CVE-2026-82819

Universal Naming Convention (UNC) Path Injection in Cerberus FTP Server

State: Published
Severity: 7.1 High
Published: Oct 21, 2026
Updated: Oct 30, 2026
Reserved: Aug 31, 2026

Description

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.

Scores

CVSS	Score	Vector	Source
4.0	7.1 High	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	NCSC-FI

Weaknesses

CWE-40 Path traversal: '\\UNC\share\name\' (windows UNC share)

Affected Products

Product	Versions
Cerberus FTP ServerCerberus	before 2026.3.0Affected

References

https://www.cerberusftp.com/releasenotes/release-notes
https://labs.reversec.com/advisories/2026/09/universal-naming-convention-unc-path-injection-in-cerberus-ftp-serverthird-party-advisory

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