CVE-2026-55193

EUVD-2026-62664
FreeRDP is a free implementation of the Remote Desktop Protocol. Prior to 3.27.0, FreeRDP clients using TS Gateway accept a server-controlled max_xmit_frag value in libfreerdp/core/gateway/rpc_bind.c without bounding it to the 4088-byte ReceiveFragment allocation. A malicious gateway can advertise 65535 and then send a response fragment of the same length, causing rpc_channel_read in libfreerdp/core/gateway/rpc.c to write up to 65535 bytes into the smaller ReceiveFragment buffer. This can crash the client and may permit code execution through attacker-controlled heap corruption. This issue is fixed in version 3.27.0.
ProviderTypeBase ScoreAtk. VectorAtk. ComplexityPriv. RequiredVector
NISTPrimary
8.8 HIGH
NETWORK
LOW
NONE
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Base Score
CVSS 3.x
EPSS Score
Percentile: 36.58%
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
2:2.11.7-13.el8_10
fixed
RHEL 8.4 AUS
2:2.2.0-14.el8_4.4
fixed
RHEL 8.6 AUS
2:2.2.0-7.el8_6.13
fixed
RHEL 8.8 E4S
2:2.2.0-12.el8_8.12
fixed
RHEL 8.8 TUS
2:2.2.0-12.el8_8.12
fixed
RHEL 9
2:2.11.7-7.el9_8.7
fixed
freerdp-devel
RHEL 8
2:2.11.7-13.el8_10
fixed
RHEL 9
2:2.11.7-7.el9_8.7
fixed
freerdp-libs
RHEL 8
2:2.11.7-13.el8_10
fixed
RHEL 8.4 AUS
2:2.2.0-14.el8_4.4
fixed
RHEL 8.6 AUS
2:2.2.0-7.el8_6.13
fixed
RHEL 8.8 E4S
2:2.2.0-12.el8_8.12
fixed
RHEL 8.8 TUS
2:2.2.0-12.el8_8.12
fixed
RHEL 9
2:2.11.7-7.el9_8.7
fixed
libwinpr
RHEL 8
2:2.11.7-13.el8_10
fixed
RHEL 8.4 AUS
2:2.2.0-14.el8_4.4
fixed
RHEL 8.6 AUS
2:2.2.0-7.el8_6.13
fixed
RHEL 8.8 E4S
2:2.2.0-12.el8_8.12
fixed
RHEL 8.8 TUS
2:2.2.0-12.el8_8.12
fixed
RHEL 9
2:2.11.7-7.el9_8.7
fixed
libwinpr-devel
RHEL 8
2:2.11.7-13.el8_10
fixed
RHEL 8.4 AUS
2:2.2.0-14.el8_4.4
fixed
RHEL 8.6 AUS
2:2.2.0-7.el8_6.13
fixed
RHEL 8.8 E4S
2:2.2.0-12.el8_8.12
fixed
RHEL 8.8 TUS
2:2.2.0-12.el8_8.12
fixed
RHEL 9
2:2.11.7-7.el9_8.7
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/a863ef1cf1cdabf9019280e5658f806e73bb50e8
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-7rp4-66mc-j9vx