CVE-2025-49809

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, as an indirect consequence of Homebrew not installing setuid binaries.

CVE-2025-49809 is fixed in 5 products on 1 platform, first by DEBIAN-CVE-2025-49809, released July 4, 2025. It is not reported as exploited. Patch Radar priority: High.

High

CVSS

7.8

Important

Exploitation

None reported

No vendor assessment

CISA KEV

Not listed

Not in the Known Exploited Vulnerabilities catalog

EPSS

0.0018

7th percentile

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, as an indirect consequence of Homebrew not installing setuid binaries.

Where it's fixed

Product	Fixed in	Fix	Released
Linux
mtr · Debian 14	0.96-1	DEBIAN-CVE-2025-49809	Jul 4, 2025
mtr · amzn 2023	2:0.95-3.amzn2023.0.2	ALAS2023-2025-1102	Jul 21, 2025
mtr-debuginfo · amzn 2023	2:0.95-3.amzn2023.0.2	ALAS2023-2025-1102	Jul 21, 2025
mtr-debugsource · amzn 2023	2:0.95-3.amzn2023.0.2	ALAS2023-2025-1102	Jul 21, 2025
mtr-gtk · amzn 2023	2:0.95-3.amzn2023.0.2	ALAS2023-2025-1102	Jul 21, 2025
mtr-gtk-debuginfo · amzn 2023	2:0.95-3.amzn2023.0.2	ALAS2023-2025-1102	Jul 21, 2025

Details

Published
July 4, 2025
Weakness
Inclusion of Functionality from Untrusted Control Sphere
CVSS vector
CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:H
Vendor advisory
https://msrc.microsoft.com/update-guide/vulnerability/CVE-2025-49809

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