Unauthenticated remote code execution via Basic Auth overflow
Published Aug 13, 2025 · Updated Aug 13, 2025
Stack-based buffer overflow in INSTAR 2K+ and 4K Cameras 3.11.1 Build 1124 allows remote attackers to execute arbitrary commands. fcgi_server decodes an HTTP Basic Authorization header and uses memcpy to copy the result into a 516-byte stack buffer without checking its length. No authentication or user interaction is required, and the root-privileged service grants full control of the camera after successful exploitation.
Summary
What happened
Stack-based buffer overflow in INSTAR 2K+ and 4K Cameras 3.11.1 Build 1124 allows remote attackers to execute arbitrary commands. fcgi_server decodes an HTTP Basic Authorization header and uses memcpy to copy the result into a 516-byte stack buffer without checking its length. No authentication or user interaction is required, and the root-privileged service grants full control of the camera after successful exploitation.
The record
- CVE
- CVE-2025-8760
- Published
- Aug 13, 2025
- Updated
- Aug 13, 2025
- Vendor
- INSTAR Deutschland GmbH
- Product
- INSTAR 4K Cameras
- Classifications
- CWE-121, CWE-120, CWE-119, T1190
- Attack vector
- network
- Privileges
- unauthenticated
Timeline
How it unfolded
- Aug 13, 2025CVE publishedPublication date reported by the CVE source.
- Aug 13, 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=3.11.1 Build 1124
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
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Technologies
Your stack
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Your stack
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