CVE-2021-47794: ZesleCP 3.1.9 contains an authenticated remote code execution vulnerability that allows attackers to create ma

Q: How do I fix CVE-2021-47794?

zeslecp: upgrade to newer than 3.1.9. Exact commands for each OS are on this page.

Q: Is CVE-2021-47794 being exploited?

CVE-2021-47794 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

Q: What does CVE-2021-47794 affect?

CVE-2021-47794 affects zeslecp. Severity is high (CVSS 8.8). ZesleCP 3.1.9 contains an authenticated remote code execution vulnerability that allows attackers to create malicious FTP accounts with shell injection payloads. Attackers can exploit the FTP account creation endpoint by injecting a reverse

Q: How urgent is CVE-2021-47794?

Priority 52/100. High severity; Public exploit reference

This month

HIGH 8.8UPGRADE

CVE-2021-47794 is a high-severity flaw (CVSS 8.8) affecting zeslecp. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

ZesleCP 3.1.9 contains an authenticated remote code execution vulnerability that allows attackers to create malicious FTP accounts with shell injection payloads. Attackers can exploit the FTP account creation endpoint by injecting a reverse shell command that establishes a network connection to a specified listening host.

Why this priority

High severity
Public exploit reference

A fixed release or distro patch exists.

Risk facts

CVSS score	8.8 (High)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	Low
User interaction	None
EPSS exploit chance	1.0% (top 37%)
CISA exploited list	No
Weakness	CWE-78
Published	2026-01-16
Last modified	2026-06-17

Publisher (CNA): VulnCheck · Vendor: zesle

Last updated 2026-06-17 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2026-01-16 00:16 UTCPublished CVE record published
2026-06-17 04:18 UTCUpdated Record last modified

zesle zeslecp UPGRADE

Affected: <= 3.1.9

Fixed in: newer than 3.1.9

Safe to downgrade to: no unaffected older release

1. Check installed version

apt-cache policy zeslecp || rpm -q zeslecp || zeslecp --version

2. UPGRADE to newer than 3.1.9 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade zeslecp

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade zeslecp

Note

Distros often backport fixes without changing the version number. Confirm with the distro advisory or changelog.

Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.

Quick answers

How do I fix CVE-2021-47794?

zeslecp: upgrade to newer than 3.1.9. Exact commands for each OS are on this page.

Is CVE-2021-47794 being exploited?

CVE-2021-47794 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

What does CVE-2021-47794 affect?

CVE-2021-47794 affects zeslecp. Severity is high (CVSS 8.8). ZesleCP 3.1.9 contains an authenticated remote code execution vulnerability that allows attackers to create malicious FTP accounts with shell injection payloads. Attackers can exploit the FTP account creation endpoint by injecting a reverse

How urgent is CVE-2021-47794?

Priority 52/100. High severity; Public exploit reference

References

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