CVE-2026-33823
Microsoft Team Events Portal Information Disclosure Vulnerability
Improper authorization in Microsoft Teams allows an authorized attacker to disclose information over a network.
Attack profile
How easy it is to exploit
- Attack vector
- Network
- Complexity
- Low
- Privileges needed
- Low
- User interaction
- None
What an attacker can affect
- Confidentiality
- High
- Integrity
- High
- Availability
- None
Exploit likelihood
What each source reports
CVE List Score used
Microsoft Team Events Portal Information Disclosure Vulnerability
Improper authorization in Microsoft Teams allows an authorized attacker to disclose information over a network.
- Record
CVE-2026-33823- CVSS 3.1
- 9.6 Critical
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:N/E:U/RL:O/RC:C - Weakness
- CWE-285
- Updated
- 2026-11-02
EUVDEUVD-2026-28450
Improper authorization in Microsoft Teams allows an authorized attacker to disclose information over a network.
- Record
EUVD-2026-28450- CVSS 3.1
- 9.6 Critical
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:N/E:U/RL:O/RC:C - Updated
- 2026-11-02
GitHub AdvisoriesGHSA-w6p3-2c62-jm2g
Improper authorization in Microsoft Teams allows an authorized attacker to disclose information...
Improper authorization in Microsoft Teams allows an authorized attacker to disclose information over a network.
- Record
GHSA-w6p3-2c62-jm2g- CVSS 3.1
- 9.6 Critical
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:N - Weakness
- CWE-285
- Updated
- 2026-11-02
NVD
Improper authorization in Microsoft Teams allows an authorized attacker to disclose information over a network.
- Record
CVE-2026-33823- CVSS 3.1
- 9.6 Critical
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:N - CVSS 3.1
- 6.5 Medium
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N - Weakness
- CWE-285
- Updated
- 2026-11-02
Affected products
History
| Recorded | Changed | Sources |
|---|---|---|
| first indexed | CVE List, EUVD, GitHub Advisories, NVD |
Dates are when Every CVE recorded each change. Upstream dates may differ.
In short
CVE-2026-33823 is a critical vulnerability (CVSS 9.6) in Microsoft Teams, published May 7, 2026. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 0.72%, the 54th percentile. No source names a fixed version.