CVE-2019-18211

HIGH

Orckestra C1 Cms < 6.6 - Insecure Deserialization

Title source: rule

Description

An issue was discovered in Orckestra C1 CMS through 6.6. The EntityTokenSerializer class in Composite.dll is prone to unvalidated deserialization of wrapped BinaryFormatter payloads, leading to arbitrary remote code execution for any low-privilege user.

References (1)

[Patch] https://github.com/Orckestra/C1-CMS-Foundation/commits/dev

Scores

CVSS v3 8.8

EPSS 0.0281

EPSS Percentile 86.0%

Attack Vector NETWORK

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Classification

CWE

CWE-502

Status published

Affected Products (1)

orckestra/c1_cms < 6.6

Timeline

Published Dec 23, 2019

Tracked Since Feb 18, 2026