CVE-2026-58126 CRITICAL

CVE-2026-58126: PACSgear PACS Scan 5.2.1 Unauthenticated RCE via .NET Remoting TCP Service

Vendor Hyland
Product PACSgear PACS Scan
Weakness CWE-306 · Missing auth
Published July 1, 2026
Last update July 1, 2026

CVSS base score

9.3/10
Attack vector Network
Attack complexity Low
Privileges required None
User interaction None
Confidentiality
Integrity

CVSS vector

CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N

What the vulnerability does

01Description

PACSgear PACS Scan 5.2.1 contains an unauthenticated remote code execution vulnerability that allows remote attackers to read and write arbitrary files by exploiting an exposed .NET Remoting TCP service on port 22222 via PGImageExchQueue.exe without any authentication requirement. Attackers can chain the arbitrary file write primitive with DLL hijacking in PGImageExchangeQueueSvc.exe, which loads missing DLLs such as CRYPTSP.DLL from the application directory, to achieve remote code execution as NT Authority\SYSTEM upon service restart.

Key dates

02Disclosure timeline

July 1, 2026 CVE published