FreeRDP before 3.29.0 contains a null pointer dereference vulnerability in smartcard cache request decoders that accept NULL NDR pointers for… (CVE-2026-67288)
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.
AI Analysis
Technical Summary
The vulnerability in FreeRDP prior to version 3.29.0 involves a null pointer dereference in the smartcard cache request decoders. Specifically, the decoders improperly handle NULL NDR pointers for the LookupName field in SCARD_IOCTL_READCACHEA and SCARD_IOCTL_WRITECACHEA operations. When smartcard emulation is enabled, an attacker can exploit this by sending crafted smartcard cache requests containing NULL lookup-name pointers. This triggers a call to strlen() on a null pointer, leading to client process termination. The issue is classified under CWE-476 (NULL Pointer Dereference) and has a CVSS 3.1 base score of 7.5 (AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H), indicating a network attack vector with low complexity, no privileges or user interaction required, and causing high impact on availability.
Potential Impact
Successful exploitation results in denial of service by terminating the FreeRDP client process when smartcard emulation is enabled. There is no impact on confidentiality or integrity according to the CVSS vector. The vulnerability does not require authentication or user interaction and can be triggered remotely over the network.
Mitigation Recommendations
A fix is available in FreeRDP version 3.29.0 and later. Users should upgrade to version 3.29.0 or newer to remediate this vulnerability. Since this is not a cloud service, remediation depends on applying the official fix. No vendor advisory content was provided to indicate alternative mitigations or temporary fixes. Patch status is not yet confirmed by vendor advisory; however, the version 3.29.0 is stated as the fixed version in the description.
FreeRDP before 3.29.0 contains a null pointer dereference vulnerability in smartcard cache request decoders that accept NULL NDR pointers for… (CVE-2026-67288)
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 v3.1
Score 7.5high
Affected software
Run on your own infrastructure? Check whether these packages are installed with threat-finder — our free open-source scanner.
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
The vulnerability in FreeRDP prior to version 3.29.0 involves a null pointer dereference in the smartcard cache request decoders. Specifically, the decoders improperly handle NULL NDR pointers for the LookupName field in SCARD_IOCTL_READCACHEA and SCARD_IOCTL_WRITECACHEA operations. When smartcard emulation is enabled, an attacker can exploit this by sending crafted smartcard cache requests containing NULL lookup-name pointers. This triggers a call to strlen() on a null pointer, leading to client process termination. The issue is classified under CWE-476 (NULL Pointer Dereference) and has a CVSS 3.1 base score of 7.5 (AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H), indicating a network attack vector with low complexity, no privileges or user interaction required, and causing high impact on availability.
Potential Impact
Successful exploitation results in denial of service by terminating the FreeRDP client process when smartcard emulation is enabled. There is no impact on confidentiality or integrity according to the CVSS vector. The vulnerability does not require authentication or user interaction and can be triggered remotely over the network.
Mitigation Recommendations
A fix is available in FreeRDP version 3.29.0 and later. Users should upgrade to version 3.29.0 or newer to remediate this vulnerability. Since this is not a cloud service, remediation depends on applying the official fix. No vendor advisory content was provided to indicate alternative mitigations or temporary fixes. Patch status is not yet confirmed by vendor advisory; however, the version 3.29.0 is stated as the fixed version in the description.
Technical Details
- Gcve Source
- db.gcve.eu
- Osv Id
- GHSA-hq8h-rvcv-jvh4
- Osv Schema Version
- 1.4.0
- Aliases
- ["CVE-2026-67288"]
- Database Specific Severity
- HIGH
- Cvss Version
- 3.1
Threat ID: 6a6e6298bf32cb7a344f9d43
Added to database: 08/01/2026, 21:18:16 UTC
Last enriched: 08/01/2026, 21:25:01 UTC
Last updated: 09/13/2026, 23:06:22 UTC
Views: 58
Community Reviews
0 reviewsCrowdsource mitigation strategies, share intel context, and vote on the most helpful responses. Sign in to add your voice and help keep defenders ahead.
Want to contribute mitigation steps or threat intel context? Sign in or create an account to join the community discussion.
Actions
Updates to AI analysis require Pro Console access. Upgrade inside Console → Billing.
Need more coverage?
Upgrade to Pro Console for AI refresh and higher limits.
For incident response and remediation, OffSeq services can help resolve threats faster.
Latest Threats
Check if your credentials are on the dark web
Instant breach scanning across billions of leaked records. Free tier available.