Security readout for executives and security teams
Plain-English summary
ZesleCP versions up to 3.1.9 have an authenticated remote code execution flaw. A logged-in attacker can abuse FTP account creation to run operating-system commands on the server. This can lead to full compromise of hosted sites and the control panel host.
Executive priority
Prioritize remediation for internet-facing or multi-user ZesleCP servers. The flaw can allow server takeover after login, and public exploit material exists. Treat as urgent where untrusted users have panel access.
Technical view
CVE-2021-47794 is CWE-78 command injection in ZesleCP FTP account creation. The CVSS 3.1 score is 8.8: network exploitable, low complexity, low privileges, no user interaction, with high confidentiality, integrity, and availability impact.
Likely exposure
Organizations running ZesleCP <=3.1.9 are exposed, especially if the control panel is reachable by many users or the internet. The attack requires authenticated access, so compromised or low-privileged panel accounts increase risk.
Exploitation context
Public exploit and demonstration references exist, but the provided sources do not show active exploitation and it is not listed as CISA KEV. The main risk is abuse by any authenticated account able to reach the vulnerable FTP account creation function.
Researcher notes
Evidence supports authenticated RCE through command injection in FTP account creation for ZesleCP <=3.1.9. Sources do not identify a specific fixed version or confirmed in-the-wild exploitation. Avoid assuming exploitability beyond authenticated access and affected versions.
Mitigation direction
- Identify all ZesleCP deployments and their versions.
- Check ZesleCP vendor guidance for fixed versions or supported remediation.
- Upgrade only according to confirmed vendor release guidance.
- Restrict control panel access to trusted networks or VPN.
- Limit FTP account creation privileges to trusted administrators.
- Review and remove unnecessary or unknown panel accounts.
Validation and detection
- Confirm whether any host runs ZesleCP <=3.1.9.
- Review ZesleCP user roles with FTP account creation rights.
- Audit recent FTP account creations for suspicious names or unexpected changes.
- Check server logs for abnormal control panel activity.
- Review outbound network connections from affected servers.
- Verify applied remediation against vendor guidance.
Public sources used
Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.
Conservative CVE-to-ATT&CK context
These mappings and lookup hints may be relevant to the vulnerability behavior, CWE, affected product, or exposure path. Glexia-inferred context is not an official MITRE, ATT&CK, CWE, or CVE Program mapping.
ATT&CK lookup starting points
Use these exact CWE pages and searches to review the Glexia ATT&CK library from this CVE's weakness and description context.
CWE-78: Command execution behavior lookup
Command injection weaknesses can lead defenders to review execution techniques and command interpreter telemetry. Open the exact CWE lookup page first, then review the ATT&CK searches from that MITRE weakness context. This is a Glexia lookup hint, not an official ATT&CK mapping.
Open ATT&CK lookupExecution behavior lookup
The CVE wording references code or command execution, so execution technique review may help defensive triage. This is a Glexia inferred lookup path, not an official MITRE, ATT&CK, or CVE Program mapping.
Open ATT&CK lookupCVE-2021-47794 mapping review
Open the CVE-to-ATT&CK bridge for reviewed, inferred, or future official mappings tied to this CVE.
Open ATT&CK lookup- Severity
- High
- CVSS
- 8.8 (3.1)
- Known Exploited
- No
- Published
Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
CNA and ADP enrichment extracted from CVE v5
These fields come from the CVE record and ADP containers, not from Glexia's Take. They preserve time-varying source decisions such as CISA SSVC, KEV status, CVSS metrics, and provider references.
CVSS vector scores
1 official scoreWe collect every scored CVSS vector available in the official CNA and ADP containers. When more than one version is present, the table keeps the source vectors side by side instead of collapsing them into the highest score.
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H2.85.9Primary CVE scoreVulnerability scoring details
Base CVSS 3.1 score
8.8HighVector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Source materials
- CVE List V5 sourceCVE List V5
- ExploitDB-50233CVE reference · exploit
- ZesleCP Official WebsiteCVE reference · product
- Exploit Demonstration VideoCVE reference · exploit
- VulnCheck Advisory: ZesleCP 3.1.9 - Remote Code Execution (RCE) (Authenticated)CVE reference · third-party-advisory
Products and packages named in the record
CWE details
CWE links open Glexia weakness intelligence pages with official CWE context, developer remediation guidance, and related CVE mappings.
Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')
Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection') represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.