CVE-2011-2523 EXPLOIT
9.8
CRITICAL · CVSS 3.1 · EPSS 96.2% (pctl 100)
Patch early
A public exploit exists.
Description
vsftpd 2.3.4 downloaded between 20110630 and 20110703 contains a backdoor which opens a shell on port 6200/tcp.
Scoring
| CVSS | 9.8 (CRITICAL, v3.1) |
|---|---|
| Vector | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H |
| EPSS | 96.18% — more likely to be exploited than 100% of all CVEs |
| Weakness | CWE-78 |
| On CISA KEV | no |
| Public exploit | yes |
| Published | 2019-11-27 |
| Last modified | 2026-06-16 |
Affected (2)
| Vendor | Product |
|---|---|
| debian | debian linux |
| vsftpd project | vsftpd |
Public exploits
| Source | Title | Date |
|---|---|---|
| exploit-db | vsftpd 2.3.4 - Backdoor Command Execution | 2021-04-12 |
| exploit-db | vsftpd 2.3.4 - Backdoor Command Execution (Metasploit) | 2011-07-05 |
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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