Microsoft Teams vulnerabilities

31 vulnerabilities

Known vulnerabilities in Microsoft Teams, newest first, with CVSS severity, EPSS, KEV listings, ransomware use and the affected versions.

5.7CVE-2021-24114microsoftmicrosoft teams for ios+1
EPSS score
3.16%
Microsoft Teams iOS Information Disclosure Vulnerability
7.5CVE-2025-53783microsoftdynamics_365_guides+12
EPSS score
0.81%
Heap-based buffer overflow in Microsoft Teams allows an unauthorized attacker to execute code over a network.
3.1CVE-2025-49731microsoftmicrosoft teams for android+3
EPSS score
0.48%
Improper handling of insufficient permissions or privileges in Microsoft Teams allows an authorized attacker to elevate privileges over a network.
7CVE-2025-49737microsoftmicrosoft teams for mac, new edition+1
EPSS score
0.21%
Concurrent execution using shared resource with improper synchronization ('race condition') in Microsoft Teams allows an authorized attacker to elevate privileges locally.
7.8CVE-2020-17091microsoftmicrosoft teams+1
EPSS score
1.88%
Microsoft Teams Remote Code Execution Vulnerability
5.7CVE-2020-10146microsoftteams
EPSS score
2.32%
The Microsoft Teams online service contains a stored cross-site scripting vulnerability in the displayName parameter that can be exploited on Teams clients to obtain sensitive information such as authentication tokens and to possibly execute arbitrary commands. This vulnerability was fixed for all Teams users in the online service on or around October 2020.
7.5CVE-2022-21965microsoftmicrosoft teams admin center+3
EPSS score
2.96%
Microsoft Teams Denial of Service Vulnerability
5CVE-2024-21448microsoftmicrosoft teams for android+1
EPSS score
1.24%
Microsoft Teams for Android Information Disclosure Vulnerability
5CVE-2024-21374microsoftmicrosoft teams for android+1
EPSS score
0.97%
Microsoft Teams for Android Information Disclosure Vulnerability
9.8CVE-2024-41138microsoftteams+1
EPSS score
0.91%
A library injection vulnerability exists in the com.microsoft.teams2.modulehost.app helper app of Microsoft Teams (work or school) 24046.2813.2770.1094 for macOS. A specially crafted library can leverage Teams's access privileges, leading to a permission bypass. A malicious application could inject a library and start the program to trigger this vulnerability and then make use of the vulnerable application's permissions.
9.8CVE-2024-41145microsoftteams+1
EPSS score
0.80%
A library injection vulnerability exists in the WebView.app helper app of Microsoft Teams (work or school) 24046.2813.2770.1094 for macOS. A specially crafted library can leverage Teams's access privileges, leading to a permission bypass. A malicious application could inject a library and start the program to trigger this vulnerability and then make use of the vulnerable application's permissions.
9.8CVE-2024-42004microsoftteams+1
EPSS score
0.81%
A library injection vulnerability exists in Microsoft Teams (work or school) 24046.2813.2770.1094 for macOS. A specially crafted library can leverage Teams's access privileges, leading to a permission bypass. A malicious application could inject a library and start the program to trigger this vulnerability and then make use of the vulnerable application's permissions.
6.5CVE-2024-38197microsoftmicrosoft teams for ios+1
EPSS score
16.77%
Microsoft Teams for iOS Spoofing Vulnerability
7.8CVE-2019-5922microsoftteams+1
EPSS score
4.61%
Untrusted search path vulnerability in The installer of Microsoft Teams allows an attacker to gain privileges via a Trojan horse DLL in an unspecified directory.
8.2CVE-2026-21535microsoftmicrosoft teams+1
EPSS score
0.65%
Improper access control in Microsoft Teams allows an unauthorized attacker to disclose information over a network.
8.8CVE-2026-65767microsoftmicrosoft teams for android+1
EPSS score
0.61%
Improper neutralization of input during web page generation ('cross-site scripting') in Microsoft Teams for Android allows an authorized attacker to perform spoofing over a network.
9.8CVE-2026-65768microsoftmicrosoft teams for android+1
EPSS score
0.94%
Improper limitation of a pathname to a restricted directory ('path traversal') in Microsoft Teams for Android allows an unauthorized attacker to execute code over a network.
6.8CVE-2026-65812microsoftmicrosoft teams for android+1
EPSS score
0.89%
Insertion of sensitive information into sent data in Microsoft Teams for Android allows an authorized attacker to disclose information over a network.
10CVE-2026-65667microsoftmicrosoft teams+1
EPSS score
0.80%
Missing authorization in Microsoft Teams allows an unauthorized attacker to elevate privileges over a network.
7.5CVE-2026-65769microsoftmicrosoft teams for ios+1
EPSS score
0.92%
Exposure of sensitive information to an unauthorized actor in Microsoft Teams Mobile allows an unauthorized attacker to disclose information over a network.