CVE-2026-121406: medium-severity vulnerability in FreeRDP
FreeRDP before 3.32.2 Client Denial of Service via Zero-Output ZGFX Payload
Published
E-mail alert when it lands in KEV, gets a public PoC or its score goes up.
13Vexday Risk Score
No sign of exploitation. No public exploitation artifact known so far.
ssvc Trackcvss 5.3epss 0.2%
FreeRDP before 3.32.2 allows a client assertion abort because rdpgfx_on_data_received rejects only negative zgfx_decompress status and passes the resulting null output pointer to Stream_StaticConstInit. A malicious RDP server can send a zero-output ZGFX payload on the RDPGFX channel after session activation to terminate the client.
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N
Affected products
FreeRDP · FreeRDPRelated CVEs — FreeRDP
In the same product, most dangerous first.
CVE-2026-45700HIGHHeap-buffer-overflow write in planar bitmap decoderEPSS 6.1%CVE-2026-44420HIGHFreeRDP cliprdr server heap-buffer-overflow via undersized capabilitySetLength in CB_CLIP_CAPSEPSS 4.6%CVE-2024-32459CRITICALFreeRDP Out-Of-Bounds Read in ncrush_decompressEPSS 3.7%CVE-2022-24882CRITICALServer side NTLM does not properly check parameters in FreeRDPEPSS 2.8%CVE-2022-24883HIGHFreeRDP Server authentication might allow invalid credentials to passEPSS 2.3%CVE-2020-11019MEDIUMOut of bound read in update_recv in FreeRDPEPSS 2.3%