Buffer overflow in Tenda Ch22
CVE-2026-5204
A vulnerability was determined in Tenda CH22 1.0.0.1. Affected is the function formWebTypeLibrary of the file /goform/webtypelibrary of the component Parameter Handler. This manipulation of the argument webSiteId causes stack-based buffer…
Vulnerability class: Buffer Overflow
EPSS: 0.001 (35.0th 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 Ch22 — versions 1.0.0.1
Weakness classification (CWE)
References
- VDB-354332 | Tenda CH22 Parameter webtypelibrary formWebTypeLibrary stack-based overflow (vdb-entry, technical-description)
- VDB-354332 | CTI Indicators (IOB, IOC, IOA) (signature, permissions-required)
- Submit #780209 | Tenda CH22 V1.0.0.1 Stack-based Buffer Overflow (third-party-advisory)
- github.com/Litengzheng/vuldb_new/blob/main/CH22/vul_49/README.md (exploit)
- www.tenda.com.cn/ (product)
Frequently asked questions
- What is CVE-2026-5204?
- CVE-2026-5204 is a high-severity vulnerability in Tenda Ch22, classified under Stack-based Buffer Overflow. CVSS score: 8.8/10. Published 2026-03-31.
- How severe is CVE-2026-5204?
- High severity. CVSS v3 base score is 8.8 out of 10.