Vulnerability · Published Oct 30, 2026 · Assigned by VulnCheck
CVE-2026-119567vsftpd through 3.0.5 cmds_denied Bypass via RFC 775 Command Aliases
Low 3.1
In plain English
A low-severity security flaw in vsftpd from vsftpd. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.2% (higher than 12% of all known vulnerabilities).
Severity (CVSS 3.1)3.1Low
Exploit odds (30 days)0.2%top 87.8% of all CVEs
Exploited in the wildNo reportsCISA SSVC: none
Attack toolingNoneno public tooling known
Official 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.
Affected packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| Debian:12 | vsftpd | no fix listed | DEBIAN-CVE-2026-119567 |
| Debian:13 | vsftpd | no fix listed | DEBIAN-CVE-2026-119567 |
| Debian:14 | vsftpd | no fix listed | DEBIAN-CVE-2026-119567 |
| Ubuntu:22.04:LTS | vsftpd | no fix listed | UBUNTU-CVE-2026-119567 |
| Ubuntu:24.04:LTS | vsftpd | no fix listed | UBUNTU-CVE-2026-119567 |
| Ubuntu:26.04:LTS | vsftpd | no fix listed | UBUNTU-CVE-2026-119567 |
| Ubuntu:26.10 | vsftpd | no fix listed | UBUNTU-CVE-2026-119567 |
Affected products (as reported)
Weakness: CWE-184 · Vector: CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:N/I:L/A:N
References
- https://abraxaslabs.tech/research/vsftpd-cmds-denied-alias third-party-advisory
- https://security.appspot.com/vsftpd.html product
- VulnCheck Advisory: vsftpd through 3.0.5 cmds_denied Bypass via RFC 775 Command Aliases third-party-advisory