Authenticated code execution via unchecked usb_folder copy
Published Jul 15, 2025 · Updated Jul 15, 2025
Stack-based buffer overflow in NETGEAR XR300 firmware 1.0.3.38_10.3.30 allows remote authenticated users to execute code via HTTP. The sub_B7350 handler uses strcpy to copy a user-controlled usb_folder value of up to 2,048 bytes into the two-byte stack buffer v48 without bounds checking. Authentication to the router web interface is required; overwriting the return address grants program-counter control and code execution in the HTTPD process context.
Summary
What happened
Stack-based buffer overflow in NETGEAR XR300 firmware 1.0.3.38_10.3.30 allows remote authenticated users to execute code via HTTP. The sub_B7350 handler uses strcpy to copy a user-controlled usb_folder value of up to 2,048 bytes into the two-byte stack buffer v48 without bounds checking. Authentication to the router web interface is required; overwriting the return address grants program-counter control and code execution in the HTTPD process context.
The record
- CVE
- CVE-2025-52081
- Published
- Jul 15, 2025
- Updated
- Jul 15, 2025
- Vendor
- Unknown vendor
- Product
- Unknown product
- Classifications
- CWE-121, T1210
- Attack vector
- network
- Privileges
- authenticated
Timeline
How it unfolded
- Jul 15, 2025CVE publishedPublication date reported by the CVE source.
- Jul 15, 2025Record 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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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.
Public exploit references
- usb_folder HTTPD stack-overflow proof of conceptproof of concept · demonstrated
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Technologies
Your stack
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Your stack
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