CVE-2021-34992

This vulnerability allows remote attackers to execute arbitrary code on affected installations of Orckestra C1 CMS 6.10. Authentication is required to exploit this vulnerability. The specific flaw exists within Composite.dll. The issue results from the lack of proper validation of user-supplied data, which can result in deserialization of untrusted data. An attacker can leverage this vulnerability to execute code in the context of the service account. Was ZDI-CAN-14740.

• CWE-502
• CWE-502

• https://github.com/Orckestra/C1-CMS-Foundation/releases/tag/v6.11Patch, Release Notes, Third Party Advisory
• https://www.zerodayinitiative.com/advisories/ZDI-21-1304/Third Party Advisory, VDB Entry
• https://github.com/Orckestra/C1-CMS-Foundation/releases/tag/v6.11Patch, Release Notes, Third Party Advisory
• https://www.zerodayinitiative.com/advisories/ZDI-21-1304/Third Party Advisory, VDB Entry

Published

Nov 15, 2021

Last Modified

Jun 17, 2026

Status

Modified

• How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
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