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CVE-2021-42237: Sitecore XP Remote Command Execution Vulnerability

criticalknown exploitedpublic exploitCVE-2021-42237
Actively exploited. At least one CVE in this advisory is listed in the CISA Known Exploited Vulnerabilities catalog — exploitation has been observed in the wild. Treat remediation as urgent.
Sitcore XP contains an insecure deserialization vulnerability which can allow for remote code execution.

CSIRTS triage

vendor: Sitecoreproduct: Sitecore XPRemote code executionUnsafe deserialization
What
Sitecore XP contains an insecure deserialization vulnerability which can allow for remote code execution.
Who is affected
Deployments of Sitecore XP are affected.
Urgency
Remediation is critical as the vulnerability is actively exploited and severe.
Action
Update to the latest version of Sitecore XP.

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Details

Source
CISA Known Exploited Vulnerabilities (US · database · site)
Severity
critical
Published
2022-03-25
Exploitation
Observed in the wild (CISA KEV)

Original advisory: https://nvd.nist.gov/vuln/detail/CVE-2021-42237

Exploitation outlook

EPSS (FIRST.org) estimates each CVE’s probability of exploitation in the next 30 days — here is the CSIRTS.com read on those numbers.

Referenced CVEs

CVECSIRTS overviewExternal
CVE-2021-42237coverage & exploitation statusNVD · CVE.org

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