Heap-Based Buffer Overflow in Microsoft Teams by Microsoft
CVE-2025-53783

7.5HIGH

Key Information:

Vendor

Microsoft
Status
Teams For D365 Remote Assist Hololens
Teams Panel
Teams Phone
Teams For D365 Guides Hololens
Vendor
CVE Published:
12 August 2025

What is CVE-2025-53783?

A heap-based buffer overflow vulnerability in Microsoft Teams allows unauthorized attackers to execute arbitrary code over a network. This security flaw presents significant risks to user data and system integrity, as it can potentially be exploited by sending specially crafted requests to the application. Proper mitigation measures should be enforced to safeguard against such vulnerabilities.

Affected Version(s)

Microsoft Teams for Android Unknown 1.0.0 < 1416/1.0.0.2025102802

Microsoft Teams for Desktop Unknown 1.0.0 < 25122.1415.3698.6812

Microsoft Teams for iOS Unknown 2.0.0 < 7.10.1 (100772025102901)

References

https://msrc.microsoft.com/update-guide/vulnerability/CVE...
vendor-advisory

CVSS V3.1

Score:
7.5
Severity:
HIGH
Confidentiality:
High
Integrity:
High
Availability:
High
Attack Vector:
Network
Attack Complexity:
High
Privileges Required:
None
User Interaction:
Required
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

.
CVE-2025-53783 : Heap-Based Buffer Overflow in Microsoft Teams by Microsoft