Detections
Analytics

Azure Linux 3.0 Security Update: mtr (CVE-2025-49809)

high Nessus Plugin ID 295413

Synopsis

The remote Azure Linux host is missing one or more security updates.

Description

The version of mtr installed on the remote Azure Linux 3.0 host is prior to tested version. It is, therefore, affected by a vulnerability as referenced in the CVE-2025-49809 advisory.

 - 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)

Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version number.

Solution

Update the affected packages.

See Also

https://nvd.nist.gov/vuln/detail/CVE-2025-49809

Plugin Details

Severity: High

ID: 295413

File Name: azure_linux_CVE-2025-49809.nasl

Version: 1.1

Type: local

Published: 1/22/2026

Updated: 1/22/2026

Supported Sensors: Nessus

Risk Information

VPR

Risk Factor: Medium

Score: 6.5

CVSS v2

Risk Factor: Medium

Base Score: 6

Temporal Score: 4.4

Vector: CVSS2#AV:L/AC:H/Au:S/C:C/I:C/A:C

CVSS Score Source: CVE-2025-49809

CVSS v3

Risk Factor: High

Base Score: 7.8

Temporal Score: 6.8

Vector: CVSS:3.0/AV:L/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:H

Temporal Vector: CVSS:3.0/E:U/RL:O/RC:C

Vulnerability Information

CPE: p-cpe:/a:microsoft:azure_linux:mtr-debuginfo, p-cpe:/a:microsoft:azure_linux:mtr, x-cpe:/o:microsoft:azure_linux

Required KB Items: Host/local_checks_enabled, Host/AzureLinux/release, Host/AzureLinux/rpm-list, Host/cpu

Exploit Ease: No known exploits are available

Patch Publication Date: 7/8/2025

Vulnerability Publication Date: 7/4/2025

Reference Information

CVE: CVE-2025-49809

IAVA: 2025-A-0569