CVE-2026-58127

Katalog CVE

CVSS 9.8 · Critical EPSS 1,9%

Kerentanan Missing Authentication for Critical Function pada hyland pacsgear. Skor CVSS 3.1 9.8 (Critical) menurut vulncheck.com.

Deskripsi (NVD)

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.

Rincian

Terbit di NVD

1 Juli 2026

Terakhir diubah

9 Juli 2026

Status NVD

Analyzed

CVSS 3.1

9.8 (Critical), sumber vulncheck.com
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H · uraikan di kalkulator

Jenis kelemahan (CWE)

CWE-306: Missing Authentication for Critical Function
CWE-502: Deserialization of Untrusted Data

EPSS (30 hari)

1,9% peluang dieksploitasi; lebih tinggi dari 78,9% CVE lain

Produk dan versi terdampak

> Data dari konfigurasi CPE di NVD.

Referensi dan perbaikan

• https://gist.github.com/VAMorales/dc679ecab30b7045fa07bf3249a034d8 exploit · advisory pihak ketiga
• https://www.vulncheck.com/advisories/pacsgear-mediawriter-unauthenticated-rce-via-net-remoting-tcp-service advisory pihak ketiga · vdb entry
• https://www.hyland.com/en/solutions/products/pacsgear product