Buffer overflow in Tenda F456
CVE-2026-6199
A vulnerability was found in Tenda F456 1.0.0.5. Impacted is the function fromqossetting of the file /goform/qossetting. The manipulation of the argument page results in stack-based buffer overflow. It is possible to launch the attack remo…
Vulnerability class: Buffer Overflow
EPSS: 0.001 (17.7th 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/E:P/RL:X/RC:R.
Affected products
- Tenda F456 — versions 1.0.0.5
Weakness classification (CWE)
References
- VDB-357121 | Tenda F456 qossetting fromqossetting stack-based overflow (vdb-entry, technical-description)
- VDB-357121 | CTI Indicators (IOB, IOC, IOA) (signature, permissions-required)
- Submit #797471 | Tenda F456 v1.0.0.5 Stack-based Buffer Overflow (third-party-advisory)
- github.com/Litengzheng/vuldb_new/blob/main/F456/vul_116/README.md (exploit)
- www.tenda.com.cn/ (product)
Frequently asked questions
- What is CVE-2026-6199?
- CVE-2026-6199 is a high-severity vulnerability in Tenda F456, classified under Stack-based Buffer Overflow. CVSS score: 8.8/10. Published 2026-04-13.
- How severe is CVE-2026-6199?
- High severity. CVSS v3 base score is 8.8 out of 10.