CVE-2026-55194

EUVD-2026-62667
FreeRDP is a free implementation of the Remote Desktop Protocol. Prior to 3.27.0, rpc_client_recv_fragment in libfreerdp/core/gateway/rpc_client.c ensures the response reassembly stream capacity using only the server-declared alloc_hint rather than the actual StubLength about to be written. A malicious TS Gateway can send a PTYPE_RESPONSE with a small alloc_hint and a much larger frag_length, causing Stream_Write to copy attacker-controlled stub data beyond the 4096-byte pdu->s buffer. This can crash the client and may permit code execution through heap corruption. This issue is fixed in version 3.27.0.
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: 47.8%
Affected Products (NVD)
VendorProductVersion
freerdpfreerdp
𝑥
< 3.27.0
𝑥
= Vulnerable software versions
Debian logo
Debian Releases
Debian Product
Codename
freerdp2
bookworm
vulnerable
freerdp3
forky
3.31.1+dfsg-1
fixed
sid
3.32.0+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
Red Hat logo
Red Hat Enterprise Linux Releases
Red Hat Product
Release
freerdp
RHEL 8
2:2.11.7-12.el8_10
fixed
RHEL 8.4 AUS
2:2.2.0-14.el8_4.3
fixed
RHEL 8.6 AUS
2:2.2.0-7.el8_6.12
fixed
RHEL 8.8 E4S
2:2.2.0-12.el8_8.11
fixed
RHEL 8.8 TUS
2:2.2.0-12.el8_8.11
fixed
RHEL 9
2:2.11.7-7.el9_8.6
fixed
freerdp-devel
RHEL 8
2:2.11.7-12.el8_10
fixed
RHEL 9
2:2.11.7-7.el9_8.6
fixed
freerdp-libs
RHEL 8
2:2.11.7-12.el8_10
fixed
RHEL 8.4 AUS
2:2.2.0-14.el8_4.3
fixed
RHEL 8.6 AUS
2:2.2.0-7.el8_6.12
fixed
RHEL 8.8 E4S
2:2.2.0-12.el8_8.11
fixed
RHEL 8.8 TUS
2:2.2.0-12.el8_8.11
fixed
RHEL 9
2:2.11.7-7.el9_8.6
fixed
libwinpr
RHEL 8
2:2.11.7-12.el8_10
fixed
RHEL 8.4 AUS
2:2.2.0-14.el8_4.3
fixed
RHEL 8.6 AUS
2:2.2.0-7.el8_6.12
fixed
RHEL 8.8 E4S
2:2.2.0-12.el8_8.11
fixed
RHEL 8.8 TUS
2:2.2.0-12.el8_8.11
fixed
RHEL 9
2:2.11.7-7.el9_8.6
fixed
libwinpr-devel
RHEL 8
2:2.11.7-12.el8_10
fixed
RHEL 8.4 AUS
2:2.2.0-14.el8_4.3
fixed
RHEL 8.6 AUS
2:2.2.0-7.el8_6.12
fixed
RHEL 8.8 E4S
2:2.2.0-12.el8_8.11
fixed
RHEL 8.8 TUS
2:2.2.0-12.el8_8.11
fixed
RHEL 9
2:2.11.7-7.el9_8.6
fixed
Amazon Linux logo
Amazon Linux Releases
Amazon Package
Release
freerdp
Amazon Linux 2
2:2.11.7-1.amzn2.0.13
fixed
Amazon Linux 2023
2:3.6.3-1.amzn2023.0.13
fixed
freerdp-debuginfo
Amazon Linux 2
2:2.11.7-1.amzn2.0.13
fixed
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 2
2:2.11.7-1.amzn2.0.13
fixed
Amazon Linux 2023
2:3.6.3-1.amzn2023.0.13
fixed
freerdp-libs
Amazon Linux 2
2:2.11.7-1.amzn2.0.13
fixed
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 2
2:2.11.7-1.amzn2.0.13
fixed
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 2
2:2.11.7-1.amzn2.0.13
fixed
Amazon Linux 2023
2:3.6.3-1.amzn2023.0.13
fixed
Common Weakness Enumeration
References
https://github.com/FreeRDP/FreeRDP/commit/9f2da52c2341cc14a96ad12e69c5b83d0bcd8b5a
https://github.com/FreeRDP/FreeRDP/pull/12873
https://github.com/FreeRDP/FreeRDP/releases/tag/3.27.0
https://github.com/FreeRDP/FreeRDP/security/advisories/GHSA-9gxm-3mf5-f5cx