Authenticated code execution via unchecked buffer copy
Published Feb 2, 2024 · Updated Jun 17, 2025
Buffer overflow in QNAP QTS 5.1.x, QuTS hero h5.1.x, and QuTScloud c5.x allows remote authenticated administrators to execute code. QNAP describes an unchecked-size buffer copy but has not disclosed the affected component, function, input field, or protocol message. Exploitation requires administrator authentication over a network and executes code in the affected service context.
Summary
What happened
Buffer overflow in QNAP QTS 5.1.x, QuTS hero h5.1.x, and QuTScloud c5.x allows remote authenticated administrators to execute code. QNAP describes an unchecked-size buffer copy but has not disclosed the affected component, function, input field, or protocol message. Exploitation requires administrator authentication over a network and executes code in the affected service context.
The record
- CVE
- CVE-2023-41276
- Published
- Feb 2, 2024
- Updated
- Jun 17, 2025
- Vendor
- Linn Products Limited
- Product
- QuTS hero
- Classifications
- CWE-122, CWE-120, T1210
- Attack vector
- network
- Privileges
- admin
Timeline
How it unfolded
- Feb 2, 2024CVE publishedPublication date reported by the CVE source.
- Jun 17, 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?
Compare these published version ranges with your installed build and any vendor patches.
- Affected versionversion=h5.1.x <h5.1.2.2534 build 20230927
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
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
No public exploit references are available in this record.
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Technologies
Your stack
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Your stack
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