🛡️ USN-8429-1 — fastnetmon (CVE-2026-48686 +4 more)

⚪ Unknown ✅ No Known Exploit OSV
N/A
CVSS Score
0 Low4 Medium7 High9 Critical10

Description

fastnetmon vulnerabilities

It was discovered that FastNetMon incorrectly validated prefix lengths when

decoding BGP NLRI data. A remote attacker could possibly use this issue to

cause a denial of service or execute arbitrary code. This issue only

affected Ubuntu 24.04 LTS and Ubuntu 26.04 LTS. (CVE-2026-48686)

It was discovered that FastNetMon incorrectly sanitized input in the

Juniper router integration plugin. An attacker could possibly use this

issue to execute arbitrary commands. (CVE-2026-48687)

It was discovered that FastNetMon incorrectly handled buffer bounds checks

when processing network traffic. A remote attacker could possibly use this

issue to cause a denial of service or execute arbitrary code. This issue

only affected Ubuntu 24.04 LTS and Ubuntu 26.04 LTS. (CVE-2026-48689)

It was discovered that FastNetMon incorrectly handled encoding the BGP

AS_PATH attribute. A remote attacker could possibly use this issue to cause

a denial of service or execute arbitrary code. This issue only affected

Ubuntu 24.04 LTS and Ubuntu 26.04 LTS. (CVE-2026-48691)

It was discovered that FastNetMon incorrectly validated IP address input in

the Juniper router integration plugin. An attacker could possibly use this

issue to inject arbitrary router configuration commands. (CVE-2026-48694)

Affected software

USN-8429-1 is recorded against 1 package.

  • fastnetmon (fixed in 1.2.8+git20250911-2ubuntu0.1~esm1)

Timeline and source

Published on 15 June 2026 and last revised on 16 June 2026. No public exploit is currently recorded for this entry. Record sourced from OSV.

References

ubuntu.com (Advisory)
ubuntu.com (Report)
ubuntu.com (Report)
ubuntu.com (Report)
ubuntu.com (Report)
ubuntu.com (Report)

Details

Severity Unknown
CVSS Score N/A
CVSS Vector N/A
CWE N/A
Public Exploit ✅ No
Source OSV
Published 2026-06-15
Updated 2026-08-12
Modified 2026-06-16
Fix URL N/A

Affected Packages

Software From version Fixed in
fastnetmon — 1.2.8+git20250911-2ubuntu0.1~esm1

Similar Threats

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