Authenticated device compromise via Name buffer overflow
Published Jul 13, 2026 · Updated Jul 13, 2026
Buffer overflow in Tenda CH22 1.0.0.1 allows remote authenticated users to compromise the device through a crafted Name argument. The formCertListInfo handler processes Name at /goform/CertListInfo, but public records omit the overflowing buffer and exact unsafe operation. Low-privileged access is required, and successful exploitation can take total control of the affected router.
Summary
What happened
Buffer overflow in Tenda CH22 1.0.0.1 allows remote authenticated users to compromise the device through a crafted Name argument. The formCertListInfo handler processes Name at /goform/CertListInfo, but public records omit the overflowing buffer and exact unsafe operation. Low-privileged access is required, and successful exploitation can take total control of the affected router.
The record
- CVE
- CVE-2026-15543
- Published
- Jul 13, 2026
- Updated
- Jul 13, 2026
- Vendor
- Shenzhen Tenda Technology Co., Ltd.
- Product
- CH22 Firmware
- Classifications
- CWE-120, CWE-119, T1190
- Attack vector
- network
- Privileges
- authenticated
Timeline
How it unfolded
- Jul 13, 2026CVE publishedPublication date reported by the CVE source.
- Jul 13, 2026Record updatedLatest update available in the CVE record.
Exploitability
Present is not the same as exploitable
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Is a vulnerable build present?
Compare these published version ranges with your installed build and any vendor patches.
- Affected versionversion=1.0.0.1
What conditions does exploitation require?
What is affected?
Published CVSS scores
CVSS describes severity. EPSS estimates exploitation probability.
Attacks
What attackers are doing with it
Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.
Weakness, pattern, technique
Public exploit references
- Tenda CH22 formCertListInfo proof of conceptproof of concept · unverified
Labels summarize the accepted research assessment. They do not indicate a test against your environment.
Technologies
Your stack
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Your stack
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