CVE-2022-21965
Published: 09 February 2022
Summary
CVE-2022-21965 is a high-severity an unspecified weakness vulnerability in Microsoft Teams. Its CVSS base score is 7.5 (High).
Operationally, ranked in the top 5.8% of CVEs by exploit likelihood; it is not currently listed in the CISA KEV catalog.
Deeper analysis
CVE-2022-21965 is a denial-of-service vulnerability affecting Microsoft Teams. It received a CVSS 3.1 base score of 7.5 with network attack vector, low complexity, and no required privileges or user interaction, resulting in high impact to availability while leaving confidentiality and integrity unaffected.
An unauthenticated remote attacker can exploit the flaw over the network to disrupt service availability for Microsoft Teams users. The absence of authentication requirements means the attack can originate from any reachable network position without prior access or credentials.
Microsoft Security Response Center advisories at the listed URLs contain official guidance and patch information for the issue. The associated EPSS score has remained flat at 0.1280 with no material increase since disclosure.
EU & UK References
- 🇪🇺 ENISA EUVD: EUVD-2022-27120
Vulnerability details
Microsoft Teams Denial of Service 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.