Buffer overflow in Tenda F451
CVE-2026-5991
A vulnerability was found in Tenda F451 1.0.0.7. Affected by this issue is the function formWrlExtraSet of the file /goform/WrlExtraSet. The manipulation of the argument GO results in stack-based buffer overflow. The attack may be launched…
Vulnerability class: Buffer Overflow
EPSS: 0.001 (26.1th 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.
Affected products
- Tenda F451 — versions 1.0.0.7
- Tenda F451_firmware — versions 1.0.0.7
Weakness classification (CWE)
References
- VDB-356545 | Tenda F451 WrlExtraSet formWrlExtraSet stack-based overflow (technical-description, Third Party Advisory, VDB Entry, vdb-entry)
- VDB-356545 | CTI Indicators (IOB, IOC, IOA) (signature, Permissions Required, permissions-required, VDB Entry)
- Submit #792862 | Tenda F451_kfw_V1.0.0.7_cn_svn7958 V1.0.0.7 Buffer Overflow (Third Party Advisory, VDB Entry, third-party-advisory)
- cna@vuldb.com (issue-tracking, exploit, Broken Link)
- cna@vuldb.com (Product, product)
Frequently asked questions
- What is CVE-2026-5991?
- CVE-2026-5991 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 2026-04-10.
- How severe is CVE-2026-5991?
- High severity. CVSS v3 base score is 8.8 out of 10.