Microsoft Teams
CVE-2025-53783 — Microsoft Teams Remote Code Execution Vulnerability
Executive Summary
Heap-based buffer overflow in Microsoft Teams allows an unauthorized attacker to execute code over a network.
Overview
7.5
CVSS HIGH
Important
MS Severity
Not Exploited
MS Exploit Status
Less Likely
MS Exploit Likelihood
CVSS Vector
CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C
ATTACK VECTOR
Network
ATTACK COMPLEXITY
High
PRIVILEGES REQUIRED
None
USER INTERACTION
Required
SCOPE
Unchanged
CONFIDENTIALITY
High
INTEGRITY
High
AVAILABILITY
High
EXPLOIT CODE MATURITY
Unproven
REMEDIATION LEVEL
Official Fix
REPORT CONFIDENCE
Confirmed
Temporal Score: 6.5
EPSS Score
0.00756
probability of exploitation in the next 30 days
0.50273 percentile - updated 2026-06-21
View on FIRST.org
Affected Products
8 affected products
| Product | KB Article | Severity | Impact | Restart Required |
|---|---|---|---|---|
| Microsoft Teams for Android | Release Notes (Security Update) |
Important | Remote Code Execution | Maybe |
| Microsoft Teams for Desktop | Release Notes (Security Update) |
Important | Remote Code Execution | Maybe |
| Microsoft Teams for iOS | Release Notes (Security Update) |
Important | Remote Code Execution | Maybe |
| Microsoft Teams for Mac | Release Notes (Security Update) |
Important | Remote Code Execution | No |
| Teams for D365 Guides Hololens | Release Notes (Security Update) |
Important | Remote Code Execution | Maybe |
| Teams for D365 Remote Assist HoloLens | Release Notes (Security Update) |
Important | Remote Code Execution | Maybe |
| Teams Panels | Release Notes (Security Update) |
Important | Remote Code Execution | Maybe |
| Teams Phones | Release Notes (Security Update) |
Important | Remote Code Execution | Maybe |
Patches
1 patch
| Article | Type | Restart |
|---|---|---|
Release Notes |
Security Update | Maybe |
Known Exploits
No known exploits have been linked for this CVE yet. When available, exploit references will be sourced from public repositories and may be unverified, incomplete, or non-functional. Always review code carefully before use in any environment.
Acknowledgments
Anonymous working with Trend Zero Day Initiative
References
On This Page