Unauthenticated process crash via unchecked strncpy length
Published Jun 9, 2026 · Updated Jun 9, 2026
Buffer overflow in Tenda W15E 15.11.0.10 allows remote attackers to crash the affected process via a crafted HTTP request. formAddWewifiWhiteUser passes an attacker-controlled substring length to strncpy when copying wewifiWhiteUserInfo into a fixed-size temporary buffer. No authentication or user interaction is required, and the documented consequence is a process crash or device instability rather than data disclosure or modification.
Summary
What happened
Buffer overflow in Tenda W15E 15.11.0.10 allows remote attackers to crash the affected process via a crafted HTTP request. formAddWewifiWhiteUser passes an attacker-controlled substring length to strncpy when copying wewifiWhiteUserInfo into a fixed-size temporary buffer. No authentication or user interaction is required, and the documented consequence is a process crash or device instability rather than data disclosure or modification.
The record
- CVE
- CVE-2026-36816
- Published
- Jun 9, 2026
- Updated
- Jun 9, 2026
- Vendor
- Unknown vendor
- Product
- Unknown product
- Classifications
- CWE-120, T1499.004
- Attack vector
- network
- Privileges
- unauthenticated
Timeline
How it unfolded
- Jun 9, 2026CVE publishedPublication date reported by the CVE source.
- Jun 9, 2026Record updatedLatest update available in the CVE record.
Exploitability
Present is not the same as exploitable
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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
- formAddWewifiWhiteUser crafted-request proof of conceptproof of concept · unverified
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Technologies
Your stack
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Your stack
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