Auth bypass in Hyland Pacsgear Mediawriter
CVE-2026-58127
PACSgear MediaWriter 5.2.1 exposes a .NET Remoting TCP service on port 9000 via PacsgearMediaServerEngine.dll, registered with ObjectURIs RemoteObj and UIRemoteObj, without any authentication requirement. By exploiting the MarshalByRefObje…
Vulnerability class: Broken Authentication
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.
Affected products
- Hyland Pacsgear Mediawriter — versions 5.2.1
Weakness classification (CWE)
References
- disclosure@vulncheck.com (technical-description, exploit)
- disclosure@vulncheck.com (product)
- disclosure@vulncheck.com (third-party-advisory)
Frequently asked questions
- What is CVE-2026-58127?
- CVE-2026-58127 is a critical-severity vulnerability in Hyland Pacsgear Mediawriter, classified under Missing Authentication for Critical Function. CVSS score: 9.8/10. Published 2026-07-01.
- How severe is CVE-2026-58127?
- Critical severity. CVSS v3 base score is 9.8 out of 10.