Buffer overflow in Tenda I24
CVE-2025-3820
A vulnerability was found in Tenda W12 and i24 3.0.0.4(2887)/3.0.0.5(3644) and classified as critical. Affected by this issue is the function cgiSysUplinkCheckSet of the file /bin/httpd. The manipulation of the argument hostIp1/hostIp2 leads to stack-based buffer overflow. The attack may be launched remotely. The exploit has been disclosed to the public 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: 0.127 (96.1th percentile), scored .
Moderate probability of exploitation in the next 30 days — watch for active exploitation reports. 96th percentile — 96.1% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.110 · newest: 0.127 · change: +0.017
Affected products
- Tenda I24 — versions 3.0.0.4(2887), 3.0.0.5(3644)
- Tenda I24 Firmware — versions 3.0.0.4(2887), 3.0.0.5(3644), 3.0.0.4\(2887\)
- Tenda W12 — versions 3.0.0.4(2887), 3.0.0.5(3644)
- Tenda W12 Firmware — versions 3.0.0.4(2887), 3.0.0.5(3644), 3.0.0.4\(2887\)
Weakness classification (CWE)
References
- vuldb.com/ (technical-description, VDB Entry, Third Party Advisory, vdb-entry)
- vuldb.com/ (signature, Permissions Required, permissions-required, VDB Entry)
- vuldb.com/ (VDB Entry, Third Party Advisory, third-party-advisory)
- github.com/02Tn/vul/issues/4 (issue-tracking, Exploit, Third Party Advisory, exploit, Issue Tracking)
- www.tenda.com.cn/ (Product, product)
Frequently asked questions
- What is CVE-2025-3820?
- CVE-2025-3820 is a high-severity vulnerability in Tenda I24, classified under Improper Restriction of Operations within the Bounds of a Memory Buffer. CVSS score: 8.8/10. Published 2025-04-19.
- How severe is CVE-2025-3820?
- High severity. CVSS v3 base score is 8.8 out of 10.