Buffer overflow in Tenda Ch22
CVE-2026-5605
A weakness has been identified in Tenda CH22 1.0.0.1. This affects the function formWrlExtraSet of the file /goform/WrlExtraSet. Executing a manipulation of the argument GO can lead to stack-based buffer overflow. The attack can be executed remotely. The exploit has been made available to the public and could 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: 0.007 (51.5th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 52nd percentile — 51.5% 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 Ch22 — versions 1.0.0.1
- Tenda Ch22 Firmware — versions 1.0.0.1
Weakness classification (CWE)
References
- vuldb.com/vuln/355397 (technical-description, Third Party Advisory, vdb-entry)
- vuldb.com/vuln/355397/cti (signature, Permissions Required, permissions-required)
- vuldb.com/submit/785052 (Third Party Advisory, third-party-advisory)
- github.com/Litengzheng/vuldb_new/blob/main/CH22/vul_54/README.md (Exploit, Third Party Advisory, exploit)
- www.tenda.com.cn/ (Product, product)
Frequently asked questions
- What is CVE-2026-5605?
- CVE-2026-5605 is a high-severity vulnerability in Tenda Ch22, classified under Improper Restriction of Operations within the Bounds of a Memory Buffer. CVSS score: 8.8/10. Published 2026-04-06.
- How severe is CVE-2026-5605?
- High severity. CVSS v3 base score is 8.8 out of 10.