Unauthenticated service interruption via unchecked destNet copy
Published Aug 30, 2026 · Updated Aug 30, 2026
Buffer overflow in Tenda HG10 300001138 Boa Web Server allows remote attackers to interrupt service via a crafted HTTP request. The formIPv6Routing handler passes the user-controlled destNet value to strcpy without checking its length against a fixed-size destination buffer. No authentication or user interaction is required; the demonstrated result is an unresponsive router, while code execution remains unverified.
Summary
What happened
Buffer overflow in Tenda HG10 300001138 Boa Web Server allows remote attackers to interrupt service via a crafted HTTP request. The formIPv6Routing handler passes the user-controlled destNet value to strcpy without checking its length against a fixed-size destination buffer. No authentication or user interaction is required; the demonstrated result is an unresponsive router, while code execution remains unverified.
The record
- CVE
- CVE-2026-82542
- Published
- Aug 30, 2026
- Updated
- Aug 30, 2026
- Vendor
- Shenzhen Tenda Technology Co., Ltd.
- Product
- HG10
- Classifications
- CWE-119, CWE-120, T1499
- Attack vector
- network
- Privileges
- unauthenticated
Timeline
How it unfolded
- Aug 30, 2026CVE publishedPublication date reported by the CVE source.
- Aug 30, 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?
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- Affected versionversion=300001138
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
- HG10 formIPv6Routing destNet denial-of-service proof of conceptproof of concept · demonstrated
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Technologies
Your stack
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Your stack
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