Null Pointer Dereference in FreeRDP Smartcard Device Control
CVE-2026-67304

8.7HIGH

Key Information:

Vendor

Freerdp

Status
Freerdp
Vendor
CVE Published:
1 August 2026

What is CVE-2026-67304?

A vulnerability exists in FreeRDP prior to version 3.29.0 due to inadequate handling of smartcard device control requests. Specifically, when the cleanup process encounters a faulty reader-state decoding, it can lead to a null pointer dereference. This issue arises when an attacker sends malformed IRP requests with non-zero cReaders alongside truncated reader-state data. Such actions can cause the application to crash, potentially leading to service disruptions.

Affected Version(s)

FreeRDP 0 < 3.29.0

FreeRDP 3.29.0

References

https://github.com/FreeRDP/FreeRDP/security/advisories/GH...
vendor-advisory
https://github.com/FreeRDP/FreeRDP/commit/1cc783d4c78bd2f...
patch
https://www.vulncheck.com/advisories/freerdp-before-null-...
third-party-advisory

CVSS V4

Score:
8.7
Severity:
HIGH
Confidentiality:
None
Integrity:
None
Availability:
High
Attack Vector:
Network
Attack Complexity:
Low
Attack Required:
None
Privileges Required:
Undefined
User Interaction:
None

Timeline

  • Vulnerability published

  • Vulnerability Reserved

.