Buffer overflow in Tenda F451
CVE-2026-6631
A vulnerability was determined in Tenda F451 1.0.0.7_cn_svn7958. Impacted is the function fromwebExcptypemanFilter of the file /goform/webExcptypemanFilter of the component httpd. Executing a manipulation of the argument page can lead to buffer overflow. The attack may be launched remotely. The exploit has been publicly disclosed and may be utilized.
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: 0.008 (55.8th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 56th percentile — 55.8% 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: 0.008 · change: +0.002
Affected products
- Tenda F451 — versions 1.0.0.7_cn_svn7958
Weakness classification (CWE)
References
- vuldb.com/vuln/358265 (technical-description, vdb-entry)
- vuldb.com/vuln/358265/cti (signature, permissions-required)
- vuldb.com/submit/792904 (third-party-advisory)
- github.com/Jimi-Lab/cve/issues/25 (issue-tracking, exploit)
- www.tenda.com.cn/ (product)
Frequently asked questions
- What is CVE-2026-6631?
- CVE-2026-6631 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 2026-04-20.
- How severe is CVE-2026-6631?
- High severity. CVSS v3 base score is 8.8 out of 10.