CVE-2026-67304Public exploitNetwork attack vectorHinoki check available

Process crash via null smartcard reader-state cleanup

Published Aug 1, 2026 · Updated Aug 1, 2026

Null pointer dereference in FreeRDP before 3.29.0 allows remote attackers to crash a client or proxy through malformed smartcard requests. The parsers set a nonzero cReaders before truncated rgReaderStates decoding fails, and free_reader_states_a/w then indexes the null array. A client must enable smartcard redirection and connect to a malicious RDP server, or a proxy must enable smartcard interception; impact is process termination only.

CVSS severity8.7
High
EPSS probability0.37%
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 crash a client or proxy through malformed smartcard requests. The parsers set a nonzero cReaders before truncated rgReaderStates decoding fails, and free_reader_states_a/w then indexes the null array. A client must enable smartcard redirection and connect to a malicious RDP server, or a proxy must enable smartcard interception; impact is process termination only.

The record

CVE
CVE-2026-67304
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.

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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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