CVE-2025-53783 Microsoft Teams Remote Code Execution Vulnerability
An unauthorized attacker can execute arbitrary code remotely via a heap-based buffer overflow in Microsoft Teams.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- A user has to click or open something
- Fix
- None listed
What is CVE-2025-53783?
CVE-2025-53783 is a high-severity memory corruption vulnerability in Microsoft Teams for Android, published on 12 Aug 2025. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.
Official description
Heap-based buffer overflow in Microsoft Teams allows an unauthorized attacker to execute code over a network.
Weakness: CWE-122
Which versions are affected by CVE-2025-53783?
It affects 5 products.
Products include Microsoft Dynamics 365 Guides, Microsoft Dynamics 365 Remote Assist, Microsoft Teams, Microsoft Teams Panels, Microsoft Teams Phones.
How do I fix CVE-2025-53783?
No fix has been published for CVE-2025-53783 yet. Limit exposure of the affected software until one is available.
Upgrade to the fixed version. Memory-safe languages, compiler hardening and fuzzing prevent most new cases. More about Memory corruption.
Is CVE-2025-53783 being exploited?
There is no known exploitation of CVE-2025-53783 in the wild and no public exploit code.
Public exploit code: 1 proofs of concept on GitHub.
Sources
Also known as GHSA-56v2-hh65-7486.