Buffer overflow in Tenda 4g300
CVE-2026-7470
A flaw has been found in Tenda 4G300 US_4G300V1.0Mt_V1.01.42_CN_TDC01. Affected is the function sub_427C3C of the file /goform/SafeMacFilter. This manipulation of the argument page causes stack-based buffer overflow. Remote exploitation of the attack is possible. The exploit has been published and may be used.
Vulnerability class: Buffer Overflow
Published · last modified .
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.
EPSS exploit prediction
EPSS: 0.010 (60.7th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 61st percentile — 60.7% 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: 0.010 · change: +0.004
Affected products
- Tenda 4g300 — versions US_4G300V1.0Mt_V1.01.42_CN_TDC01
- Tenda 4g300 Firmware — versions 1.01.42_cn_tdc01
Weakness classification (CWE)
References
- vuldb.com/vuln/360206 (technical-description, VDB Entry, Third Party Advisory, vdb-entry)
- vuldb.com/vuln/360206/cti (signature, Permissions Required, permissions-required, VDB Entry)
- vuldb.com/submit/804269 (VDB Entry, Third Party Advisory, third-party-advisory)
- github.com/Axelioc/CVE/blob/main/Tenda/US_4G300/sub_427C3C/sub_427C3C.md (Third Party Advisory, exploit, broken-link, Broken Link)
- www.tenda.com.cn/ (Product, product)
Frequently asked questions
- What is CVE-2026-7470?
- CVE-2026-7470 is a high-severity vulnerability in Tenda 4g300, classified under Improper Restriction of Operations within the Bounds of a Memory Buffer. CVSS score: 8.8/10. Published 2026-04-30.
- How severe is CVE-2026-7470?
- High severity. CVSS v3 base score is 8.8 out of 10.