UBUNTU-CVE-2026-2966

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Source
https://ubuntu.com/security/CVE-2026-2966
Import Source
https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-2966.json
JSON Data
https://api.osv.dev/v1/vulns/UBUNTU-CVE-2026-2966
Upstream
Published
2026-02-23T03:15:00Z
Modified
2026-02-27T09:58:16Z
Severity
  • 3.7 (Low) CVSS_V3 - CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:L/A:N CVSS Calculator
  • 2.9 (Low) CVSS_V4 - CVSS:4.0/AV:N/AC:H/AT:N/PR:N/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N/E:P CVSS Calculator
  • Ubuntu - medium
Summary
[none]
Details

A weakness has been identified in Cesanta Mongoose up to 7.20. The impacted element is the function mg_sendnsreq of the file /src/dns.c of the component DNS Transaction ID Handler. Executing a manipulation of the argument random can lead to insufficiently random values. The attack can be launched remotely. The attack requires a high level of complexity. The exploitability is regarded as difficult. The exploit has been made available to the public and could be used for attacks. The vendor was contacted early about this disclosure but did not respond in any way.

References

Affected packages

Ubuntu:20.04:LTS / opencpn

Package

Name
opencpn
Purl
pkg:deb/ubuntu/opencpn@5.0.0+dfsg-1?arch=source&distro=focal

Affected ranges

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

Affected versions

5.*
5.0.0+dfsg-1

Ecosystem specific 

{
    "binaries": [
        {
            "binary_version": "5.0.0+dfsg-1",
            "binary_name": "opencpn"
        },
        {
            "binary_version": "5.0.0+dfsg-1",
            "binary_name": "opencpn-data"
        },
        {
            "binary_version": "5.0.0+dfsg-1",
            "binary_name": "opencpn-plugins"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-2966.json"

Ubuntu:22.04:LTS / opencpn

Package

Name
opencpn
Purl
pkg:deb/ubuntu/opencpn@5.6.0+dfsg1-1?arch=source&distro=jammy

Affected ranges

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

Affected versions

5.*
5.2.4+dfsg-1
5.6.0+dfsg1-1

Ecosystem specific 

{
    "binaries": [
        {
            "binary_version": "5.6.0+dfsg1-1",
            "binary_name": "opencpn"
        },
        {
            "binary_version": "5.6.0+dfsg1-1",
            "binary_name": "opencpn-data"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-2966.json"

Ubuntu:24.04:LTS / opencpn

Package

Name
opencpn
Purl
pkg:deb/ubuntu/opencpn@5.8.4+dfsg-1build4?arch=source&distro=noble

Affected ranges

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

Affected versions

5.*
5.8.4+dfsg-1
5.8.4+dfsg-1build3
5.8.4+dfsg-1build4

Ecosystem specific 

{
    "binaries": [
        {
            "binary_version": "5.8.4+dfsg-1build4",
            "binary_name": "opencpn"
        },
        {
            "binary_version": "5.8.4+dfsg-1build4",
            "binary_name": "opencpn-data"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-2966.json"

Ubuntu:25.10 / opencpn

Package

Name
opencpn
Purl
pkg:deb/ubuntu/opencpn@1:5.10.2+dfsg-1?arch=source&distro=questing

Affected ranges

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

Affected versions

1:5.*
1:5.10.2+dfsg-1

Ecosystem specific 

{
    "binaries": [
        {
            "binary_version": "1:5.10.2+dfsg-1",
            "binary_name": "opencpn"
        },
        {
            "binary_version": "1:5.10.2+dfsg-1",
            "binary_name": "opencpn-data"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-2966.json"