CVE-2026-5604 Details
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.
A stack-based buffer overflow vulnerability has been identified in the Tenda CH22 router, specifically in version 1.0.0.1. The issue arises in the 'formCertLocalPrecreate' function within the 'httpd' component, where user-supplied input in the 'standard' parameter is not properly validated before being passed to the 'sprintf' function. This lack of length checking allows for the overflow to occur, potentially leading to a denial-of-service condition or arbitrary code execution. The vulnerability can be exploited remotely, and a public exploit is available.
Metrics
CVSS 4.0 Severity and Vector Strings:
CVSS 3.x Severity and Vector Strings:
No data available for CVSS Version 2.0 on this CVE.
CISA-ADP
Assessed Apr 6, 2026References to Advisories, Solutions, and Tools
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| URL | Source(s) | Tag(s) |
|---|---|---|
| https://github.com/Litengzheng/vuldb_new/blob/main/CH22/vul_52/README.md | [email protected] | ExploitThird Party Advisory |
| https://vuldb.com/submit/785032 | [email protected] | Third Party Advisory |
| https://vuldb.com/vuln/355396 | [email protected] | Third Party Advisory |
| https://vuldb.com/vuln/355396/cti | [email protected] | Permissions Required |
| https://www.tenda.com.cn/ | [email protected] | Product |
Weakness Enumeration
| CWE-ID | CWE Name | Source |
|---|---|---|
| CWE-119 | Improper Restriction of Operations within the Bounds of a Memory Buffer | [email protected] |
| CWE-121 | Stack-based Buffer Overflow | [email protected] |
Affected Products
| Product | Versions |
|---|---|
| tenda ch22 firmware | 1.0.0.1 |
CPE
Remediation
| |
| tenda ch22 | All versions |
CPE
Remediation
| |
Change History
5 change records found show changes
| Date | Action | Recorded By |
|---|---|---|
| Jul 24, 2026 | CVE Translated | [email protected] |
| Jun 17, 2026 | CVE Modified | [email protected] |
| Jun 17, 2026 | CVE Modified | CISA-ADP |
| Apr 30, 2026 | Initial Analysis | [email protected] |
| Apr 5, 2026 | New CVE Received | [email protected] |