CVE-2022-21987
Published: 09 February 2022
Summary
CVE-2022-21987 is a high-severity an unspecified weakness vulnerability in Microsoft Sharepoint Server. Its CVSS base score is 8.0 (High).
Operationally, ranked in the top 7.6% of CVEs by exploit likelihood; it is not currently listed in the CISA KEV catalog.
Deeper analysis
Microsoft SharePoint Server is affected by CVE-2022-21987, a spoofing vulnerability disclosed on February 9, 2022. The flaw carries a CVSS 3.1 base score of 8.0 with the vector AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:H, indicating network-reachable impact on confidentiality, integrity, and availability when low-privileged access and user interaction are present.
An attacker with low privileges can exploit the issue over the network to spoof content or actions, resulting in high-severity effects on the targeted SharePoint deployment once user interaction occurs.
Microsoft security advisories published at https://msrc.microsoft.com/update-guide/vulnerability/CVE-2022-21987 describe available updates and mitigation steps for the affected SharePoint Server versions.
The associated EPSS score shows a current value of 0.0817 against a recorded peak of 0.0909, reflecting limited movement rather than a pronounced post-disclosure increase.
EU & UK References
- 🇪🇺 ENISA EUVD: EUVD-2022-27141
Vulnerability details
Microsoft SharePoint Server Spoofing Vulnerability
- CWE(s)
Related Threats
No named actor attribution yet. ATT&CK technique mapping in progress for this CVE.
Affected Assets
Mitigating Controls
No mitigating controls mapped yet. The per-CVE control annotator has not reached this CVE.