CVE-2026-91946: high-severity vulnerability in FreeRDP
FreeRDP before 3.31.0 Information Disclosure via RDPGFX ResetGraphics
Published · Updated
E-mail alert when it lands in KEV, gets a public PoC or its score goes up.
21Vexday Risk Score
No sign of exploitation. No public exploitation artifact known so far.
ssvc Trackcvss 7.1epss 0.5%
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.
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:N/VA:N/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%