Buffer overflow in Novastar Cx40
CVE-2025-3007
A vulnerability was found in Novastar CX40 up to 2.44.0. It has been rated as critical. This issue affects the function getopt of the file /usr/nova/bin/netconfig of the component NetFilter Utility. The manipulation of the argument cmd/netmask/pipeout/nettask leads to stack-based buffer overflow. The exploit has been disclosed to the public and may be used. The vendor was contacted early about this disclosure but did not respond in any way.
Vulnerability class: Buffer Overflow
EPSS: 0.003 (23.1th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 5.5 (Medium). Vector: CVSS:3.1/AV:A/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L.
Affected products
- Novastar Cx40 — versions 2.0, 2.1, 2.2
Weakness classification (CWE)
References
- cna@vuldb.com (technical-description, vdb-entry)
- cna@vuldb.com (signature, permissions-required)
- cna@vuldb.com (third-party-advisory)
Frequently asked questions
- What is CVE-2025-3007?
- CVE-2025-3007 is a medium-severity vulnerability in Novastar Cx40, classified under Improper Restriction of Operations within the Bounds of a Memory Buffer. CVSS score: 5.5/10. Published 2025-03-31.
- How severe is CVE-2025-3007?
- Medium severity. CVSS v3 base score is 5.5 out of 10.