Auth bypass in Lucky Lm-520-Fsc
CVE-2025-5876
A vulnerability classified as problematic was found in Lucky LM-520-SC, LM-520-FSC and LM-520-FSC-SAM up to 20250321. Affected by this vulnerability is an unknown functionality. The manipulation leads to missing authentication. The attack can be launched remotely. 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: Broken Authentication
Published · last modified .
CVSS v3 metric
CVSS v3 base score 5.3 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N.
EPSS exploit prediction
EPSS: 0.005 (38.2th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 38th percentile — 38.2% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.005 · newest: 0.005 · change: +0.000
Affected products
- Lucky Lm-520-Fsc — versions 20250321
- Lucky Lm-520-Fsc-Sam — versions 20250321
- Lucky Lm-520-Sc — versions 20250321
Weakness classification (CWE)
References
- vuldb.com/ (vdb-entry)
- vuldb.com/ (signature, permissions-required)
- vuldb.com/ (third-party-advisory)
- github.com/zeke2997/cve_request_LuckyTechnologyLtd (exploit)
Frequently asked questions
- What is CVE-2025-5876?
- CVE-2025-5876 is a medium-severity vulnerability in Lucky Lm-520-Fsc, classified under Improper Authentication. CVSS score: 5.3/10. Published 2025-06-09.
- How severe is CVE-2025-5876?
- Medium severity. CVSS v3 base score is 5.3 out of 10.