Buffer overflow in Tenda Cx12l
CVE-2026-5684
A vulnerability was determined in Tenda CX12L 16.03.53.12. Affected by this issue is the function fromwebExcptypemanFilter of the file /goform/webExcptypemanFilter. Executing a manipulation of the argument page can lead to stack-based buffer overflow. The attack requires access to the local network. The exploit has been publicly disclosed and may be utilized.
Vulnerability class: Buffer Overflow
Published · last modified .
CVSS v3 metric
CVSS v3 base score 8.0 (High). Vector: CVSS:3.1/AV:A/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H.
EPSS exploit prediction
EPSS: 0.007 (52.2th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 52nd percentile — 52.2% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.007 · newest: 0.007 · change: 0.000
Affected products
- Tenda Cx12l — versions 16.03.53.12
- Tenda Cx12l Firmware — versions 16.03.53.12
Weakness classification (CWE)
References
- vuldb.com/vuln/355511 (technical-description, VDB Entry, Third Party Advisory, vdb-entry)
- vuldb.com/vuln/355511/cti (signature, Permissions Required, permissions-required, VDB Entry)
- vuldb.com/submit/792781 (VDB Entry, Third Party Advisory, third-party-advisory)
- github.com/cve-a/lvdan/issues/2 (issue-tracking, Exploit, Third Party Advisory, exploit, Mitigation, Issue Tracking)
- www.tenda.com.cn/ (Product, product)
Frequently asked questions
- What is CVE-2026-5684?
- CVE-2026-5684 is a high-severity vulnerability in Tenda Cx12l, classified under Improper Restriction of Operations within the Bounds of a Memory Buffer. CVSS score: 8.0/10. Published 2026-04-06.
- How severe is CVE-2026-5684?
- High severity. CVSS v3 base score is 8.0 out of 10.