CVE-2021-42237CISA KEVEPSS p99.9%

CVE-2021-42237Sitecore XP Remote Command Execution Vulnerability

Sitecore / XP

Description

Sitcore XP contains an insecure deserialization vulnerability which can allow for remote code execution.

Scoring

EPSS99.21% probability of exploitation · percentile 99.9% · 2026-06-15T12:03:41Z

CISA KEV entry

Added to KEV: 2022-03-25

(incoming)1

TypeTargetConfidenceTier
KEVEntrySitecore XP Remote Command Execution Vulnerabilitykev-cve-2021-422370%live

Related by meaning· 6

Nearest entities by semantic similarity across the cs-graph corpus.

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CVE-2025-53691
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Sitecore CMS and Experience Platform (XP) Deserialization Vulnerability
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Microsoft .NET Framework, SharePoint, and Visual Studio Remote Code Execution Vulnerability
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CVE-2025-34511
Sourced from NVD + CISA KEV + FIRST.org EPSS. Curated for EU compliance use cases by Adam Lundqvist, Founder at SQUR.