CVE-2011-2523
CRITICAL
9.8
CVSS Score
Published: November 27, 2019 at 08:36 PM UTC
Updated: June 16, 2026 at 11:31 PM UTC
3 products affected across 3 vendorsDebian LinuxVsftpdVsftpd
Using vsftpd by vsftpd?
Get instant alerts when new vulnerabilities affect vsftpd - before attackers find them.
Real-time alertsTrack your software stackFree plan available
Severity
CRITICAL9.8
Exploit prediction
EPSS 96%
Description
vsftpd 2.3.4 downloaded between 20110630 and 20110703 contains a backdoor which opens a shell on port 6200/tcp.
Affected
Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.
Remediation
No guide yetNo remediation guidance has been written for this CVE yet, and no fixed version or vendor advisory is recorded against it.
References (6)
x_refsource_MISCThird Party Advisory
Source: [email protected]
https://access.redhat.com/security/cve/cve-2011-2523x_refsource_MISCExploitThird Party AdvisoryVDB Entry
Source: [email protected]
https://packetstormsecurity.com/files/102745/VSFTPD-2.3.4-Backdoor-Command-Execution.htmlx_refsource_MISCThird Party Advisory
Source: [email protected]
https://security-tracker.debian.org/tracker/CVE-2011-2523x_refsource_MISCThird Party Advisory
Source: [email protected]
https://vigilance.fr/vulnerability/vsftpd-backdoor-in-version-2-3-4-10805Mailing Listx_refsource_MLISTThird Party Advisory
Source: [email protected]
https://www.openwall.com/lists/oss-security/2011/07/11/5CVSS
- Attack Vector
- NETWORK
- Complexity
- LOW
- Privileges
- NONE
- User Interaction
- NONE
- Scope
- UNCHANGED
- Confidentiality
- HIGH
- Integrity
- HIGH
- Availability
- HIGH
Vector?
Quick Info
StatusMODIFIED
CWE
CWE-78
Get alerted
Stop reading CVE feeds looking for your own stack
Track the products you run and VulnTracker tells you when a new CVE affects them — with what is known about fixing it, and nothing about the rest.
Free plan, no card