Buffer overflow in Tenda A18 Pro
CVE-2026-4493
A vulnerability was determined in Tenda A18 Pro 02.03.02.28. The impacted element is the function sub_423B50 of the file /goform/setMacFilterCfg of the component MAC Filtering Configuration Endpoint. Executing a manipulation of the argumen…
Vulnerability class: Buffer Overflow
EPSS: 0.001 (20.3th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 8.8 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H/E:P/RL:X/RC:R.
Affected products
- Tenda A18 Pro — versions 02.03.02.28
Weakness classification (CWE)
References
- VDB-352019 | Tenda A18 Pro MAC Filtering Configuration Endpoint setMacFilterCfg sub_423B50 stack-based overflow (vdb-entry, technical-description)
- VDB-352019 | CTI Indicators (IOB, IOC, IOA) (signature, permissions-required)
- Submit #773727 | Tenda A18pro V02.03.02.28 Stack-based Buffer Overflow (third-party-advisory)
- github.com/lilukun337/cve/issues/5 (exploit, issue-tracking)
- www.tenda.com.cn/ (product)
Frequently asked questions
- What is CVE-2026-4493?
- CVE-2026-4493 is a high-severity vulnerability in Tenda A18 Pro, classified under Stack-based Buffer Overflow. CVSS score: 8.8/10. Published 2026-03-20.
- How severe is CVE-2026-4493?
- High severity. CVSS v3 base score is 8.8 out of 10.