Router crash or code execution via unchecked sprintf
Published Jul 18, 2025 · Updated Jul 18, 2025
Stack-based buffer overflow in Tenda FH451 1.0.0.9 allows remote authenticated users to crash the router or execute code. The fromP2pListFilter handler passes the user-controlled page value through v11 to sprintf without a length check, overflowing stack buffer s. Access to the router's HTTP management endpoint and valid credentials are required; successful exploitation interrupts service or runs attacker-controlled code.
Summary
What happened
Stack-based buffer overflow in Tenda FH451 1.0.0.9 allows remote authenticated users to crash the router or execute code. The fromP2pListFilter handler passes the user-controlled page value through v11 to sprintf without a length check, overflowing stack buffer s. Access to the router's HTTP management endpoint and valid credentials are required; successful exploitation interrupts service or runs attacker-controlled code.
The record
- CVE
- CVE-2025-7795
- Published
- Jul 18, 2025
- Updated
- Jul 18, 2025
- Vendor
- Shenzhen Tenda Technology Co., Ltd.
- Product
- FH451
- Classifications
- CWE-119, CWE-121, T1210
- Attack vector
- network
- Privileges
- authenticated
Timeline
How it unfolded
- Jul 18, 2025CVE publishedPublication date reported by the CVE source.
- Jul 18, 2025Record 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=1.0.0.9
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
- fromP2pListFilter HTTP proof of conceptproof of concept · unverified
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Technologies
Your stack
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Your stack
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