Auth bypass in Hyland Pacsgear
CVE-2026-58126
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.
Vulnerability class: Broken Authentication
Published · last modified .
CVSS v3 metric
CVSS v3 base score 9.8 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.
EPSS exploit prediction
EPSS: 0.018 (78.2th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 78th percentile — 78.2% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.018 · newest: 0.018 · change: 0.000
Affected products
- Hyland Pacsgear
- Hyland Pacsgear Pacs Scan — versions 5.2.1
Weakness classification (CWE)
References
- gist.github.com/VAMorales/6dc232729cdd517fa30d581fbcd98d8f (Exploit, technical-description, Third Party Advisory, exploit)
- www.hyland.com/en/solutions/products/pacsgear (Product, product)
- www.vulncheck.com/advisories/pacsgear-pacs-scan-unauthenticated-rce-via-net-rem… (VDB Entry, Third Party Advisory, third-party-advisory)
Frequently asked questions
- What is CVE-2026-58126?
- CVE-2026-58126 is a critical-severity vulnerability in Hyland Pacsgear, classified under Missing Authentication for Critical Function. CVSS score: 9.8/10. Published 2026-07-01.
- How severe is CVE-2026-58126?
- Critical severity. CVSS v3 base score is 9.8 out of 10.