CVE-2021-34992

moderate-risk
Published 2021-11-15

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.

Do I need to act?

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21.1% chance of exploitation in next 30 days
EPSS score — higher than 79% of all CVEs
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Not on CISA KEV list
No confirmed active exploitation reported to CISA
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Patch status unknown
Check vendor advisories for fix availability and mitigation guidance
8
CVSS 8.8/10 High
NETWORK / LOW complexity

Affected Products (1)

C1 Cms

Affected Vendors

Orckestra

References (4)

Patch https://github.com/Orckestra/C1-CMS-Foundation/releases/tag/v6.11
Third Party Advisory https://www.zerodayinitiative.com/advisories/ZDI-21-1304/
Patch https://github.com/Orckestra/C1-CMS-Foundation/releases/tag/v6.11
Third Party Advisory https://www.zerodayinitiative.com/advisories/ZDI-21-1304/
49
/ 100
moderate-risk
Severity 30/34 · Critical
Exploitability 14/34 · Moderate
Exposure 5/34 · Minimal