# VestaCP Debian Installer Malicious Backdoor Supply Chain Compromise

CVE record · `CVE-2018-25117`

- **Identifiers:** `CVE-2018-25117`
- **State:** Confirmed
- **Severity:** CVSS 9.3 Critical
- **Critical:** Yes: CVSS 9+
- **CNA:** VulnCheck
- **Weakness (CWE):** [CWE-506](https://cwe.mitre.org/data/definitions/506.html)
- **Tags:** [CWE-506](https://agentprime.io/advisories/tag/cwe-506.md)
- **Technologies:** [Vesta Control Panel (CP)](https://agentprime.io/advisories/technology/vesta-control-panel-cp.md)
- **Published:** 15 Oct 2025
- **Updated:** 23 Jun 2026
- **Reviewed by a person:** No

Published by the CVE Program (CNA: VulnCheck) at 15 Oct 2025, 01:23 UTC. agentprime has not analysed this yet, so whether it affects any app is not known. This CVE names a vendor and product rather than a package, so the lockfile check doesn’t match it.

## Critical

Critical, because:

- CVSS score 9.3: 9.0 or more.

How we decide what’s critical: <https://agentprime.io/advisories/critical.md>

## Affected products, as the CNA wrote them

- Vendor: Vesta. Product: Control Panel (CP).
  - affected: `a3f0fa1501d424477786e3e7150bb05c0b99518f to before ee03eff016e03cb76fac7ae3a0f9d1ef0f8ee35b` (git)
  - Other versions: unaffected

## Not analysed yet

We haven’t published our own analysis of this CVE. If a person reviews it, this page will say what’s affected and what has to be true for it to matter.

## Severity and exploitation

- 9.3 Critical, CVSS 4.0: `CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:H/VI:H/VA:N/SC:H/SI:H/SA:N`, from CNA (VulnCheck)

- **CISA KEV:** Not listed.
- **EPSS:** 0.0044, the 38th percentile, on 6 Nov 2026: FIRST’s estimate of the chance of exploitation in the next 30 days.

## Timeline

This record came from the full history of the CVE Program, published 15 Oct 2025. New records show when each source confirmed them.

## Sources

- [CVE List: CVE-2018-25117](https://www.cve.org/CVERecord?id=CVE-2018-25117)
- [NVD: CVE-2018-25117](https://nvd.nist.gov/vuln/detail/CVE-2018-25117)

### References from the CNA

- <https://www.welivesecurity.com/2018/10/18/new-linux-chachaddos-malware-distributed-servers-vestacp-installed/> (technical-description)
- <https://github.com/outroll/vesta/commit/ee03eff016e03cb76fac7ae3a0f9d1ef0f8ee35b#diff-df8da0c91e9086454c60cd468849630dL1270> (patch)
- <https://github.com/outroll/vesta/commit/a3f0fa1501d424477786e3e7150bb05c0b99518f#diff-df8da0c91e9086454c60cd468849630dR1256> (patch)
- <https://forum.vestacp.com/viewtopic.php?f=10&t=17641&p=73282> (issue-tracking)
- <https://forum.vestacp.com/viewtopic.php?f=10&t=17641&start=180#p73907> (vendor-advisory, patch)
- <https://vestacp.com/> (product)
- <https://github.com/outroll/vesta> (product)
- <https://www.vulncheck.com/advisories/vestacp-debian-installer-malicious-backdoor-supply-chain-compromise> (third-party-advisory)

Facts on this page come from the CVE List as the CNA published them, with CVSS from the sources named above, CISA KEV and FIRST EPSS. Vendors, products and versions are shown as the CNA wrote them. We don’t reproduce the CVE’s description.

## Check whether this affects you

This CVE names a vendor and product rather than a package, so the lockfile check doesn’t match it. Compare the affected versions above with what you run.

- With the agentprime MCP server (<https://api.agentprime.io/mcp>), `get_advisory` returns this record and `search_advisories` finds related ones. Setup: <https://agentprime.io/mcp.md>
- As JSON: <https://api.agentprime.io/v1/advisories/CVE-2018-25117>
- Everything that needs attention now: <https://agentprime.io/advisories/critical.md>

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The web page: <https://agentprime.io/advisories/CVE-2018-25117/>. Everything for agents: <https://agentprime.io/llms.txt>.