UBUNTU-CVE-2026-72694

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Source
https://ubuntu.com/security/CVE-2026-72694
Import Source
https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-72694.json
JSON Data
https://api.osv.dev/v1/vulns/UBUNTU-CVE-2026-72694
Upstream
  • CVE-2026-72694
Published
2026-08-13T00:00:00Z
Modified
2026-08-13T19:31:06.498278884Z
Severity
  • 7.1 (High) CVSS_V3 - CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N CVSS Calculator
  • Ubuntu - medium
Summary
[none]
Details

A flaw was found in MRTG. When the MRTG daemon is started as a root user and subsequently drops privileges, a local, low-privileged attacker can exploit a symbolic link (symlink) following vulnerability. By influencing or pre-placing a symlink in the process ID (PID) file path, the attacker can trick the root process into changing the ownership of an arbitrary existing file to the daemon user. This can lead to local privilege escalation, allowing unauthorized access to or modification of sensitive files.

References

Affected packages

Ubuntu:16.04:LTS
mrtg

Package

Name
mrtg
Purl
pkg:deb/ubuntu/mrtg?arch=source&distro=xenial

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected

Affected versions

2.*
2.17.4-2ubuntu2
2.17.4-3ubuntu1

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "mrtg",
            "binary_version": "2.17.4-3ubuntu1"
        },
        {
            "binary_name": "mrtg-contrib",
            "binary_version": "2.17.4-3ubuntu1"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-72694.json"
Ubuntu:18.04:LTS
mrtg

Package

Name
mrtg
Purl
pkg:deb/ubuntu/mrtg?arch=source&distro=bionic

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected

Affected versions

2.*
2.17.4-4ubuntu1
2.17.4-4.1ubuntu1

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "mrtg",
            "binary_version": "2.17.4-4.1ubuntu1"
        },
        {
            "binary_name": "mrtg-contrib",
            "binary_version": "2.17.4-4.1ubuntu1"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-72694.json"
Ubuntu:20.04:LTS
mrtg

Package

Name
mrtg
Purl
pkg:deb/ubuntu/mrtg?arch=source&distro=focal

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected

Affected versions

2.*
2.17.7-1ubuntu1

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "mrtg",
            "binary_version": "2.17.7-1ubuntu1"
        },
        {
            "binary_name": "mrtg-contrib",
            "binary_version": "2.17.7-1ubuntu1"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-72694.json"
Ubuntu:22.04:LTS
mrtg

Package

Name
mrtg
Purl
pkg:deb/ubuntu/mrtg?arch=source&distro=jammy

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected

Affected versions

2.*
2.17.7-3ubuntu1
2.17.8+git20211026.912afc5-4
2.17.8+git20211026.912afc5-5
2.17.8+git20211109.9205d1d-1
2.17.8+git20211109.9205d1d-2
2.17.8+git20211109.9205d1d-3
2.17.9-1
2.17.10-1
2.17.10-2
2.17.10-3

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "mrtg",
            "binary_version": "2.17.10-3"
        },
        {
            "binary_name": "mrtg-contrib",
            "binary_version": "2.17.10-3"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-72694.json"
Ubuntu:24.04:LTS
mrtg

Package

Name
mrtg
Purl
pkg:deb/ubuntu/mrtg?arch=source&distro=noble

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected

Affected versions

2.*
2.17.10-9
2.17.10-12

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "mrtg",
            "binary_version": "2.17.10-12"
        },
        {
            "binary_name": "mrtg-contrib",
            "binary_version": "2.17.10-12"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-72694.json"
Ubuntu:26.04:LTS
mrtg

Package

Name
mrtg
Purl
pkg:deb/ubuntu/mrtg?arch=source&distro=resolute

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected

Affected versions

2.*
2.17.10-13
2.17.10-14

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "mrtg",
            "binary_version": "2.17.10-14"
        },
        {
            "binary_name": "mrtg-contrib",
            "binary_version": "2.17.10-14"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-72694.json"