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Vulnerability record · CVE-2026-67304 · published 1 August 2026

CVE-2026-67304: Freerdp null pointer dereference vulnerability

Freerdp · Freerdp

FreeRDP before 3.29.0 contains a null pointer dereference vulnerability in smartcard device control request cleanup when reader-state decoding fails. Attackers can send malformed smartcard IRP requests with non-zero cReaders and truncated reader-state data to crash the process via null pointer access in free_reader_states functions.

8.7 CVSS 4.0 High EPSS 0.65% · top 50.9% CWE-476 · NULL pointer dereference
8.7CVSS 4.0 base score
0.65%EPSS exploitation probability, 30 days
NoNot in CISA KEV
1Affected product versions listed by NVD
4References, 2 tagged exploit
8 Sep 2026Last modified by NVD

Description

FreeRDP before 3.29.0 contains a null pointer dereference vulnerability in smartcard device control request cleanup when reader-state decoding fails. Attackers can send malformed smartcard IRP requests with non-zero cReaders and truncated reader-state data to crash the process via null pointer access in free_reader_states functions.

CVSS:4.0/AV:N/AC:L/AT:N/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:

Affected products

1 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
https://github.com/FreeRDP/FreeRDP/commit/1cc783d4c78bd2f66d3a8582dfe70a663d141444 Patch
https://github.com/FreeRDP/FreeRDP/security/advisories/GHSA-78jj-45vh-jpm5 ExploitVendor Advisory
https://www.vulncheck.com/advisories/freerdp-before-null-dereference-via-smartcard-cleanup PatchThird Party Advisory
https://github.com/FreeRDP/FreeRDP/security/advisories/GHSA-78jj-45vh-jpm5 ExploitVendor Advisory

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Related vulnerabilities

Same products first, then exploited flaws of the same weakness class.

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Source: NIST National Vulnerability Database (record CVE-2026-67304), CISA KEV, FIRST EPSS (scores of 2026-09-26). This page is refreshed as NVD updates the record.