Authenticated service crash via unchecked strcpy
Published Feb 20, 2026 · Updated Feb 20, 2026
Stack-based buffer overflow in D-Link DWR-M960 1.01.07 allows remote authenticated users to crash the web server via a crafted request. The sub_462E14 handler copies the request-controlled submit-url value into the fixed-size global wizard_htm buffer with strcpy and no length check. The path requires authentication and the save_apply parameter; an oversized value corrupts adjacent memory and crashes boa or reboots the router.
Summary
What happened
Stack-based buffer overflow in D-Link DWR-M960 1.01.07 allows remote authenticated users to crash the web server via a crafted request. The sub_462E14 handler copies the request-controlled submit-url value into the fixed-size global wizard_htm buffer with strcpy and no length check. The path requires authentication and the save_apply parameter; an oversized value corrupts adjacent memory and crashes boa or reboots the router.
The record
- CVE
- CVE-2026-2853
- Published
- Feb 20, 2026
- Updated
- Feb 20, 2026
- Vendor
- D-Link
- Product
- DWR-M960
- Classifications
- CWE-119, CWE-121, T1190
- Attack vector
- network
- Privileges
- authenticated
Timeline
How it unfolded
- Feb 20, 2026CVE publishedPublication date reported by the CVE source.
- Feb 20, 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=1.01.07
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
- DWR-M960 formSysLog oversized submit-url proof of conceptproof of concept · demonstrated
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Technologies
Your stack
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Your stack
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