CVE catalog
CVE-2026-109257
FreeRDP before 3.32.0 contains a double-free vulnerability in nsc_context_initialize_encode() that leaves dangling plane pointers after a partial buffer growth failure. Attackers using a crafted RDP c
- Severity
- High · CVSS 8.2
CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X - Published
- Updated
- Source
- [NVD] · [CVE record]
- EPSS
- 0.39% · Oct 25, 2026
FreeRDP before 3.32.0 contains a double-free vulnerability in nsc_context_initialize_encode() that leaves dangling plane pointers after a partial buffer growth failure. Attackers using a crafted RDP client can negotiate NSCodec with a large desktop geometry to trigger allocation failure, crashing the server during context teardown.
Vulnerable and fixed packages
Distribution-reported package versions and fixes. These do not depend on matching against the OpenFactory package catalog.
| Distribution | Package | Release | Version | Status |
|---|---|---|---|---|
| Debian | freerdp2 | bookworm | 2.11.7+dfsg1-6~deb12u1 | vulnerable |
| Cpe | freerdp | Not reported | Not reported | unknown |
Fixed-version evidence
| Distribution | Package | Type | Release | Fixed version | Urgency | Origin | Bugs |
|---|---|---|---|---|---|---|---|
| Debian | freerdp2 | source | bookworm | (unfixed) | not yet assigned | Not reported | Not reported |
OpenFactory catalog packages
[Debian 12 (Bookworm)]
- [freerdp2-dev]Affected
Source package: [freerdp2]
Details (2)
2.11.7+dfsg1-6~deb12u1· amd64 · bookwormAffected
nvd · freerdp2 · debian · bookworm
2.11.7+dfsg1-6~deb12u1· arm64 · bookwormAffected
nvd · freerdp2 · debian · bookworm
- [freerdp2-shadow-x11]Affected
Source package: [freerdp2]
Details (2)
2.11.7+dfsg1-6~deb12u1· amd64 · bookwormAffected
nvd · freerdp2 · debian · bookworm
2.11.7+dfsg1-6~deb12u1· arm64 · bookwormAffected
nvd · freerdp2 · debian · bookworm
- [freerdp2-wayland]Affected
Source package: [freerdp2]
Details (2)
2.11.7+dfsg1-6~deb12u1· amd64 · bookwormAffected
nvd · freerdp2 · debian · bookworm
2.11.7+dfsg1-6~deb12u1· arm64 · bookwormAffected
nvd · freerdp2 · debian · bookworm
- [freerdp2-x11]Affected
Source package: [freerdp2]
Details (2)
2.11.7+dfsg1-6~deb12u1· amd64 · bookwormAffected
nvd · freerdp2 · debian · bookworm
2.11.7+dfsg1-6~deb12u1· arm64 · bookwormAffected
nvd · freerdp2 · debian · bookworm
- [libfreerdp2-2]Affected
Source package: [freerdp2]
Details (2)
2.11.7+dfsg1-6~deb12u1· amd64 · bookwormAffected
nvd · freerdp2 · debian · bookworm
2.11.7+dfsg1-6~deb12u1· arm64 · bookwormAffected
nvd · freerdp2 · debian · bookworm
- [libfreerdp-client2-2]Affected
Source package: [freerdp2]
Details (2)
2.11.7+dfsg1-6~deb12u1· amd64 · bookwormAffected
nvd · freerdp2 · debian · bookworm
2.11.7+dfsg1-6~deb12u1· arm64 · bookwormAffected
nvd · freerdp2 · debian · bookworm
- [libfreerdp-server2-2]Affected
Source package: [freerdp2]
Details (2)
2.11.7+dfsg1-6~deb12u1· amd64 · bookwormAffected
nvd · freerdp2 · debian · bookworm
2.11.7+dfsg1-6~deb12u1· arm64 · bookwormAffected
nvd · freerdp2 · debian · bookworm
- [libfreerdp-shadow2-2]Affected
Source package: [freerdp2]
Details (2)
2.11.7+dfsg1-6~deb12u1· amd64 · bookwormAffected
nvd · freerdp2 · debian · bookworm
2.11.7+dfsg1-6~deb12u1· arm64 · bookwormAffected
nvd · freerdp2 · debian · bookworm
- [libfreerdp-shadow-subsystem2-2]Affected
Source package: [freerdp2]
Details (2)
2.11.7+dfsg1-6~deb12u1· amd64 · bookwormAffected
nvd · freerdp2 · debian · bookworm
2.11.7+dfsg1-6~deb12u1· arm64 · bookwormAffected
nvd · freerdp2 · debian · bookworm
- [libuwac0-0]Affected
Source package: [freerdp2]
Details (2)
2.11.7+dfsg1-6~deb12u1· amd64 · bookwormAffected
nvd · freerdp2 · debian · bookworm
2.11.7+dfsg1-6~deb12u1· arm64 · bookwormAffected
nvd · freerdp2 · debian · bookworm
- [libuwac0-dev]Affected
Source package: [freerdp2]
Details (2)
2.11.7+dfsg1-6~deb12u1· amd64 · bookwormAffected
nvd · freerdp2 · debian · bookworm
2.11.7+dfsg1-6~deb12u1· arm64 · bookwormAffected
nvd · freerdp2 · debian · bookworm
- [libwinpr2-2]Affected
Source package: [freerdp2]
Details (2)
2.11.7+dfsg1-6~deb12u1· amd64 · bookwormAffected
nvd · freerdp2 · debian · bookworm
2.11.7+dfsg1-6~deb12u1· arm64 · bookwormAffected
nvd · freerdp2 · debian · bookworm
- [libwinpr2-dev]Affected
Source package: [freerdp2]
Details (2)
2.11.7+dfsg1-6~deb12u1· amd64 · bookwormAffected
nvd · freerdp2 · debian · bookworm
2.11.7+dfsg1-6~deb12u1· arm64 · bookwormAffected
nvd · freerdp2 · debian · bookworm
- [libwinpr-tools2-2]Affected
Source package: [freerdp2]
Details (2)
2.11.7+dfsg1-6~deb12u1· amd64 · bookwormAffected
nvd · freerdp2 · debian · bookworm
2.11.7+dfsg1-6~deb12u1· arm64 · bookwormAffected
nvd · freerdp2 · debian · bookworm
- [winpr-utils]Affected
Source package: [freerdp2]
Details (2)
2.11.7+dfsg1-6~deb12u1· amd64 · bookwormAffected
nvd · freerdp2 · debian · bookworm
2.11.7+dfsg1-6~deb12u1· arm64 · bookwormAffected
nvd · freerdp2 · debian · bookworm
Observed:
References
- [https://ftp.suse.com/pub/projects/security/]
- [https://github.com/FreeRDP/FreeRDP/security/advisories/GHSA-2hhg-8xx6-v73w]
- [https://nvd.nist.gov/vuln/detail/CVE-2026-109257]
- [https://osv.dev/vulnerability/CVE-2026-109257]
- [https://security-tracker.debian.org/tracker/CVE-2026-109257]
- [https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-109257.json]
- [https://www.vulncheck.com/advisories/freerdp-before-3.32.0-double-free-via-nscodec-plane-growth-failure]
[Debian Security Tracker] · [FIRST EPSS] · [National Vulnerability Database (NVD)] · [OSV Package Vulnerability Database] · [Red Hat security advisories and VEX] · [SUSE security advisories and VEX]