CVE-2026-91946

EUVD-2026-78803
FreeRDP versions before 3.31.0 contain an information disclosure vulnerability in the RDPGFX server's ResetGraphics PDU serializer that fails to initialize padding bytes in the fixed 340-byte wire format. Attackers can receive uninitialized heap memory including live pointers and GLib function addresses transmitted in the PDU, defeating heap ASLR and disclosing the GLib module base address.
ProviderTypeBase ScoreAtk. VectorAtk. ComplexityPriv. RequiredVector
NISTPrimary
6.5 MEDIUM
NETWORK
LOW
LOW
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
Base Score
CVSS 3.x
EPSS Score
Percentile: 44.73%
Affected Products (NVD)
VendorProductVersion
freerdpfreerdp
2.0.0 ≤
𝑥
< 3.31.0
𝑥
= Vulnerable software versions
Debian logo
Debian Releases
Debian Product
Codename
freerdp2
bookworm
vulnerable
freerdp3
forky
3.32.2+dfsg-1
fixed
sid
3.32.2+dfsg-1
fixed
trixie
vulnerable
Ubuntu logo
Ubuntu Releases
Ubuntu Product
Codename
freerdp
bionic
needs-triage
jammy
dne
noble
dne
resolute
dne
xenial
needs-triage
freerdp2
bionic
needs-triage
focal
needs-triage
jammy
needs-triage
noble
needs-triage
resolute
dne
freerdp3
jammy
dne
noble
Fixed 3.31.0+dfsg-0ubuntu0.24.04.1
released
resolute
Fixed 3.31.0+dfsg-0ubuntu0.26.04.1
released
Amazon Linux logo
Amazon Linux Releases
Amazon Package
Release
freerdp
Amazon Linux 2
2:2.11.7-1.amzn2.0.16
fixed
Amazon Linux 2023
2:3.31.0-1.amzn2023
fixed
freerdp-debuginfo
Amazon Linux 2
2:2.11.7-1.amzn2.0.16
fixed
Amazon Linux 2023
2:3.31.0-1.amzn2023
fixed
freerdp-debugsource
Amazon Linux 2023
2:3.31.0-1.amzn2023
fixed
freerdp-devel
Amazon Linux 2
2:2.11.7-1.amzn2.0.16
fixed
Amazon Linux 2023
2:3.31.0-1.amzn2023
fixed
freerdp-libs
Amazon Linux 2
2:2.11.7-1.amzn2.0.16
fixed
Amazon Linux 2023
2:3.31.0-1.amzn2023
fixed
freerdp-libs-debuginfo
Amazon Linux 2023
2:3.31.0-1.amzn2023
fixed
freerdp-server
Amazon Linux 2023
2:3.31.0-1.amzn2023
fixed
freerdp-server-debuginfo
Amazon Linux 2023
2:3.31.0-1.amzn2023
fixed
libwinpr
Amazon Linux 2
2:2.11.7-1.amzn2.0.16
fixed
Amazon Linux 2023
2:3.31.0-1.amzn2023
fixed
libwinpr-debuginfo
Amazon Linux 2023
2:3.31.0-1.amzn2023
fixed
libwinpr-devel
Amazon Linux 2
2:2.11.7-1.amzn2.0.16
fixed
Amazon Linux 2023
2:3.31.0-1.amzn2023
fixed
Common Weakness Enumeration
References
https://github.com/FreeRDP/FreeRDP/commit/483c9388119f06bac420d92053cff9ef94e83bea
https://github.com/FreeRDP/FreeRDP/security/advisories/GHSA-r7jx-j9h7-j4xj
https://www.vulncheck.com/advisories/freerdp-before-3.31.0-information-disclosure-via-rdpgfx-resetgraphics
https://github.com/FreeRDP/FreeRDP/security/advisories/GHSA-r7jx-j9h7-j4xj