CVE-2025-49737

Local privilege escalation via undisclosed race condition

Published Jul 8, 2025 · Updated Feb 26, 2026

Race condition in Microsoft Teams for Mac before 25163.3001.3726.6503 allows local users to elevate privileges on the host. Microsoft identifies improper synchronization of a shared resource but has not disclosed the resource, code path, or conflicting operations that create the race. Exploitation requires a low-privileged local user to win a high-complexity race; successful exploitation grants higher privileges on the Mac.

CVSS severity7.0
High
EPSS probability0.18%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Race condition in Microsoft Teams for Mac before 25163.3001.3726.6503 allows local users to elevate privileges on the host. Microsoft identifies improper synchronization of a shared resource but has not disclosed the resource, code path, or conflicting operations that create the race. Exploitation requires a low-privileged local user to win a high-complexity race; successful exploitation grants higher privileges on the Mac.

The record

CVE
CVE-2025-49737
Published
Jul 8, 2025
Updated
Feb 26, 2026
Vendor
Microsoft
Product
Microsoft Teams
Classifications
CWE-362, T1068
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. Jul 8, 2025CVE publishedPublication date reported by the CVE source.
  2. Feb 26, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=1.0.0.0 <25163.3001.3726.6503

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

Microsoft · Microsoft Teamsversion=1.0.0.0 <25163.3001.3726.6503

Published CVSS scores

7.0Microsoft CorporationCVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectorlocal
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-362Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition')
T1068Exploitation for Privilege Escalation

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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