CVE-2025-53783
Microsoft Teams Remote Code Execution Vulnerability
Heap-based buffer overflow in Microsoft Teams allows an unauthorized attacker to execute code over a network.
Attack profile
How easy it is to exploit
- Attack vector
- Network
- Complexity
- High
- Privileges needed
- None
- User interaction
- Required
What an attacker can affect
- Confidentiality
- High
- Integrity
- High
- Availability
- High
Exploit likelihood
What each source reports
CVE List Score used
Microsoft Teams Remote Code Execution Vulnerability
Heap-based buffer overflow in Microsoft Teams allows an unauthorized attacker to execute code over a network.
- Record
CVE-2025-53783- CVSS 3.1
- 7.5 High
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 - Weakness
- CWE-122
- Updated
- 2026-11-02
EUVDEUVD-2025-24283
Heap-based buffer overflow in Microsoft Teams allows an unauthorized attacker to execute code over a network.
- Record
EUVD-2025-24283- CVSS 3.1
- 7.5 High
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 - Updated
- 2026-11-02
GitHub AdvisoriesGHSA-56v2-hh65-7486
Heap-based buffer overflow in Microsoft Teams allows an unauthorized attacker to execute code...
Heap-based buffer overflow in Microsoft Teams allows an unauthorized attacker to execute code over a network.
- Record
GHSA-56v2-hh65-7486- CVSS 3.1
- 7.5 High
CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H - Weakness
- CWE-122
- Updated
- 2026-11-02
NVD
Heap-based buffer overflow in Microsoft Teams allows an unauthorized attacker to execute code over a network.
- Record
CVE-2025-53783- CVSS 3.1
- 7.5 High
CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H - Weakness
- CWE-122
- Updated
- 2026-11-02
Affected products
- microsoft teams
- microsoft dynamics 365 guides
- microsoft dynamics 365 remote assist
- microsoft teams for android
- microsoft teams for desktop
- microsoft teams for ios
- microsoft teams for mac, new edition
- microsoft teams for d365 guides hololens
- microsoft teams for d365 remote assist hololens
- microsoft teams panel
- microsoft teams phone
- microsoft teams panels
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Public exploits
Links only. Every CVE stores no exploit code.
| Source | Link | Date |
|---|---|---|
| PoC in GitHub | ksgassama-lab/MSTeams---Vulnerability---Remediation | 2026-01-14 |
History
| Recorded | Changed | Sources |
|---|---|---|
| first indexed | CVE List, EUVD, GitHub Advisories, NVD, PoC in GitHub |
Dates are when Every CVE recorded each change. Upstream dates may differ.
In short
CVE-2025-53783 is a high vulnerability (CVSS 7.5) in Microsoft Teams, published August 12, 2025. Public exploit code exists. EPSS puts the chance of exploitation in the next 30 days at 0.89%, the 59th percentile. No source names a fixed version.