Description
FreeRDP 3.0.0-beta1 before 3.32.0 on Unix builds with PKCS#11 support has a stack-based buffer overflow in wprintKeyName() in WinPR's NCrypt PKCS#11 provider. It hex-encodes a key's CKA_ID, which can be up to 64 bytes, into a fixed 128-byte stack buffer. An attacker supplying a malicious PKCS#11 token or module whose key and matching certificate use a 55- to 64-byte CKA_ID can overflow the client's stack during key enumeration, causing a crash.
Affected products
freerdp: freerdp
References3
- github.com/FreeRDP/FreeRDP/security/advisories/GHSA-g8jw-gv54-r… ExploitVendor AdvisoryMitigation
- github.com/FreeRDP/FreeRDP/security/advisories/GHSA-g8jw-gv54-r… ExploitVendor AdvisoryMitigation
- www.vulncheck.com/advisories/freerdp-3.0.0-beta1-before-3.32.0-… Third Party Advisory
Metrics
- CVSS 3.1
-
4.6
MEDIUM
Score source: NVD
CVSS:3.1/AV:P/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H - CVSS 4.0
-
5.1
MEDIUM
Score source: CNA
CVSS:4.0/AV:P/AC:L/AT:N/PR:N/UI:P/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 - EPSS — exploit probability
- 0% percentile: 3 · as of 11 November 2026
- CWE
- CWE-121
Could this be exploited in your environment?
A patch closes the known hole. A penetration test shows what an attacker can still reach — with proof.