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6.5
CVSSv2

CVE-2021-26420

Published: 08/06/2021 Updated: 01/08/2023
CVSS v2 Base Score: 6.5 | Impact Score: 6.4 | Exploitability Score: 8
CVSS v3 Base Score: 7.1 | Impact Score: 5.5 | Exploitability Score: 1.6
VMScore: 578
Vector: AV:N/AC:L/Au:S/C:P/I:P/A:P
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Vulnerability Summary

This vulnerability allows remote malicious users to execute arbitrary code on affected installations of Microsoft SharePoint. Authentication is required to exploit this vulnerability. The specific flaw exists within the System.Workflow.ComponentModel.Compiler.WorkflowCompilerInternal class. This class allows an malicious user to specify a path to an arbitrary workflow definition file. An attacker can leverage this vulnerability to execute code in the context of the web service account.

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microsoft sharepoint foundation 2013

microsoft sharepoint enterprise server 2016

microsoft sharepoint server 2019

References

NVD-CWE-noinfohttps://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2021-26420https://www.zerodayinitiative.com/advisories/ZDI-21-755/https://nvd.nist.govhttps://www.zerodayinitiative.com/advisories/ZDI-21-755/
CVSSv2
CVSSv2
CVSSv3
VMScore
Recommendations:
CVE-2024-34377CVE-2024-20859CVE-2023-49606injectarbitrary CVE-2024-33788CVE-2024-30973IDORCVE-2024-33907
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