CVE-2021-23758

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    CVE-2021-23758

    Published: 3 Dec 2021Last Modified: 28 Aug 2026

    Summary:

    Details: All versions of package ajaxpro.2 are vulnerable to Deserialization of Untrusted Data due to the possibility of deserialization of arbitrary .NET classes, which can be abused to gain remote code execution.

    References: https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2021-23758, https://snyk.io/vuln/SNYK-DOTNET-AJAXPRO2-1925971, https://github.com/michaelschwarz/Ajax.NET-Professional/commit/b0e63be5f0bb20dfce507cb8a1a9568f6e73de57, http://packetstormsecurity.com/files/175677/AjaxPro-Deserialization-Remote-Code-Execution.html, https://blog.talosintelligence.com/uat-10147-chinese-speaking-adversary-integrates-agentic-ai-into-post-compromise-operations/

    Affected packages

    Package

    Name:

    Purl:

    Affected ranges

    Type: GIT

    Events:

    Introduced- 0
    Fixed -5955f9eace7bfe3ecba7f27778c4d0b56eb06287

    Affected versions

    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
    CVE-2021-23758 | CVE-DB