VULNERABILITY INTELLIGENCE

CVE-2021-34992

CVSS score8.8 HIGH

EPSS probability4.27%

CISA KEVNot currently listed

Published2021-11-15

Last modified2026-06-17

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

Description

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.

Weakness classification

CWE-502: Deserialization of Untrusted Data

Primary references

zdi-disclosures@trendmicro.com — Patch, Release Notes, Third Party Advisory
zdi-disclosures@trendmicro.com — Third Party Advisory, VDB Entry
af854a3a-2127-422b-91ae-364da2661108 — Patch, Release Notes, Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108 — Third Party Advisory, VDB Entry