High severity · published Aug 1, 2026
CVE-2026-67288
FreeRDP before 3.29.0 Denial of Service via smartcard cache
7.5
CVSS
0.4%
EPSS
No
On KEV
Description
FreeRDP before 3.29.0 contains a null pointer dereference vulnerability in smartcard cache request decoders that accept NULL NDR pointers for LookupName in SCARD_IOCTL_READCACHEA and SCARD_IOCTL_WRITECACHEA operations. When smartcard emulation is enabled, attackers can send crafted smartcard cache requests with NULL lookup-name pointers to trigger strlen() on a null pointer, causing client process termination.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
None
Confidentiality
None
Integrity
None
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.4% · higher than 37% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
FR
FreeRDP · FreeRDP
before 3.29.0 · source: vendor, NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-67288
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-67288
Patch
https://github.com/FreeRDP/FreeRDP/commit/5370fb26fbf034ecd11d3026b6ad639b5fff493f
Patch
https://github.com/FreeRDP/FreeRDP/commit/f3b4347105114fe7453828736bea069999af319f
Patch
https://github.com/FreeRDP/FreeRDP/security/advisories/GHSA-ph3q-f9w8-7jf3
Patch
https://www.vulncheck.com/advisories/freerdp-before-denial-of-service-via-smartcard-cache
Not Applicable
https://github.com/FreeRDP/FreeRDP/security/advisories/GHSA-5wr6-8m8j-3h7f
More from FreeRDP
9.8
CVE-2026-63633
FreeRDP: Heap buffer overflow in Opus audio decode (`freerdp_dsp_decode_opus` resizes the wrong stream) — server→client
9.8
CVE-2026-55194
FreeRDPHeap-buffer-overflow write in TS Gateway RPC RESPONSE reassembly due to alloc_hint capacity mismatch
9.8
CVE-2026-55191
FreeRDP: Heap-buffer-overflow write in AVC444 YUV buffer allocation
9.8
CVE-2026-66402
FreeRDP before 3.29.0 TLS Certificate Identity Validation Bypass
9.8
CVE-2026-57156
FreeRDP: Integer overflow leading to heap buffer overflow in Orders Delta Points parsing