Buffer overflow in Tenda F451
CVE-2026-6123
A vulnerability was found in Tenda F451 1.0.0.7. This affects the function fromAddressNat of the file /goform/addressNat of the component httpd. Performing a manipulation of the argument entrys results in stack-based buffer overflow. Remote exploitation of the attack is possible. The exploit has been made public and could 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 (61.1th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 61st percentile — 61.1% 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: 0.010 · change: +0.004
Affected products
- Tenda F451 — versions 1.0.0.7
- Tenda F451 Firmware — versions 1.0.0.7
Weakness classification (CWE)
References
- vuldb.com/vuln/356986 (technical-description, VDB Entry, Third Party Advisory, vdb-entry)
- vuldb.com/vuln/356986/cti (signature, Permissions Required, permissions-required, VDB Entry)
- vuldb.com/submit/792873 (VDB Entry, Third Party Advisory, third-party-advisory)
- vuldb.com/submit/792879 (VDB Entry, Third Party Advisory, third-party-advisory)
- github.com/Jimi-Lab/cve/issues/15 (issue-tracking, exploit, Broken Link)
- www.tenda.com.cn/ (Product, product)
Frequently asked questions
- What is CVE-2026-6123?
- CVE-2026-6123 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 2026-04-12.
- How severe is CVE-2026-6123?
- High severity. CVSS v3 base score is 8.8 out of 10.