CVE-2025-53783

Microsoft Teams Remote Code Execution Vulnerability

CVE-2025-53783 has no fix on record yet for 1 affected product. It is not reported as exploited. Patch Radar priority: High.

High

CVSS

7.5

Important

Exploitation

None reported

Exploitation Less Likely

CISA KEV

Not listed

Not in the Known Exploited Vulnerabilities catalog

EPSS

0.0089

59th percentile

<p>Heap-based buffer overflow in Microsoft Teams allows an unauthorized attacker to execute code over a network.</p>

Where it's fixed

Product	Fixed in	Fix	Released
No fix yet
Microsoft Teams Classic (Windows apps)	No fix yet	no-fix	n/a

Details

Published
August 12, 2025
Weakness
Heap-based Buffer Overflow
Vendor advisory
https://msrc.microsoft.com/update-guide/vulnerability/CVE-2025-53783

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