Memory corruption via oversized host parameter
Published Apr 30, 2025 · Updated May 2, 2025
Buffer overflow in NETGEAR EX6120 firmware 1.0.3.94 allows remote authenticated users to corrupt memory through the host parameter. The sub_30394 function processes the host value without enforcing the destination buffer bounds, so an oversized value overwrites adjacent memory. The request requires an authenticated low-privilege session, and public evidence does not establish whether exploitation yields code execution or a device crash.
Summary
What happened
Buffer overflow in NETGEAR EX6120 firmware 1.0.3.94 allows remote authenticated users to corrupt memory through the host parameter. The sub_30394 function processes the host value without enforcing the destination buffer bounds, so an oversized value overwrites adjacent memory. The request requires an authenticated low-privilege session, and public evidence does not establish whether exploitation yields code execution or a device crash.
The record
- CVE
- CVE-2025-4140
- Published
- Apr 30, 2025
- Updated
- May 2, 2025
- Vendor
- NETGEAR
- Product
- EX6120
- Classifications
- CWE-120, CWE-119
- Attack vector
- network
- Privileges
- authenticated
Timeline
How it unfolded
- Apr 30, 2025CVE publishedPublication date reported by the CVE source.
- May 2, 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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- Affected versionversion=1.0.3.94
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
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Weakness, pattern, technique
Public exploit references
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Technologies
Your stack
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Your stack
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