mtr through 0.95, in certain privileged contexts, mishandles execution of a program specified by the MTR_PACKET environment variable. NOTE: mtr on macOS may often have Sudo rules, — CVE-2025-49809

Summary

Advisory CVE-2025-49809. mtr through 0.95, in certain privileged contexts, mishandles execution of a program specified by the MTR_PACKET environment variable.… Vendor: Microsoft. Source: MSRC. Threat: high. CVSS 7.8. See the official…

What to do

General, cautious steps (verify details in the official source):

• Prioritize patching or mitigation immediately (treat as actively risky).
• Identify affected product versions in your inventory and verify whether you are impacted.
• Apply vendor patches/updates or recommended mitigations as soon as available.
• Read the official advisory for exact affected versions and remediation steps.

Official advisory

Read the official source

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