Buffer overflow in Tenda F451
CVE-2026-11557
A weakness has been identified in Tenda F451 1.0.0.7/1.0.0.9. The affected element is the function fromNatlimit of the file /goform/Natlimit of the component Web Management Interface. Executing a manipulation of the argument page can lead to stack-based buffer overflow. The attack can be executed remotely. The exploit has been made available to the public and could be used for attacks.
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: 0.005 (40.2th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 40th percentile — 40.2% 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
- Tenda F451 — versions 1.0.0.7, 1.0.0.9
Weakness classification (CWE)
References
- github.com/Robots10/IoT_vlu/blob/main/reports/Tenda/fromNatlimit/fromNatlimit.md (exploit)
- vuldb.com/cve/CVE-2026-11557 (third-party-advisory)
- vuldb.com/submit/836477 (third-party-advisory)
- vuldb.com/vuln/369167 (technical-description, vdb-entry)
- vuldb.com/vuln/369167/cti (signature, permissions-required)
- www.tenda.com.cn/ (product)
Frequently asked questions
- What is CVE-2026-11557?
- CVE-2026-11557 is a high-severity vulnerability in Tenda F451, classified under Improper Restriction of Operations within the Bounds of a Memory Buffer. CVSS score: 8.8/10. Published 2026-06-08.
- How severe is CVE-2026-11557?
- High severity. CVSS v3 base score is 8.8 out of 10.