What is the CVSS score of CVE-2025-53783?

CVE-2025-53783 has a CVSS 3.1 base score of 7.5 (High). CVSS vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H. EPSS exploitation probability: 0.1%.

Which versions of Dynamics 365 Guides are affected by CVE-2025-53783?

Organizations using Heap-based buffer overflow in Microsoft Teams face notable risk from CVE-2025-53783, a heap-based buffer overflow vulnerability rated CVSS 7.5.

How to fix or mitigate CVE-2025-53783?

Within 7 days: Identify all affected systems and apply vendor patches promptly. If patching is delayed, consider network segmentation to limit exposure.

Dynamics 365 Guides CVE-2025-53783

HIGH

Heap-based Buffer Overflow (CWE-122)

2025-08-12 secure@microsoft.com

Heap Overflow Buffer Overflow Microsoft Dynamics 365 Guides Dynamics 365 Remote Assist Teams Teams Panels Teams Phones

7.5

CVSS 3.1 · NVD

Severity by source

NVD PRIMARY

7.5 HIGH

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

Primary rating from NVD · only source for this CVE.

CVSS VectorNVD

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

Attack Vector

Network

Attack Complexity

High

Privileges Required

None

User Interaction

Required

Scope

Unchanged

Confidentiality

High

Integrity

High

Availability

High

Lifecycle Timeline

Analysis Generated

Mar 28, 2026 - 19:06 vuln.today

CVE Published

Aug 12, 2025 - 18:15 nvd

HIGH 7.5

DescriptionCVE.org

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

AnalysisAI

Heap-based buffer overflow in Microsoft Teams allows an unauthorized attacker to execute code over a network. Rated high severity (CVSS 7.5), this vulnerability is remotely exploitable, no authentication required. No vendor patch available.

Technical ContextAI

This vulnerability is classified under CWE-122. Heap-based buffer overflow in Microsoft Teams allows an unauthorized attacker to execute code over a network. Affected products include: Microsoft Dynamics 365 Guides, Microsoft Dynamics 365 Remote Assist, Microsoft Teams, Microsoft Teams Panels, Microsoft Teams Phones.

RemediationAI

No vendor patch is available at time of analysis. Monitor vendor advisories for updates. Apply vendor patches when available. Implement network segmentation and monitoring as interim mitigations.