Unauthenticated device initialization via stack buffer overflow
Published Jul 31, 2024 · Updated Sep 30, 2025
A stack-based buffer overflow in Dahua NVR4XXX and IPC-HX8XXX firmware allows remote attackers to initiate device initialization. The affected network interface writes crafted packet data beyond a stack buffer, but Dahua has not identified the interface or parsing routine. No authentication or user interaction is required; exploitation reinitializes the device and disrupts its configured operation.
Summary
What happened
A stack-based buffer overflow in Dahua NVR4XXX and IPC-HX8XXX firmware allows remote attackers to initiate device initialization. The affected network interface writes crafted packet data beyond a stack buffer, but Dahua has not identified the interface or parsing routine. No authentication or user interaction is required; exploitation reinitializes the device and disrupts its configured operation.
The record
- CVE
- CVE-2024-39950
- Published
- Jul 31, 2024
- Updated
- Sep 30, 2025
- Vendor
- Zhejiang Dahua Technology Co., Ltd.
- Product
- NVR4832-I
- Classifications
- CWE-20, CWE-121, T1499
- Attack vector
- network
- Privileges
- unauthenticated
Timeline
How it unfolded
- Jul 31, 2024CVE publishedPublication date reported by the CVE source.
- Sep 30, 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=0 <2024.2.2
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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