CVE-2015-3306: ProFTPD Improper Access Control Vulnerability
Affects ProFTPD ProFTPDSource CISA KEV
No CVSS score published yet
- Exploitation
Actively exploited – in CISA KEV since 10/08/2026
- KEV deadline
- 10/11/2026
- EPSS
- 99.5% chance of exploitation in 30 days – higher than 99% of CVEs
What to do
CISA required action
Apply mitigations in accordance with vendor instructions, ensuring compliance with CISA’s BOD 26-04 Prioritizing Security Updates Based on Risk (see URL in Notes) guidance and CISA’s “Forensics Triage Requirements” (see URL in Notes). Follow applicable BOD 26-04 guidance for cloud services or discontinue use of the product if mitigations are unavailable. Stakeholders are responsible for evaluating each asset's internet exposure and ensuring adherence to BOD 26-04 patching guidelines.
- proftpd.org (opens in a new tab)
- lists.debian.org/debian-security-announce/2015/msg00154.html (opens in a new tab)
- lists.opensuse.org/archives/list/[email protected]/message/WE6YZRG5UVXMGQ7IVDRYBPIWV4M6UUGM/ (opens in a new tab)
- cisa.gov/news-events/directives/bod-26-04-prioritizing-security-updates-based-risk (opens in a new tab)
- cisa.gov/news-events/directives/bod-26-04-implementation-guidance-prioritizing-security-updates-based-risk (opens in a new tab)
- nvd.nist.gov/vuln/detail/CVE-2015-3306 (opens in a new tab)
Description
ProFTPD contains an improper access control vulnerability that could allow remote attackers to read and write to arbitrary files via the site cpfr and site cpto commands.
Weaknesses
References
- proftpd.org (opens in a new tab)
- lists.debian.org/debian-security-announce/2015/msg00154.html (opens in a new tab)
- lists.opensuse.org/archives/list/[email protected]/message/WE6YZRG5UVXMGQ7IVDRYBPIWV4M6UUGM/ (opens in a new tab)
- cisa.gov/news-events/directives/bod-26-04-prioritizing-security-updates-based-risk (opens in a new tab)
- cisa.gov/news-events/directives/bod-26-04-implementation-guidance-prioritizing-security-updates-based-risk (opens in a new tab)
- nvd.nist.gov/vuln/detail/CVE-2015-3306 (opens in a new tab)
- cisa.gov/known-exploited-vulnerabilities-catalog?search=CVE-2015-3306 (opens in a new tab)