CVE-2026-21535

⚠️ high

🔍 Scan for this CVE

Improper access control in Microsoft Teams allows an unauthorized attacker to disclose information over a network.

CVSS Score

8.2

High

EPSS Score

0.1

Exploit Probability

Published Date

2026-02-19

First Seen: 2026-02-20

This CVE is High Risk - more severe than 79.7% of all 326,604 vulnerabilities in our database.

#66,460

Top 25% most severe

Severity Percentile

Last Modified 2026-02-20

Source NVD 🔗

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

CWE IDs (Weakness Types)

CWE-284

📦 Affected Products 1

Vendor	Product	Status	Affected Versions
microsoft	teams	Affected	v-

Vendor Advisory

CVE ID	Severity	CVSS	EPSS	Summary	Published
CVE-2026-32185	🔶 medium	5.5	0.1	Files or directories accessible to external parties in Microsoft Teams allows an unauthorized attacker to perform spoofi...	2026-05-12
CVE-2026-33823	⛔ critical	9.6	0.1	Improper authorization in Microsoft Teams allows an authorized attacker to disclose information over a network.	2026-05-07
CVE-2026-26133	⚠️ high	7.1	0.1	AI command injection in M365 Copilot allows an unauthorized attacker to disclose information over a network.	2026-03-16
CVE-2025-53783	⚠️ high	7.5	0.1	Heap-based buffer overflow in Microsoft Teams allows an unauthorized attacker to execute code over a network.	2025-08-12
CVE-2025-49731	ℹ️ low	3.1	0.0	Improper handling of insufficient permissions or privileges in Microsoft Teams allows an authorized attacker to elevate ...	2025-07-08
CVE-2025-49737	⚠️ high	7.0	0.0	Concurrent execution using shared resource with improper synchronization ('race condition') in Microsoft Teams allows an...	2025-07-08

These CVEs affect the same products