---
id: CVE-2026-82819
title: Universal Naming Convention (UNC) Path Injection in Cerberus FTP Server
summary: >-
  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 th…
severity: high
cvss: 7.1
cvssVector: 'CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N'
cvssSource: cna
cwe:
  - CWE-40
vendor: Cerberus
product: Cerberus FTP Server
affected:
  - ftp_server < 2026.3.0
published: '2026-10-21'
updated: '2026-10-21'
sourceUpdated: '2026-10-21T04:30:40.808Z'
source: CVEORG
sourceUrl: 'https://www.cve.org/CVERecord?id=CVE-2026-82819'
references:
  - url: 'https://www.cerberusftp.com/releasenotes/'
  - url: >-
      https://labs.reversec.com/advisories/2026/09/universal-naming-convention-unc-path-injection-in-cerberus-ftp-server
tags:
  - cve.org
ingestedAt: '2026-10-21T06:42:48.188Z'
---

## Overview

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.

## Affected

- `ftp_server < 2026.3.0`

## Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.