vsftpd through 3.0.5 contains an access control bypass vulnerability that allows authenticated FTP users to execute denied commands by issuing RFC 775 X-prefixed aliases. The cmds_denied check in process_post_login() compares literal tokens, so attackers can send XRMD, XMKD, XCWD, XPWD, or XCUP to perform blocked operations like deleting directories.

Attack Vector Network

Attack Complexity High

Privileges Required Low

Attack Requirements Present

User Interaction None

Vulnerable System Confidentiality Impact None

Vulnerable System Integrity Impact Low

Vulnerable System Availability Impact None

Subsequent System Confidentiality Impact None

Subsequent System Integrity Impact None

Subsequent System Availability Impact None

Attack Vector Network

Attack Complexity High

Privileges Required Low

Scope Unchanged

Confidentiality Impact None

Integrity Impact Low

Availability Impact None

User Interaction None

No CVSS v3.0

No CVSS v2

This CVE is not in the KEV list.

No EPSS score available.

Key SSVC decision points have not yet been added.

Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).

Vendor Product Default status Versions
vsftpd vsftpd unaffected
Version Status Constraints
0 affected ≤ 3.0.5

No data.

No data.

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Project Subscriptions

Vendors Products
Vsftpd Project Subscribe
Vsftpd Subscribe
Advisories

No advisories yet.

Fixes

Solution

No solution given by the vendor.

Workaround

No workaround given by the vendor.

References
Link Providers
https://abraxaslabs.tech/research/vsftpd-cmds-denied-alias cve-icon cve-icon
https://security.appspot.com/vsftpd.html cve-icon cve-icon
https://www.vulncheck.com/advisories/vsftpd-through-3.0.5-cmds-denied-bypass-via-rfc-775-command-aliases cve-icon cve-icon
History

Fri, 30 Oct 2026 11:45:00 +0000

Type Values Removed Values Added
Description vsftpd through 3.0.5 contains an access control bypass vulnerability that allows authenticated FTP users to execute denied commands by issuing RFC 775 X-prefixed aliases. The cmds_denied check in process_post_login() compares literal tokens, so attackers can send XRMD, XMKD, XCWD, XPWD, or XCUP to perform blocked operations like deleting directories.
Title vsftpd through 3.0.5 cmds_denied Bypass via RFC 775 Command Aliases
First Time appeared Vsftpd Project
Vsftpd Project vsftpd
Weaknesses CWE-184
CPEs cpe:2.3:a:vsftpd_project:vsftpd:*:*:*:*:*:*:*:*
Vendors & Products Vsftpd Project
Vsftpd Project vsftpd
References
Metrics cvssV3_1

{'score': 3.1, 'vector': 'CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:N/I:L/A:N'}

cvssV4_0

{'score': 2.3, 'vector': 'CVSS:4.0/AV:N/AC:H/AT:P/PR:L/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N'}

Projects

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cve-icon MITRE

Status: PUBLISHED

Assigner: VulnCheck

Published:

Updated: 2026-10-30T11:31:13.756Z

Reserved: 2026-10-30T10:53:32.356Z

Link: CVE-2026-119567

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Received

Published: 2026-10-30T12:16:44.433

Modified: 2026-10-30T12:16:44.433

Link: CVE-2026-119567

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-10-30T12:45:12Z

Weaknesses