Remote code execution via unvalidated SFTP filenames
Published Oct 8, 2024 · Updated Aug 19, 2026
Remote code execution in Microsoft OpenSSH for Windows allows remote attackers to execute code through a crafted SFTP directory listing. The SFTP client accepts server-supplied filenames containing directory separators and uses them during recursive downloads without rejecting traversal paths. Exploitation requires a user-initiated recursive SFTP transfer from an attacker-controlled server, after which crafted paths can write outside the chosen destination and enable code execution.
Summary
What happened
Remote code execution in Microsoft OpenSSH for Windows allows remote attackers to execute code through a crafted SFTP directory listing. The SFTP client accepts server-supplied filenames containing directory separators and uses them during recursive downloads without rejecting traversal paths. Exploitation requires a user-initiated recursive SFTP transfer from an attacker-controlled server, after which crafted paths can write outside the chosen destination and enable code execution.
The record
- CVE
- CVE-2024-43581
- Published
- Oct 8, 2024
- Updated
- Aug 19, 2026
- Vendor
- Microsoft
- Product
- Windows Server 2019
- Classifications
- CWE-73, T1203
- Attack vector
- network
- Privileges
- authenticated
Timeline
How it unfolded
- Oct 8, 2024CVE publishedPublication date reported by the CVE source.
- Aug 19, 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?
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- Affected versionversion=10.0.17763.0 <10.0.17763.6414
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
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Weakness, pattern, technique
Public exploit references
No public exploit references are available in this record.
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Technologies
Your stack
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Your stack
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