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    CVE-2021-42237

    Sitecore XP 7.5 Initial Release to Sitecore XP 8.2 Update-7 is vulnerable to an insecure deserialization attack where it is possible to achieve remote command execution on the machine. No authentication or special configuration is required to exploit this vulnerability.

    Published:Nov 5, 2021
    Last Modified:Nov 10, 2025
    EPS:Nov 5, 2021
    EPSS Score:0.94309
    CVSS Score:9.8

    CISA Notification

    Description

    Sitecore XP 7.5 Initial Release to Sitecore XP 8.2 Update-7 is vulnerable to an insecure deserialization attack where it is possible to achieve remote command execution on the machine. No authentication or special configuration is required to exploit this vulnerability.

    Required Action:

    Apply updates per vendor instructions.

    Notes:

    No extra notes provided.

    Due Date
    Apr 15, 2022
    1610 days ago
    Alert Date
    Mar 25, 2022
    1631 days ago

    Affected Products

    Vendor
    Sitecore
    Product
    Experience Platform

    Exploits

    https://blog.assetnote.io/2021/11/02/sitecore-rce/https://blog.assetnote.io/2021/11/02/sitecore-rce/https://github.com/crankyyash/SiteCore-RCE-Detectionhttps://github.com/ItsIgnacioPortal/CVE-2021-42237https://github.com/vesperp/CVE-2021-42237-SiteCore-XP

    Common Attack Pattern Enumeration and Classification (CAPEC)

    CAPEC-586 Object Injection

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    Common Vulnerability Scoring System

    Attack Vector
    Network
    Adjacent
    Local
    Physical
    Privileges Required
    None
    Low
    High
    User Interaction
    None
    Required
    Scope
    Unchanged
    Changed
    Confidentiality
    None
    Low
    High
    Integrity
    None
    Low
    High
    Availability
    None
    Low
    High