What’s Vulnerable › Vulnerabilities
CVE-2011-2523
- Severity: critical (CVSS 9.8 v3.1)
- Exploited in the wild: not listed in CISA KEV
- EPSS: 96.2% probability of exploitation in the next 30 days
- Public exploit or detection template: yes
- Published: 2019-11-27 · updated 2026-06-16
- Weakness: CWE-78
Description
vsftpd 2.3.4 downloaded between 20110630 and 20110703 contains a backdoor which opens a shell on port 6200/tcp.
Affected products
- Debian Linux: 8.0, 9.0, 10.0
- Vsftpd Project Vsftpd: 2.3.4
References
- http://packetstormsecurity.com/files/162145/vsftpd-2.3.4-Backdoor-Command-Execution.html
- https://access.redhat.com/security/cve/cve-2011-2523
- https://packetstormsecurity.com/files/102745/VSFTPD-2.3.4-Backdoor-Command-Execution.html
- https://security-tracker.debian.org/tracker/CVE-2011-2523
- https://vigilance.fr/vulnerability/vsftpd-backdoor-in-version-2-3-4-10805
- https://www.openwall.com/lists/oss-security/2011/07/11/5
- http://packetstormsecurity.com/files/162145/vsftpd-2.3.4-Backdoor-Command-Execution.html
- https://access.redhat.com/security/cve/cve-2011-2523
- https://packetstormsecurity.com/files/102745/VSFTPD-2.3.4-Backdoor-Command-Execution.html
- https://security-tracker.debian.org/tracker/CVE-2011-2523
- https://vigilance.fr/vulnerability/vsftpd-backdoor-in-version-2-3-4-10805
- https://www.openwall.com/lists/oss-security/2011/07/11/5
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