CVE-2026-33823

FAUCET Score

Improper authorization in Microsoft Teams allows an authorized attacker to disclose information over a network.

First published: May 7, 2026Last modified: May 12, 2026

Impacted Technologies

Vendor	Product	Version(s)	CPE
		Range not provided by sourceCPE matchmatch criteria	cpe:2.3:a:microsoft:teams:-:::::::*

CVSS Data

CVSS version used by this source: 3.1

9.6CRITICAL

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:N

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

LOW

User Interaction

NONE

Scope

CHANGED

Confidentiality Impact

HIGH

Integrity Impact

HIGH

Availability Impact

NONE

Exploitability Score

3.1

Impact Score

5.8

CvssVersion

3.1

Exploit Intelligence

EPSS Score

0.72%

Probability of exploitation in next 30 days

EPSS Percentile

50.1%

Percentile rank of EPSS score among Peer Group

As of 2026-07-27

Model: v2026.06.15

This CVE's current EPSS score of 0.0072 is in the 57th percentile among its peer group of 1,124 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 1.0 Bluesky, 0.5 Mastodon, and 1.6 GitHub mentions.

Media Mentions

The average CVE in this peer group has 0.3 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Vendor Patches (1)

microsoftvendor investigatingvia nvd_reference

View patch

Vendor Advisories (1)

microsoft2026-May/CVE-2026-33823Critical

Microsoft Team Events Portal Information Disclosure Vulnerability

May 7, 2026

References

msrc.microsoft.com / update-guide/vulnerability/CVE-2026-33823

Vendor Advisory