Buffer overflow in Tenda Ch22
CVE-2025-11423
A vulnerability was found in Tenda CH22 1.0.0.1. This affects the function formSafeEmailFilter of the file /goform/SafeEmailFilter. Performing a manipulation of the argument page results in memory corruption. The attack is possible to be c…
Vulnerability class: Buffer Overflow
EPSS: 0.006 (68.5th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 9.8 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/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-327358 | Tenda CH22 SafeEmailFilter formSafeEmailFilter memory corruption (vdb-entry, technical-description)
- VDB-327358 | CTI Indicators (IOB, IOC, IOA) (signature, permissions-required)
- Submit #666009 | Tenda Shenzhen Jixiang Tengda Technology Co., Ltd. Router CH22 V1.0.0.1 Tenda V1.0.0.1 Buffer Overflow (third-party-advisory)
- github.com/f000x0/cve/issues/7 (exploit, issue-tracking)
- www.tenda.com.cn/ (product)
Frequently asked questions
- What is CVE-2025-11423?
- CVE-2025-11423 is a critical-severity vulnerability in Tenda Ch22, classified under Improper Restriction of Operations within the Bounds of a Memory Buffer. CVSS score: 9.8/10. Published 2025-10-08.
- How severe is CVE-2025-11423?
- Critical severity. CVSS v3 base score is 9.8 out of 10.