Vulnerability · Published Apr 5, 2026 · Assigned by VulDB

CVE-2026-5604Tenda CH22 Parameter CertLocalPrecreate formCertLocalPrecreate stack-based overflow

High 8.8

In plain English

A high-severity stack buffer overflow in CH22 from Tenda. Proof-of-concept exploit code is public. The chance it is exploited in the next 30 days is estimated at 0.7% (higher than 53% of all known vulnerabilities).

Severity (CVSS 3.1)8.8High

Exploit odds (30 days)0.7%top 47.4% of all CVEs

Exploited in the wildNo reportsCISA SSVC: poc

Attack toolingNoneno public tooling known

Official description

A security flaw has been discovered in Tenda CH22 1.0.0.1. The impacted element is the function formCertLocalPrecreate of the file /goform/CertLocalPrecreate of the component Parameter Handler. Performing a manipulation of the argument standard results in stack-based buffer overflow. Remote exploitation of the attack is possible. The exploit has been released to the public and may be used for attacks.

Affected products (as reported)

Vendor	Product	Versions
Tenda	CH22	1.0.0.1

Weakness: CWE-121, CWE-119 · 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

References

VDB-355396 | Tenda CH22 Parameter CertLocalPrecreate formCertLocalPrecreate stack-based overflow vdb-entry, technical-description
VDB-355396 | CTI Indicators (IOB, IOC, IOA) signature, permissions-required
Submit #785032 | Tenda CH22 V1.0.0.1 Stack-based Buffer Overflow third-party-advisory
https://github.com/Litengzheng/vuldb_new/blob/main/CH22/vul_52/README.md exploit
https://www.tenda.com.cn/ product