CVE-2026-67288Public exploitNetwork attack vectorHinoki check available

Client crash via NULL smartcard lookup name

Published Aug 1, 2026 · Updated Aug 1, 2026

Null pointer dereference in FreeRDP before 3.29.0 allows remote attackers to terminate the client through smartcard cache requests. The read- and write-cache decoders accept a zero NDR pointer as a valid LookupName, then card_id_and_name_a() passes it to strlen(). Reachability requires smartcard redirection and emulation plus a peer-controlled cache request; demonstrated impact is termination of the client and its active RDP session.

CVSS severity8.7
High
EPSS probability0.35%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkAvailable
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Summary

What happened

Null pointer dereference in FreeRDP before 3.29.0 allows remote attackers to terminate the client through smartcard cache requests. The read- and write-cache decoders accept a zero NDR pointer as a valid LookupName, then card_id_and_name_a() passes it to strlen(). Reachability requires smartcard redirection and emulation plus a peer-controlled cache request; demonstrated impact is termination of the client and its active RDP session.

The record

CVE
CVE-2026-67288
Published
Aug 1, 2026
Updated
Aug 1, 2026
Vendor
FreeRDP
Product
FreeRDP
Classifications
CWE-476, T1499.004
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Aug 1, 2026CVE publishedPublication date reported by the CVE source.
  2. Aug 1, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=0 <3.29.0

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

FreeRDP · FreeRDPversion=0 <3.29.0

Published CVSS scores

8.7VulnCheckCVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N
7.5VulnCheckCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-476NULL Pointer Dereference
T1499.004Application or System Exploitation

Public exploit references

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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