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Vulnerability record · CVE-2025-49737 · published 8 July 2025

CVE-2025-49737: Microsoft teams race condition vulnerability

Microsoft · Teams

Concurrent execution using shared resource with improper synchronization ('race condition') in Microsoft Teams allows an authorized attacker to elevate privileges locally.

7.0 CVSS 3.1 High EPSS 0.19% · top 91.7% CWE-362 · Race condition
7.0CVSS 3.1 base score
0.19%EPSS exploitation probability, 30 days
NoNot in CISA KEV
1Affected product versions listed by NVD
1References
17 Jun 2026Last modified by NVD

Description

Concurrent execution using shared resource with improper synchronization ('race condition') in Microsoft Teams allows an authorized attacker to elevate privileges locally.

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

Affected products

1 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
https://msrc.microsoft.com/update-guide/vulnerability/CVE-2025-49737 Vendor Advisory

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Related vulnerabilities

Same products first, then exploited flaws of the same weakness class.

8.8CVE-2023-4863libwebp Heap Buffer Overflow via Crafted WebP ImageA heap buffer overflow in libwebp allows an out-of-bounds memory write when processing a crafted WebP image. It affects Google Chrome before 116.0.58…KEVEPSS 100%analysed10.0CVE-2026-65667Microsoft teams missing authorization vulnerabilityMissing authorization in Microsoft Teams allows an unauthorized attacker to elevate privileges over a network.EPSS 0.80%9.8CVE-2026-65768Microsoft teams path traversal vulnerabilityImproper limitation of a pathname to a restricted directory ('path traversal') in Microsoft Teams for Android allows an unauthorized attacker to exec…EPSS 0.94%9.8CVE-2024-42004Microsoft teams improper verification of cryptographic signature vulnerabilityA library injection vulnerability exists in Microsoft Teams (work or school) 24046.2813.2770.1094 for macOS. A specially crafted library can leverage…EPSS 0.81%9.8CVE-2024-41138Microsoft teams improper verification of cryptographic signature vulnerabilityA library injection vulnerability exists in the com.microsoft.teams2.modulehost.app helper app of Microsoft Teams (work or school) 24046.2813.2770.10…EPSS 0.91%9.8CVE-2024-41145Microsoft teams improper verification of cryptographic signature vulnerabilityA library injection vulnerability exists in the WebView.app helper app of Microsoft Teams (work or school) 24046.2813.2770.1094 for macOS. A speciall…EPSS 0.80%9.6CVE-2026-62896Microsoft teams improper authentication vulnerabilityImproper authentication in Microsoft Teams allows an authorized attacker to elevate privileges over a network.EPSS 0.69%8.8CVE-2023-29330Microsoft teams use after free vulnerabilityMicrosoft Teams Remote Code Execution VulnerabilityEPSS 2.0%

Source: NIST National Vulnerability Database (record CVE-2025-49737), CISA KEV, FIRST EPSS (scores of 2026-10-02). This page is refreshed as NVD updates the record.