Buffer overflow in Microsoft Teams For Android
CVE-2025-53783
Heap-based buffer overflow in Microsoft Teams allows an unauthorized attacker to execute code over a network.
Vulnerability class: Buffer Overflow
EPSS: 0.002 (40.4th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 7.5 (High). 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.
Affected products
- Microsoft Teams For Android — versions 1.0.0
- Microsoft Teams For Desktop — versions 1.0.0
- Microsoft Teams For Ios — versions 2.0.0
- Microsoft Teams For Mac, New Edition — versions 1.0.0.0
- Microsoft Teams For D365 Guides Hololens — versions 907.0000
- Microsoft Teams For D365 Remote Assist Hololens — versions 316.0000
- Microsoft Teams Panel — versions 1.0.97
- Microsoft Teams Phone — versions 1.0.94
Weakness classification (CWE)
Public proof-of-concept exploits
References
- Microsoft Teams Remote Code Execution Vulnerability (vendor-advisory, patch)
Frequently asked questions
- What is CVE-2025-53783?
- CVE-2025-53783 is a high-severity vulnerability in Microsoft Teams For Android, classified under Heap-based Buffer Overflow. CVSS score: 7.5/10. Published 2025-08-12.
- How severe is CVE-2025-53783?
- High severity. CVSS v3 base score is 7.5 out of 10.
- Is CVE-2025-53783 known to be exploited?
- 3 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.