdp
𝑥
< 3.27.1
𝑥
= Vulnerable software versions
Debian logo
Debian Releases
Debian Product
Codename
freerdp2
bookworm
vulnerable
bullseye
vulnerable
bullseye (security)
vulnerable
freerdp3
forky
3.30.0+dfsg-1
fixed
sid
3.30.0+dfsg-1
fixed
trixie
no-dsa
Ubuntu logo
Ubuntu Releases
Ubuntu Product
Codename
freerdp
bionic
needs-triage
jammy
dne
noble
dne
questing
dne
resolute
dne
xenial
needs-triage
freerdp2
bionic
needs-triage
focal
needs-triage
jammy
needs-triage
noble
needs-triage
questing
dne
resolute
dne
freerdp3
jammy
dne
noble
Fixed 3.30.0+dfsg-0ubuntu0.24.04.1
released
questing
ignored
resolute
Fixed 3.30.0+dfsg-0ubuntu0.26.04.1
released
Amazon Linux logo
Amazon Linux Releases
Amazon Package
Release
freerdp
Amazon Linux 2023
2:3.6.3-1.amzn2023.0.13
fixed
freerdp-debuginfo
Amazon Linux 2023
2:3.6.3-1.amzn2023.0.13
fixed
freerdp-debugsource
Amazon Linux 2023
2:3.6.3-1.amzn2023.0.13
fixed
freerdp-devel
Amazon Linux 2023
2:3.6.3-1.amzn2023.0.13
fixed
freerdp-libs
Amazon Linux 2023
2:3.6.3-1.amzn2023.0.13
fixed
freerdp-libs-debuginfo
Amazon Linux 2023
2:3.6.3-1.amzn2023.0.13
fixed
freerdp-server
Amazon Linux 2023
2:3.6.3-1.amzn2023.0.13
fixed
freerdp-server-debuginfo
Amazon Linux 2023
2:3.6.3-1.amzn2023.0.13
fixed
libwinpr
Amazon Linux 2023
2:3.6.3-1.amzn2023.0.13
fixed
libwinpr-debuginfo
Amazon Linux 2023
2:3.6.3-1.amzn2023.0.13
fixed
libwinpr-devel
Amazon Linux 2023
2:3.6.3-1.amzn2023.0.13
fixed