What’s Vulnerable › Vulnerabilities

CVE-2019-18211

• Severity: high (CVSS 8.8 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 2.6% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2019-12-23 · updated 2026-06-17
• Weakness: CWE-502

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.

Affected products

• Orckestra C1-CMS-Foundation: through 6.6

References

• https://github.com/Orckestra/C1-CMS-Foundation/commits/dev
• https://github.com/Orckestra/C1-CMS-Foundation/commits/dev

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