---
id: "CVE-2026-82819"
kind: "vulnerability"
aliases: ["CVE-2026-82819"]
title: "Cerberus FTP Server: UNC path injection leaks service account NTLM hash"
severity: "high"
cvss: 7.1
epss: 0.00457
exploited: false
status: "open"
category: "other"
products: []
ecosystems: []
tags: ["cerberus-ftp", "other", "self-hosted", "windows"]
not_affected_if: ["auth-required", "cerberus-not-deployed"]
published_at: "2026-10-21T05:16:43+00:00"
first_seen_at: "2026-10-23T21:57:28+00:00"
updated_at: "2026-10-25T03:32:01+00:00"
sources: [{"source": "nvd", "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-82819", "first_seen_at": "2026-10-23T21:57:28+00:00"}, {"source": "epss", "url": "https://api.first.org/data/v1/epss?cve=CVE-2026-82819", "first_seen_at": "2026-10-24T13:15:54+00:00"}]
---

# Cerberus FTP Server: UNC path injection leaks service account NTLM hash

An authenticated user of Cerberus FTP Server can supply a malicious SMB share path through a manipulated parameter. The server then authenticates to that share, leaking the Cerberus service account's Net-NTLMv2 hash that an attacker can try to crack or relay.

_Summary, check and fix written by a model from the sources; labelled as such._

## How to check

- Check the installed Cerberus FTP Server version against `2026.3.0` in the admin console or the product's About dialog
- unknown whether the sources name a specific config file or setting to inspect

## Fix

- Upgrade Cerberus FTP Server to `2026.3.0` or later
- After patching, rotate the Cerberus service account password if the server was exposed before the upgrade (inferred from the leak; sources do not say)

## Timeline

- 2026-10-23T21:57:28+00:00 nvd https://nvd.nist.gov/vuln/detail/CVE-2026-82819
- 2026-10-24T13:15:54+00:00 epss https://api.first.org/data/v1/epss?cve=CVE-2026-82819

## From the sources

A vulnerability in Cerberus FTP Server allows an authenticated remote attacker to perform UNC path injection via a manipulated parameter. By supplying a malicious SMB share path, an attacker can execute authentication coercion against the underlying server, resulting in the leakage of the Cerberus service account's Net-NTLMv2 hash. This issue has been resolved in Cerberus FTP Server: 2026.3.0.

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_Free to read at a human pace. An API with keys and an MCP server are in preparation; early access: hello@infrastack.ai_