by Kastro
Paper/Archive/CVE-2026-58126

CVE-2026-58126

Hyland PACSgear PACS Scan — PACSgear PACS Scan 5.2.1 Unauthenticated RCE via .NET Remoting TCP Service

EPSS 2%public exploitCVSS 9.8
critical.is priorityof 100
55
CVSS 9.8 (CNA)9.8 / 10 × 3029.4Not in CISA KEV+300.0EPSS percentile 79.0.790 × 2015.8Exploit: SSVC poc+1010.0SSVC exploitation: poc+100.0
Description · from the CVE record

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.

Affected

ProductAffectedFixed inSource
PACSgear PACS Scan5.2.1–CNA

Scores by source

VulnCheck (CNA)9.8CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
VulnCheck (CNA)9.3CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
CISA ADPSSVCExploitation: poc · Automatable: yes · Technical impact: total

References

exploitgist.github.com/VAMorales/6dc232729cdd517fa30d581fbcd98d8frefhyland.com/en/solutions/products/pacsgearwriteupvulncheck.com/advisories/pacsgear-pacs-scan-unauthenticated-rce-via-net-remoting-tcp-service