Unauthenticated Remote Code Execution in PACSgear PACS Scan
CVE-2026-58126

9.3CRITICAL

Key Information:

Vendor

Hyland

Status
Pacsgear Pacs Scan
Vendor
CVE Published:
1 July 2026

Badges

👾 Exploit Exists🟡 Public PoC

What is CVE-2026-58126?

PACSgear PACS Scan 5.2.1 is susceptible to an unauthenticated remote code execution vulnerability due to an exposed .NET Remoting TCP service operating on port 22222. This allows attackers to execute unauthorized commands and manipulate files remotely through PGImageExchQueue.exe without any authentication. By exploiting this vulnerability, attackers can chain arbitrary file writes with DLL hijacking techniques targeting PGImageExchangeQueueSvc.exe, which loads essential DLLs such as CRYPTSP.DLL from the application directory. Upon service restart, this can result in remote code execution at the system level, compromising system integrity and security.

Affected Version(s)

PACSgear PACS Scan 5.2.1

Exploit Proof of Concept (PoC)

PoC code is written by security researchers to demonstrate the vulnerability can be exploited. PoC code is also a key component for weaponization which could lead to ransomware.

CVE-2026-58126 - Proof of Concept

References

https://gist.github.com/VAMorales/6dc232729cdd517fa30d581...
technical-descriptionexploit
https://www.hyland.com/en/solutions/products/pacsgear
product
https://www.vulncheck.com/advisories/pacsgear-pacs-scan-u...
third-party-advisory

CVSS V4

Score:
9.3
Severity:
CRITICAL
Confidentiality:
High
Integrity:
High
Availability:
High
Attack Vector:
Network
Attack Complexity:
Low
Attack Required:
None
Privileges Required:
Undefined
User Interaction:
None

Timeline

  • 🟡

    Public PoC available

  • 👾

    Exploit known to exist

  • Vulnerability published

  • Vulnerability Reserved

Credit

Victor A. Morales, Senior Pentester Team Leader, GM Sectec, Corp
Jan A. Rodriguez, Pentester, GM Sectec, Corp.
.