CVE-2022-21965
Microsoft Teams Denial of Service Vulnerability
7.5 High
Microsoft Teams Denial of Service Vulnerability
Attack profile
How easy it is to exploit
- Attack vector
- Network
- Complexity
- Low
- Privileges needed
- None
- User interaction
- None
What an attacker can affect
- Confidentiality
- None
- Integrity
- None
- Availability
- High
Exploit likelihood
2.96%Up 2.1 points since Feb 10, 2022
What each source reports
CVE List Score used
Microsoft Teams Denial of Service Vulnerability
Microsoft Teams Denial of Service Vulnerability
- Record
CVE-2022-21965- CVSS 3.1
- 7.5 High
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H/E:U/RL:O/RC:C - Updated
- 2026-11-02
EUVDEUVD-2022-27120
Microsoft Teams Denial of Service Vulnerability
- Record
EUVD-2022-27120- CVSS 3.1
- 7.5 High
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H/E:U/RL:O/RC:C - Updated
- 2026-11-03
GitHub AdvisoriesGHSA-mrg4-hwp5-c6hc
Microsoft Teams Denial of Service Vulnerability.
Microsoft Teams Denial of Service Vulnerability.
- Record
GHSA-mrg4-hwp5-c6hc- CVSS 3.1
- 7.5 High
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H - Updated
- 2026-11-02
NVD
Microsoft Teams Denial of Service Vulnerability
- Record
CVE-2022-21965- CVSS 3.1
- 7.5 High
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H - CVSS 2.0
- 5.0 Medium
AV:N/AC:L/Au:N/C:N/I:N/A:P - Updated
- 2026-11-02
Affected products
History
| Recorded | Changed | Sources |
|---|---|---|
| aliases | EUVD | |
| first indexed | CVE List, GitHub Advisories, NVD |
Dates are when Every CVE recorded each change. Upstream dates may differ.
In short
CVE-2022-21965 is a high vulnerability (CVSS 7.5) in Microsoft Teams, published February 9, 2022. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 2.96%, the 87th percentile. No source names a fixed version.