How severe is CVE-2022-39256?

CVE-2022-39256 has a CVSS 3.x base score of 9.0, rated critical severity. It is exploitable over network with low attack complexity, requires low privileges and user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2022-39256 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (65th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2022-39256?

CVE-2022-39256 affects Orckestra C1 Cms. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2022-39256?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.

When was CVE-2022-39256 published?

CVE-2022-39256 was published on 2022-09-27 and last updated on 2026-06-17.

CVE-2022-39256

CVE-2022-39256 is a critical-severity vulnerability in Orckestra C1 Cms with a CVSS 3.x base score of 9.0. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-502.

Key facts

Severity: Critical (CVSS 3.x base score 9.0)
EPSS exploit prediction: 1% (65th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-502
Affected product: Orckestra C1 Cms
Published: 2022-09-27
Last modified: 2026-06-17

Description

Orckestra C1 CMS is a .NET based Web Content Management System. A vulnerability in versions prior to 6.13 allows remote attackers to execute arbitrary code on affected installations of Orckestra C1 CMS. Authentication is required to exploit this vulnerability. The authenticated user may perform the actions unknowingly by visiting a specially crafted site. This issue is patched in C1 CMS v6.13. There are no known workarounds.

Frequently asked questions

What is CVE-2022-39256?: Orckestra C1 CMS is a .NET based Web Content Management System. A vulnerability in versions prior to 6.13 allows remote attackers to execute arbitrary code on affected installations of Orckestra C1 CMS. Authentication is required to exploit this vulnerability. The authenticated user may perform the actions unknowingly by visiting a specially crafted site. This issue is patched in C1 CMS v6.13. There are no known workarounds.
How severe is CVE-2022-39256?: CVE-2022-39256 has a CVSS 3.x base score of 9.0, rated critical severity. It is exploitable over network with low attack complexity, requires low privileges and user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2022-39256 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (65th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2022-39256?: CVE-2022-39256 affects Orckestra C1 Cms. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2022-39256?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.
When was CVE-2022-39256 published?: CVE-2022-39256 was published on 2022-09-27 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:orckestra:c1_cms:*:*:*:*:*:*:*:*

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