Authenticated memory corruption via unbounded GO parameter
Published Apr 12, 2026 · Updated Apr 12, 2026
Stack-based buffer overflow in Tenda F451 1.0.0.7 allows remote authenticated users to corrupt httpd memory through a crafted GO parameter. The WrlclientSet function processes the attacker-controlled GO value without enforcing the destination stack buffer's bounds. Low-privilege access to the network-facing handler is required; successful exploitation permits reading or altering router data or crashing httpd.
Summary
What happened
Stack-based buffer overflow in Tenda F451 1.0.0.7 allows remote authenticated users to corrupt httpd memory through a crafted GO parameter. The WrlclientSet function processes the attacker-controlled GO value without enforcing the destination stack buffer's bounds. Low-privilege access to the network-facing handler is required; successful exploitation permits reading or altering router data or crashing httpd.
The record
- CVE
- CVE-2026-6121
- Published
- Apr 12, 2026
- Updated
- Apr 12, 2026
- Vendor
- Shenzhen Tenda Technology Co., Ltd.
- Product
- F451
- Classifications
- CWE-121, CWE-119, T1190
- Attack vector
- network
- Privileges
- authenticated
Timeline
How it unfolded
- Apr 12, 2026CVE publishedPublication date reported by the CVE source.
- Apr 12, 2026Record updatedLatest update available in the CVE record.
Exploitability
Present is not the same as exploitable
Compare your product and version with the public record. A matching version still requires validation against your environment.
Is a vulnerable build present?
Compare these published version ranges with your installed build and any vendor patches.
- Affected versionversion=1.0.0.7
What conditions does exploitation require?
What is affected?
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
No public exploit references are available in this record.
Labels summarize the accepted research assessment. They do not indicate a test against your environment.
Technologies
Your stack
See the directory against your own environment.
Your stack
Check the software in your environment
Book a demo to see how Hinoki identifies affected software and validates exploitability in your environment.
Book a demo