CVE-2025-53783

HIGH

Published Aug 12, 2025 Modified Sep 3, 2025 CWE-122

Description

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

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CVSS v3.1 Score

7.5

HIGH

CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H

Weakness Type (CWE)

CWE-122 CWE-122

Affected Products

Vendor	Product	Versions
microsoft	dynamics_365_guides	< 907.2505.29001.0
microsoft	dynamics_365_remote_assist	< 316.2505.28001
microsoft	teams	< 1.0.0.2025102802
microsoft	teams	< 7.10.1
microsoft	teams	< 25122.1207.3700.1444
microsoft	teams	< 25122.1415.3698.6812
microsoft	teams_panels	< 1.0.97.2025102203
microsoft	teams_phones	< 1.0.94.2025168802

References

Advisories & Patches

https://msrc.microsoft.com/update-guide/vulnerability/CVE-2025-53783

Frequently Asked Questions

What is CVE-2025-53783? +

Heap-based buffer overflow in Microsoft Teams allows an unauthorized attacker to execute code over a network. It has a CVSS v3.1 base score of 7.5 (HIGH).

How severe is CVE-2025-53783? +

CVE-2025-53783 has a CVSS v3.1 score of 7.5 out of 10, rated HIGH. This is a high-severity vulnerability that should be prioritized for patching.

What products are affected by CVE-2025-53783? +

CVE-2025-53783 affects products from microsoft, specifically: dynamics_365_guides, dynamics_365_remote_assist, teams, teams_panels, teams_phones. Check the affected products table above for specific version ranges.

How do I check if I'm vulnerable to CVE-2025-53783? +

You can use Secably's free Website Scanner to check your website for known vulnerabilities. For infrastructure scanning, use the Port Scanner to identify exposed services that may be affected. Check the vendor advisories linked above for specific patch and version information.

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