CVE-2026-22853

EUVD-2026-2674
FreeRDP is a free implementation of the Remote Desktop Protocol. Prior to 3.20.1, RDPEAR’s NDR array reader does not perform bounds checking on the on‑wire element count and can write past the heap buffer allocated from hints, causing a heap buffer overflow in ndr_read_uint8Array. This vulnerability is fixed in 3.20.1.
ProviderTypeBase ScoreAtk. VectorAtk. ComplexityPriv. RequiredVector
NISTPrimary
9.8 CRITICAL
NETWORK
LOW
NONE
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Base Score
CVSS 3.x
EPSS Score
Percentile: 49.26%
Affected Products (NVD)
VendorProductVersion
freerdpfreerdp
𝑥
< 3.20.1
𝑥
= Vulnerable software versions
Early Detection
Affected products identified ahead of NVD analysis through intelligence sources.
VendorProductVersionSource
Red HatRed Hat Enterprise Linux 10
2:3.10.3-12.el10_2.2 ≤
𝑥
< *
ADP
Red HatRed Hat Enterprise Linux 10
2:3.10.3-5.el10_1.2 ≤
𝑥
< *
ADP
Red HatRed Hat Enterprise Linux 10.0 Extended Update Support
2:3.10.3-3.el10_0.2 ≤
𝑥
< *
ADP
Debian logo
Debian Releases
Debian Product
Codename
freerdp2
bookworm
no-dsa
bullseye
vulnerable
bullseye (security)
vulnerable
freerdp3
forky
3.30.0+dfsg-1
fixed
sid
3.30.0+dfsg-1
fixed
trixie
3.15.0+dfsg-2.1+deb13u3
fixed
Ubuntu logo
Ubuntu Releases
Ubuntu Product
Codename
freerdp
bionic
not-affected
jammy
dne
noble
dne
plucky
dne
questing
dne
xenial
not-affected
freerdp2
bionic
not-affected
focal
not-affected
jammy
not-affected
noble
not-affected
plucky
ignored
questing
dne
freerdp3
jammy
dne
noble
not-affected
plucky
ignored
questing
Fixed 3.16.0+dfsg-2ubuntu0.3
released
openSUSE logo
openSUSE / SLES Releases
openSUSE Product
Release
freerdp
suse enterprise desktop 15 SP7
3.10.3-150700.3.3.1
fixed
suse enterprise sap 15 SP7
3.10.3-150700.3.3.1
fixed
suse enterprise server 15 SP7
3.10.3-150700.3.3.1
fixed
suse enterprise workstation 15 SP7
3.10.3-150700.3.3.1
fixed
freerdp-devel
suse enterprise desktop 15 SP7
3.10.3-150700.3.3.1
fixed
suse enterprise sap 15 SP7
3.10.3-150700.3.3.1
fixed
suse enterprise server 15 SP7
3.10.3-150700.3.3.1
fixed
suse enterprise workstation 15 SP7
3.10.3-150700.3.3.1
fixed
freerdp-proxy
suse enterprise desktop 15 SP7
3.10.3-150700.3.3.1
fixed
suse enterprise sap 15 SP7
3.10.3-150700.3.3.1
fixed
suse enterprise server 15 SP7
3.10.3-150700.3.3.1
fixed
suse enterprise workstation 15 SP7
3.10.3-150700.3.3.1
fixed
freerdp-proxy-plugins
suse enterprise desktop 15 SP7
3.10.3-150700.3.3.1
fixed
suse enterprise sap 15 SP7
3.10.3-150700.3.3.1
fixed
suse enterprise server 15 SP7
3.10.3-150700.3.3.1
fixed
suse enterprise workstation 15 SP7
3.10.3-150700.3.3.1
fixed
freerdp-sdl
suse enterprise desktop 15 SP7
3.10.3-150700.3.3.1
fixed
suse enterprise sap 15 SP7
3.10.3-150700.3.3.1
fixed
suse enterprise server 15 SP7
3.10.3-150700.3.3.1
fixed
suse enterprise workstation 15 SP7
3.10.3-150700.3.3.1
fixed
freerdp-server
suse enterprise desktop 15 SP7
3.10.3-150700.3.3.1
fixed
suse enterprise sap 15 SP7
3.10.3-150700.3.3.1
fixed
suse enterprise server 15 SP7
3.10.3-150700.3.3.1
fixed
suse enterprise workstation 15 SP7
3.10.3-150700.3.3.1
fixed
libfreerdp-server-proxy3-3
suse enterprise desktop 15 SP7
3.10.3-150700.3.3.1
fixed
suse enterprise sap 15 SP7
3.10.3-150700.3.3.1
fixed
suse enterprise server 15 SP7
3.10.3-150700.3.3.1
fixed
suse enterprise workstation 15 SP7
3.10.3-150700.3.3.1
fixed
libfreerdp3-3
suse enterprise desktop 15 SP7
3.10.3-150700.3.3.1
fixed
suse enterprise sap 15 SP7
3.10.3-150700.3.3.1
fixed
suse enterprise server 15 SP7
3.10.3-150700.3.3.1
fixed
suse enterprise workstation 15 SP7
3.10.3-150700.3.3.1
fixed
librdtk0-0
suse enterprise desktop 15 SP7
3.10.3-150700.3.3.1
fixed
suse enterprise sap 15 SP7
3.10.3-150700.3.3.1
fixed
suse enterprise server 15 SP7
3.10.3-150700.3.3.1
fixed
suse enterprise workstation 15 SP7
3.10.3-150700.3.3.1
fixed
libwinpr3-3
suse enterprise desktop 15 SP7
3.10.3-150700.3.3.1
fixed
suse enterprise sap 15 SP7
3.10.3-150700.3.3.1
fixed
suse enterprise server 15 SP7
3.10.3-150700.3.3.1
fixed
suse enterprise workstation 15 SP7
3.10.3-150700.3.3.1
fixed
winpr-devel
suse enterprise desktop 15 SP7
3.10.3-150700.3.3.1
fixed
suse enterprise sap 15 SP7
3.10.3-150700.3.3.1
fixed
suse enterprise server 15 SP7
3.10.3-150700.3.3.1
fixed
suse enterprise workstation 15 SP7
3.10.3-150700.3.3.1
fixed
Common Weakness Enumeration
References
https://github.com/FreeRDP/FreeRDP/releases/tag/3.20.1
https://github.com/FreeRDP/FreeRDP/security/advisories/GHSA-47v9-p4gp-w5ch
https://access.redhat.com/errata/RHSA-2026:19033
https://access.redhat.com/errata/RHSA-2026:3068
https://access.redhat.com/errata/RHSA-2026:4121
https://access.redhat.com/security/cve/CVE-2026-22853
https://bugzilla.redhat.com/show_bug.cgi?id=2429647
https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-22853.json