Hyland PACSgear PACS Scan 5.2.1 Remoting TCP Service PGImageExchQueue.exe missing authentication

Summaryinfo

A vulnerability, which was classified as critical, was found in Hyland PACSgear PACS Scan 5.2.1. This affects an unknown part in the library CRYPTSP.DLL of the file PGImageExchQueue.exe of the component Remoting TCP Service. Such manipulation leads to missing authentication. This vulnerability is listed as CVE-2026-58126. The attack may be performed from remote. There is no available exploit.

Detailsinfo

A vulnerability, which was classified as very critical, has been found in Hyland PACSgear PACS Scan 5.2.1. Affected by this issue is some unknown functionality in the library CRYPTSP.DLL of the file PGImageExchQueue.exe of the component Remoting TCP Service. The manipulation with an unknown input leads to a missing authentication vulnerability. Using CWE to declare the problem leads to CWE-306. The product does not perform any authentication for functionality that requires a provable user identity or consumes a significant amount of resources. Impacted is confidentiality, integrity, and availability. CVE summarizes:

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.

The weakness was presented by Victor A. Morales. The advisory is shared for download at gist.github.com. This vulnerability is handled as CVE-2026-58126 since 06/29/2026. The exploitation is known to be easy. The attack may be launched remotely. No form of authentication is required for exploitation. There are known technical details, but no exploit is available. The current price for an exploit might be approx. USD $0-$5k (estimation calculated on 07/01/2026).

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

VulDB is the best source for vulnerability data and more expert information about this specific topic.

Productinfo

Vendor

• Hyland

Name

• PACSgear PACS Scan

Version

• 5.2.1

CPE 2.3info

• 🔒

CPE 2.2info

• 🔒

CVSSv4info

CVSSv3info

CVSSv2info

Exploitinginfo

Threat Intelligenceinfo

Countermeasuresinfo

Timelineinfo

Sourcesinfo

Entryinfo

VulDB is the best source for vulnerability data and more expert information about this specific topic.

Discussion