CVE catalog

CVE-2025-49809

mtr: CVE-2025-49809

Severity: High · CVSS 7.8CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Published: Jul 4, 2025, 12:00:00 AM UTC
Source: [NVD] · [CVE record]
EPSS: 0.18% · Oct 25, 2026

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.

Vulnerable and fixed packages

Distribution-reported package versions and fixes. These do not depend on matching against the OpenFactory package catalog.

Distribution	Package	Release	Version	Status
Debian	mtr	sid	`0.96-2`	fixed
Debian	mtr	forky	`0.96-2`	fixed
Debian	mtr	trixie	`0.95-1.1`	vulnerable
Debian	mtr	bookworm	`0.95-1`	vulnerable
Ubuntu	mtr	14.04	`0.85-1`	vulnerable
Ubuntu	mtr	14.04	`0.85-2`	vulnerable
Ubuntu	mtr	16.04	`0.85-3`	vulnerable
Ubuntu	mtr	16.04	`0.86-1`	vulnerable
Ubuntu	mtr	16.04	`0.86-1ubuntu0.1`	vulnerable
Ubuntu	mtr	18.04	`0.87-1`	vulnerable
Ubuntu	mtr	18.04	`0.92-1`	vulnerable
Ubuntu	mtr	20.04	`0.93-1`	vulnerable
Ubuntu	mtr	22.04	`0.94-1build1`	vulnerable
Ubuntu	mtr	22.04	`0.94-2ubuntu1`	vulnerable
Ubuntu	mtr	22.04	`0.95-1`	vulnerable
Ubuntu	mtr	24.04	`0.95-1`	vulnerable
Ubuntu	mtr	24.04	`0.95-1.1`	vulnerable
Ubuntu	mtr	24.04	`0.95-1.1build1`	vulnerable
Ubuntu	mtr	24.04	`0.95-1.1build2`	vulnerable
Ubuntu	mtr	24.04	`0.95-1.1ubuntu0.1`	vulnerable
Ubuntu	mtr	25.10	`0.95-1.1ubuntu1`	vulnerable
Ubuntu	mtr	26.04	`0.95-1.1ubuntu1`	vulnerable
Ubuntu	mtr	26.04	`0.95-1.1ubuntu2`	vulnerable

Fixed-version evidence

Distribution	Package	Type	Release	Fixed version	Urgency	Origin	Bugs
Debian	mtr	source	sid	`0.96-1`	unimportant	Not reported	Not reported
Debian	mtr	source	forky	`0.96-1`	unimportant	Not reported	Not reported
Debian	mtr	source	trixie	`(unfixed)`	unimportant	Not reported	Not reported
Debian	mtr	source	bookworm	`(unfixed)`	unimportant	Not reported	Not reported

OpenFactory catalog packages

[Debian 12 (Bookworm)]

[mtr]Affected
Details (2)
- 0.95-1 · amd64 · bookworm
  Affected
  dsa · mtr · debian · bookworm; dsa · mtr · debian · 12
- 0.95-1 · arm64 · bookworm
  Affected
  dsa · mtr · debian · bookworm; dsa · mtr · debian · 12
[mtr-tiny]Affected
Source package: [mtr]
Details (2)
- 0.95-1 · amd64 · bookworm
  Affected
  dsa · mtr · debian · bookworm; dsa · mtr · debian · 12
- 0.95-1 · arm64 · bookworm
  Affected
  dsa · mtr · debian · bookworm; dsa · mtr · debian · 12

[Debian 13 (Trixie)]

[mtr]Affected
Details (4)
- 0.95-1.1+b1 · amd64 · trixie
  Affected
  dsa · mtr · debian · 13
- 0.95-1.1+b2 · arm64 · trixie
  Affected
  dsa · mtr · debian · 13
- 0.96-1~bpo13+1 · amd64 · trixie-backports
  Affected
  dsa · mtr · debian · 13
- 0.96-1~bpo13+1 · arm64 · trixie-backports
  Affected
  dsa · mtr · debian · 13
[mtr-tiny]Affected
Source package: [mtr]
Details (4)
- 0.95-1.1+b1 · amd64 · trixie
  Affected
  dsa · mtr · debian · 13
- 0.95-1.1+b2 · arm64 · trixie
  Affected
  dsa · mtr · debian · 13
- 0.96-1~bpo13+1 · amd64 · trixie-backports
  Affected
  dsa · mtr · debian · 13
- 0.96-1~bpo13+1 · arm64 · trixie-backports
  Affected
  dsa · mtr · debian · 13

Observed: Oct 24, 2026, 9:23:54 PM UTC

References

[Debian Security Tracker] · [FIRST EPSS] · [OSV Package Vulnerability Database] · [Red Hat security advisories and VEX]