Buffer overflow in Tenda G0
CVE-2026-19792
A security flaw has been discovered in Tenda G0 up to 20260625. Impacted is the function setPortMapping of the file /goform/module of the component httpd web management interface. Performing a manipulation of the argument portMappingServer/porMappingtInternal/portMappingExternal results in buffer overflow. The attack is possible to be carried out remotely. The exploit has been released to the public and may be used for attacks.
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: 0.009 (56.7th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 57th percentile — 56.7% 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: 0.009 · change: +0.004
Affected products
- Tenda G0 — versions 20260625
Weakness classification (CWE)
References
- vuldb.com/vuln/389758 (technical-description, vdb-entry)
- vuldb.com/vuln/389758/cti (signature, permissions-required)
- vuldb.com/cve/CVE-2026-19792 (third-party-advisory)
- vuldb.com/submit/868929 (third-party-advisory)
- github.com/lipenghai/iot_bug/blob/main/Tenda/G0/3.md (exploit)
- www.tenda.com.cn/ (product)
Frequently asked questions
- What is CVE-2026-19792?
- CVE-2026-19792 is a high-severity vulnerability in Tenda G0, classified under Improper Restriction of Operations within the Bounds of a Memory Buffer. CVSS score: 8.8/10. Published 2026-08-14.
- How severe is CVE-2026-19792?
- High severity. CVSS v3 base score is 8.8 out of 10.