Router crash via unchecked onlineList buffer copy
Published Sep 10, 2025 · Updated Jul 5, 2026
Buffer overflow in the Tenda F3 parental-control handler allows remote attackers to crash the router via a crafted onlineList value. The setParentControl handler copies the request body's onlineList value into a destination buffer without checking whether the input fits. The network-accessible handler requires no authentication, and public evidence demonstrates a crash rather than code execution.
Summary
What happened
Buffer overflow in the Tenda F3 parental-control handler allows remote attackers to crash the router via a crafted onlineList value. The setParentControl handler copies the request body's onlineList value into a destination buffer without checking whether the input fits. The network-accessible handler requires no authentication, and public evidence demonstrates a crash rather than code execution.
The record
- CVE
- CVE-2025-57572
- Published
- Sep 10, 2025
- Updated
- Jul 5, 2026
- Vendor
- Unknown vendor
- Product
- Unknown product
- Classifications
- CWE-120, T1489
- Attack vector
- network
- Privileges
- unauthenticated
Timeline
How it unfolded
- Sep 10, 2025CVE publishedPublication date reported by the CVE source.
- Jul 5, 2026Record updatedLatest update available in the CVE record.
Exploitability
Present is not the same as exploitable
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What conditions does exploitation require?
What is affected?
Affected products and versions are unavailable in this record.
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
- HTTP POST crash proof of conceptproof of concept · unverified
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Technologies
Your stack
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Your stack
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