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    CVE-2021-35240

    A security researcher stored XSS via a Help Server setting. This affects customers using Internet Explorer, because they do not support 'rel=noopener'.

    Published:Aug 31, 2021
    Last Modified:Nov 21, 2024
    EPS:Aug 31, 2021
    EPSS Score:0.00249
    CVSS Score:6.5

    Affected Products

    Vendor
    Microsoft
    Product
    Internet Explorer
    Vendor
    Solarwinds
    Product
    Orion Platform

    Exploits

    No exploit reference

    Related CVEs

    CVE-2025-59295 (CVSS 8.8) — Heap-based buffer overflow in Internet Explorer allows an unauthorized attacker to execute code over a network…
    CVE-2021-26419 (CVSS 7.5) — Scripting Engine Memory Corruption Vulnerability…
    CVE-2021-27085 (CVSS 8.8) — Internet Explorer Remote Code Execution Vulnerability…
    CVE-2021-26411 (CVSS 8.8) — Internet Explorer Memory Corruption Vulnerability…
    CVE-2020-17058 (CVSS 7.5) — Microsoft Browser Memory Corruption Vulnerability…
    CVE-2020-17053 (CVSS 7.5) — Internet Explorer Memory Corruption Vulnerability…
    CVE-2020-17052 (CVSS 7.5) — Scripting Engine Memory Corruption Vulnerability…
    CVE-2020-1506 (CVSS 6.1) — <p>An elevation of privilege vulnerability exists in the way that the Wininit.dll handles objects in memory. A…
    CVE-2020-1012 (CVSS 8.8) — <p>An elevation of privilege vulnerability exists in the way that the Wininit.dll handles objects in memory. A…
    CVE-2020-0878 (CVSS 4.2) — <p>A remote code execution vulnerability exists in the way that Microsoft browsers access objects in memory. T…

    References

    https://documentation.solarwinds.com/en/success_center/orionplatform/content/core-secure-configuration.htm
    https://support.solarwinds.com/SuccessCenter/s/article/Mitigate-the-Stored-XSS-via-Help-Server-setting-CVE-2021-35240?language=en_US
    https://support.solarwinds.com/SuccessCenter/s/article/Orion-Platform-2020-2-6-Hotfix-1?language=en_US
    https://www.solarwinds.com/trust-center/security-advisories/cve-2021-35240
    https://documentation.solarwinds.com/en/success_center/orionplatform/content/core-secure-configuration.htm
    https://support.solarwinds.com/SuccessCenter/s/article/Mitigate-the-Stored-XSS-via-Help-Server-setting-CVE-2021-35240?language=en_US
    https://support.solarwinds.com/SuccessCenter/s/article/Orion-Platform-2020-2-6-Hotfix-1?language=en_US
    https://www.solarwinds.com/trust-center/security-advisories/cve-2021-35240

    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