CVE-2026-67304
Medium
Elevated severity or exploit probability.
CVSS base
7.5
HIGH
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
EPSS — probability of exploitation (30 days)
0.4%
30.6th percentile
CISA KEV
Not listed
Weakness / dates
CWE-476
Published 2026-08-01 · modified 2026-09-08
CVSS breakdown
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
| Attack Vector | N | Network |
| Attack Complexity | L | Low |
| Privileges Required | N | None |
| User Interaction | N | None |
| Scope | U | Unchanged |
| Confidentiality | N | None |
| Integrity | N | None |
| Availability | H | High |
Timeline
- 2026-08-01 — Published (NVD)
- 2026-09-08 — Last modified (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.
Affected
References
- https://github.com/FreeRDP/FreeRDP/commit/1cc783d4c78bd2f66d3a8582dfe70a663d141444
- exploit https://github.com/FreeRDP/FreeRDP/security/advisories/GHSA-78jj-45vh-jpm5
- https://www.vulncheck.com/advisories/freerdp-before-null-dereference-via-smartcard-cleanup
- exploit https://github.com/FreeRDP/FreeRDP/security/advisories/GHSA-78jj-45vh-jpm5