Signal is active with 1 mentions in latest observed window
Recommended action window: Monitor and triage in normal cycle
NVD description
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 MarshalByRefObject object unmarshalling technique and implementing .NET WebClient class methods, an unauthenticated remote attacker can read and write arbitrary files on the host filesystem. The ObjectURIs are identical across all installations by default. Chaining the arbitrary file write primitive with DLL hijacking opportunities in the MediaWriter service (which runs as NT Authority\\SYSTEM and loads missing DLLs such as CRYPTBASE.DLL from the application directory) enables unauthenticated remote code execution as SYSTEM upon service restart.
Priority
LOW
Exploitation
NONE
PoC
YES
Patch
AVAILABLE
Momentum
STABLE
If you run products in this scope, you should treat this CVE as relevant to your environment.
| Date | Total | Labels |
|---|
| 2026-07-01 | 1 | Patch1 |
| 2026-07-02 | 1 | Disclosure1 |
🚨 CVE-2026-58127 — CVSS 9.8/10 ██████████ PACSgear MediaWriter 5.2.1 exposes a .NET Remoting TCP service on port 9000 via PacsgearMediaServerEngine.dll,... Severity: CRITICAL Patch now. #cybersecurity #CVE https://t.co/xurMwnUZcH
Post summary
CVE-2026-58127 is a critical .NET Remoting vulnerability in Pacsgear MediaWriter 5.2.1; a patch is available.
CVE-2026-58127 Hyland PACSgear MediaWriter Unauthenticated remoting could allow file read/write and remote code execution as SYSTEM Full analysis: https://github.com/alan-turing-institute/cyber-threat-observatory/blob/main/reports/2026-07-01/TIER_2_CVE-2026-58127.md #CyberSecurity #HealthcareCybersecurity #VulnerabilityManagement
Post summary
CVE-2026-58127 is an unauthenticated remoting vulnerability in Hyland PACSgear MediaWriter that allows file read/write and remote code execution as SYSTEM; no PoC, exploit, or active exploitation is reported.
1 of 1 entries
| Part | Vendor | Product | Version | Target SW | Target HW |
|---|---|---|---|---|---|
| App | hyland | pacsgear | - | - | - |