Buffer overflow in Tenda F456
CVE-2026-7056
A vulnerability was detected in Tenda F456 1.0.0.5. Impacted is the function fromSafeUrlFilter of the file /goform/SafeUrlFilter of the component httpd. The manipulation of the argument page results in buffer overflow. The attack may be performed from remote. The exploit is now 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: 0.010 (61.8th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 62nd percentile — 61.8% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.006 · newest: 0.010 · change: +0.004
Affected products
- Tenda F456 — versions 1.0.0.5
- Tenda F456 Firmware — versions 1.0.0.5
Weakness classification (CWE)
References
- vuldb.com/vuln/359629 (technical-description, VDB Entry, Third Party Advisory, vdb-entry)
- vuldb.com/vuln/359629/cti (signature, Permissions Required, permissions-required, VDB Entry)
- vuldb.com/submit/798458 (VDB Entry, Third Party Advisory, third-party-advisory)
- vuldb.com/submit/798462 (VDB Entry, Third Party Advisory, third-party-advisory)
- github.com/Litengzheng/vuldb_new/blob/main/F456/vul_127/README.md (Exploit, Third Party Advisory, exploit)
- www.tenda.com.cn/ (Product, product)
Frequently asked questions
- What is CVE-2026-7056?
- CVE-2026-7056 is a high-severity vulnerability in Tenda F456, classified under Improper Restriction of Operations within the Bounds of a Memory Buffer. CVSS score: 8.8/10. Published 2026-04-26.
- How severe is CVE-2026-7056?
- High severity. CVSS v3 base score is 8.8 out of 10.