Authenticated memory corruption via unchecked strcpy
Published May 10, 2026 · Updated May 10, 2026
Stack-based buffer overflow in EFM Networks ipTIME A8004T 14.18.2 allows remote authenticated users to corrupt memory via Wi-Fi settings. The formWifiBasicSet function copies the POST security_5g value with strcpy into a fixed 256-byte stack buffer without checking its length. The CNA assessment requires low privileges, while the published PoC claims no authentication; exploitation can crash the web server or redirect execution.
Summary
What happened
Stack-based buffer overflow in EFM Networks ipTIME A8004T 14.18.2 allows remote authenticated users to corrupt memory via Wi-Fi settings. The formWifiBasicSet function copies the POST security_5g value with strcpy into a fixed 256-byte stack buffer without checking its length. The CNA assessment requires low privileges, while the published PoC claims no authentication; exploitation can crash the web server or redirect execution.
The record
- CVE
- CVE-2026-8234
- Published
- May 10, 2026
- Updated
- May 10, 2026
- Vendor
- EFM Networks
- Product
- ipTIME A8004T
- Classifications
- CWE-121, CWE-119, T1190
- Attack vector
- network
- Privileges
- authenticated
Timeline
How it unfolded
- May 10, 2026CVE publishedPublication date reported by the CVE source.
- May 10, 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?
Compare these published version ranges with your installed build and any vendor patches.
- Affected versionversion=14.18.2
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
- A8004T WifiBasicSet Python PoCproof of concept · demonstrated
Labels summarize the accepted research assessment. They do not indicate a test against your environment.
Technologies
Your stack
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Your stack
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