Client memory disclosure via oversized parallel read
Published Oct 12, 2022 · Updated Nov 3, 2025
Information disclosure in FreeRDP clients 2.8.0 and earlier allows remote attackers to read client memory via parallel port redirection. The parallel_process_irp_read function allocates the requested Length, reads fewer bytes from the redirected file, but returns the full buffer rather than the read count. Exposure requires a Unix client launched with /parallel and an active connection to the attacker's RDP server; server implementations are unaffected.
Summary
What happened
Information disclosure in FreeRDP clients 2.8.0 and earlier allows remote attackers to read client memory via parallel port redirection. The parallel_process_irp_read function allocates the requested Length, reads fewer bytes from the redirected file, but returns the full buffer rather than the read count. Exposure requires a Unix client launched with /parallel and an active connection to the attacker's RDP server; server implementations are unaffected.
The record
- CVE
- CVE-2022-39282
- Published
- Oct 12, 2022
- Updated
- Nov 3, 2025
- Vendor
- FreeRDP
- Product
- FreeRDP
- Classifications
- CWE-908
- Attack vector
- network
- Privileges
- authenticated
Timeline
How it unfolded
- Oct 12, 2022CVE publishedPublication date reported by the CVE source.
- Nov 3, 2025Record 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.
- Affected versionversion=<= 2.8.0
What conditions does exploitation require?
What is affected?
Published CVSS scores
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.
Weakness, pattern, technique
Public exploit references
- FreeRDP-RCE exploit chainfunctional · demonstrated
Labels summarize the accepted research assessment. They do not indicate a test against your environment.
Reported exploitation
- FreeRDP-RCE public exploit chainexploit chain
Technologies
Your stack
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Your stack
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