CVE-2026-23533

EUVD-2026-3315
FreeRDP is a free implementation of the Remote Desktop Protocol. Prior to version 3.21.0, a client-side heap buffer overflow occurs in the RDPGFX ClearCodec decode path when maliciously crafted residual data causes out-of-bounds writes during color output. A malicious server can trigger a client‑side heap buffer overflow, causing a crash (DoS) and potential heap corruption with code‑execution risk depending on allocator behavior and surrounding heap layout. Version 3.21.0 contains a patch for the issue.
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: 35%
Affected Products (NVD)
VendorProductVersion
freerdpfreerdp
𝑥
< 3.21.0
𝑥
= Vulnerable software versions
Early Detection
Affected products identified ahead of NVD analysis through intelligence sources.
VendorProductVersionSource
Red HatRed Hat Enterprise Linux 10
2:3.10.3-5.el10_1.1 ≤
𝑥
< *
ADP
Red HatRed Hat Enterprise Linux 10.0 Extended Update Support
2:3.10.3-3.el10_0.1 ≤
𝑥
< *
ADP
Red HatRed Hat Enterprise Linux 7 Extended Lifecycle Support
0:2.1.1-5.el7_9.1 ≤
𝑥
< *
ADP
Red HatRed Hat Enterprise Linux 8
2:2.11.7-2.el8_10 ≤
𝑥
< *
ADP
Red HatRed Hat Enterprise Linux 8.2 Advanced Update Support
2:2.0.0-46.rc4.el8_2.6 ≤
𝑥
< *
ADP
Red HatRed Hat Enterprise Linux 8.4 Advanced Mission Critical Update Support
2:2.2.0-7.el8_4 ≤
𝑥
< *
ADP
Red HatRed Hat Enterprise Linux 8.4 Extended Update Support Long-Life Add-On
2:2.2.0-7.el8_4 ≤
𝑥
< *
ADP
Red HatRed Hat Enterprise Linux 8.6 Advanced Mission Critical Update Support
2:2.2.0-7.el8_6.1 ≤
𝑥
< *
ADP
Red HatRed Hat Enterprise Linux 8.6 Telecommunications Update Service
2:2.2.0-7.el8_6.1 ≤
𝑥
< *
ADP
Red HatRed Hat Enterprise Linux 8.6 Update Services for SAP Solutions
2:2.2.0-7.el8_6.1 ≤
𝑥
< *
ADP
Red HatRed Hat Enterprise Linux 8.8 Telecommunications Update Service
2:2.2.0-12.el8_8.1 ≤
𝑥
< *
ADP
Red HatRed Hat Enterprise Linux 8.8 Update Services for SAP Solutions
2:2.2.0-12.el8_8.1 ≤
𝑥
< *
ADP
Red HatRed Hat Enterprise Linux 9
2:2.11.7-1.el9_7.1 ≤
𝑥
< *
ADP
Red HatRed Hat Enterprise Linux 9.0 Update Services for SAP Solutions
2:2.4.1-3.el9_0 ≤
𝑥
< *
ADP
Red HatRed Hat Enterprise Linux 9.2 Update Services for SAP Solutions
2:2.4.1-6.el9_2.2 ≤
𝑥
< *
ADP
Red HatRed Hat Enterprise Linux 9.4 Extended Update Support
2:2.11.2-1.el9_4.1 ≤
𝑥
< *
ADP
Red HatRed Hat Enterprise Linux 9.6 Extended Update Support
2:2.11.7-1.el9_6.1 ≤
𝑥
< *
ADP
Debian logo
Debian Releases
Debian Product
Codename
freerdp2
bookworm
no-dsa
bullseye
vulnerable
bullseye (security)
vulnerable
freerdp3
forky
3.27.0+dfsg-1
fixed
sid
3.30.0+dfsg-1
fixed
trixie
3.15.0+dfsg-2.1+deb13u3
fixed
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 12 SP5
2.1.2-12.57.1
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
freerdp2
suse enterprise desktop 15 SP7
2.11.7-150700.3.8.1
fixed
suse enterprise sap 15 SP7
2.11.7-150700.3.8.1
fixed
suse enterprise server 15 SP7
2.11.7-150700.3.8.1
fixed
suse enterprise workstation 15 SP7
2.11.7-150700.3.8.1
fixed
freerdp2-devel
suse enterprise desktop 15 SP7
2.11.7-150700.3.8.1
fixed
suse enterprise sap 15 SP7
2.11.7-150700.3.8.1
fixed
suse enterprise server 15 SP7
2.11.7-150700.3.8.1
fixed
suse enterprise workstation 15 SP7
2.11.7-150700.3.8.1
fixed
freerdp2-proxy
suse enterprise desktop 15 SP7
2.11.7-150700.3.8.1
fixed
suse enterprise sap 15 SP7
2.11.7-150700.3.8.1
fixed
suse enterprise server 15 SP7
2.11.7-150700.3.8.1
fixed
suse enterprise workstation 15 SP7
2.11.7-150700.3.8.1
fixed
freerdp2-server
suse enterprise desktop 15 SP7
2.11.7-150700.3.8.1
fixed
suse enterprise sap 15 SP7
2.11.7-150700.3.8.1
fixed
suse enterprise server 15 SP7
2.11.7-150700.3.8.1
fixed
suse enterprise workstation 15 SP7
2.11.7-150700.3.8.1
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
libfreerdp2-2
suse enterprise desktop 15 SP7
2.11.7-150700.3.8.1
fixed
suse enterprise sap 15 SP7
2.11.7-150700.3.8.1
fixed
suse enterprise server 15 SP7
2.11.7-150700.3.8.1
fixed
suse enterprise workstation 15 SP7
2.11.7-150700.3.8.1
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
libwinpr2-2
suse enterprise desktop 15 SP7
2.11.7-150700.3.8.1
fixed
suse enterprise sap 15 SP7
2.11.7-150700.3.8.1
fixed
suse enterprise server 15 SP7
2.11.7-150700.3.8.1
fixed
suse enterprise workstation 15 SP7
2.11.7-150700.3.8.1
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
winpr2-devel
suse enterprise desktop 15 SP7
2.11.7-150700.3.8.1
fixed
suse enterprise sap 15 SP7
2.11.7-150700.3.8.1
fixed
suse enterprise server 12 SP5
2.1.2-12.57.1
fixed
suse enterprise server 15 SP7
2.11.7-150700.3.8.1
fixed
suse enterprise workstation 15 SP7
2.11.7-150700.3.8.1
fixed
Red Hat logo
Red Hat Enterprise Linux Releases
Red Hat Product
Release
freerdp
RHEL 8
2:2.11.7-2.el8_10
fixed
RHEL 8.2 AUS
2:2.0.0-46.rc4.el8_2.6
fixed
RHEL 8.4 AUS
2:2.2.0-7.el8_4
fixed
RHEL 8.6 AUS
2:2.2.0-7.el8_6.1
fixed
RHEL 8.6 E4S
2:2.2.0-7.el8_6.1
fixed
RHEL 8.6 TUS
2:2.2.0-7.el8_6.1
fixed
RHEL 8.8 E4S
2:2.2.0-12.el8_8.1
fixed
RHEL 8.8 TUS
2:2.2.0-12.el8_8.1
fixed
RHEL 9
2:2.11.7-1.el9_7.1
fixed
freerdp-devel
RHEL 8
2:2.11.7-2.el8_10
fixed
RHEL 9
2:2.11.7-1.el9_7.1
fixed
freerdp-libs
RHEL 8
2:2.11.7-2.el8_10
fixed
RHEL 8.2 AUS
2:2.0.0-46.rc4.el8_2.6
fixed
RHEL 8.4 AUS
2:2.2.0-7.el8_4
fixed
RHEL 8.6 AUS
2:2.2.0-7.el8_6.1
fixed
RHEL 8.6 E4S
2:2.2.0-7.el8_6.1
fixed
RHEL 8.6 TUS
2:2.2.0-7.el8_6.1
fixed
RHEL 8.8 E4S
2:2.2.0-12.el8_8.1
fixed
RHEL 8.8 TUS
2:2.2.0-12.el8_8.1
fixed
RHEL 9
2:2.11.7-1.el9_7.1
fixed
libwinpr
RHEL 8
2:2.11.7-2.el8_10
fixed
RHEL 8.2 AUS
2:2.0.0-46.rc4.el8_2.6
fixed
RHEL 8.4 AUS
2:2.2.0-7.el8_4
fixed
RHEL 8.6 AUS
2:2.2.0-7.el8_6.1
fixed
RHEL 8.6 E4S
2:2.2.0-7.el8_6.1
fixed
RHEL 8.6 TUS
2:2.2.0-7.el8_6.1
fixed
RHEL 8.8 E4S
2:2.2.0-12.el8_8.1
fixed
RHEL 8.8 TUS
2:2.2.0-12.el8_8.1
fixed
RHEL 9
2:2.11.7-1.el9_7.1
fixed
libwinpr-devel
RHEL 8
2:2.11.7-2.el8_10
fixed
RHEL 8.2 AUS
2:2.0.0-46.rc4.el8_2.6
fixed
RHEL 8.4 AUS
2:2.2.0-7.el8_4
fixed
RHEL 8.6 AUS
2:2.2.0-7.el8_6.1
fixed
RHEL 8.6 E4S
2:2.2.0-7.el8_6.1
fixed
RHEL 8.6 TUS
2:2.2.0-7.el8_6.1
fixed
RHEL 8.8 E4S
2:2.2.0-12.el8_8.1
fixed
RHEL 8.8 TUS
2:2.2.0-12.el8_8.1
fixed
RHEL 9
2:2.11.7-1.el9_7.1
fixed
Amazon Linux logo
Amazon Linux Releases
Amazon Package
Release
freerdp
Amazon Linux 2
2:2.11.7-1.amzn2.0.3
fixed
Amazon Linux 2023
2:3.6.3-1.amzn2023.0.2
fixed
freerdp-debuginfo
Amazon Linux 2
2:2.11.7-1.amzn2.0.3
fixed
Amazon Linux 2023
2:3.6.3-1.amzn2023.0.2
fixed
freerdp-debugsource
Amazon Linux 2023
2:3.6.3-1.amzn2023.0.2
fixed
freerdp-devel
Amazon Linux 2
2:2.11.7-1.amzn2.0.3
fixed
Amazon Linux 2023
2:3.6.3-1.amzn2023.0.2
fixed
freerdp-libs
Amazon Linux 2
2:2.11.7-1.amzn2.0.3
fixed
Amazon Linux 2023
2:3.6.3-1.amzn2023.0.2
fixed
freerdp-libs-debuginfo
Amazon Linux 2023
2:3.6.3-1.amzn2023.0.2
fixed
freerdp-server
Amazon Linux 2023
2:3.6.3-1.amzn2023.0.2
fixed
freerdp-server-debuginfo
Amazon Linux 2023
2:3.6.3-1.amzn2023.0.2
fixed
libwinpr
Amazon Linux 2
2:2.11.7-1.amzn2.0.3
fixed
Amazon Linux 2023
2:3.6.3-1.amzn2023.0.2
fixed
libwinpr-debuginfo
Amazon Linux 2023
2:3.6.3-1.amzn2023.0.2
fixed
libwinpr-devel
Amazon Linux 2
2:2.11.7-1.amzn2.0.3
fixed
Amazon Linux 2023
2:3.6.3-1.amzn2023.0.2
fixed
Common Weakness Enumeration
References
https://github.com/FreeRDP/FreeRDP/blob/38514dfa5813aa945a86cfbcec279033f8394468/libfreerdp/codec/clear.c#L268-L281
https://github.com/FreeRDP/FreeRDP/blob/38514dfa5813aa945a86cfbcec279033f8394468/libfreerdp/codec/clear.c#L336
https://github.com/FreeRDP/FreeRDP/releases/tag/3.21.0
https://github.com/FreeRDP/FreeRDP/security/advisories/GHSA-32q9-m5qr-9j2v
https://access.redhat.com/errata/RHSA-2026:2048
https://access.redhat.com/errata/RHSA-2026:2081
https://access.redhat.com/errata/RHSA-2026:2222
https://access.redhat.com/errata/RHSA-2026:2714
https://access.redhat.com/errata/RHSA-2026:2736
https://access.redhat.com/errata/RHSA-2026:2770
https://access.redhat.com/errata/RHSA-2026:2824
https://access.redhat.com/errata/RHSA-2026:2952
https://access.redhat.com/errata/RHSA-2026:3036
https://access.redhat.com/errata/RHSA-2026:3037
https://access.redhat.com/errata/RHSA-2026:3038
https://access.redhat.com/errata/RHSA-2026:3039
https://access.redhat.com/errata/RHSA-2026:3041
https://access.redhat.com/security/cve/CVE-2026-23533
https://bugzilla.redhat.com/show_bug.cgi?id=2430886
https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-23533.json