Authenticated memory corruption via undisclosed buffer overflow
Published Jan 2, 2026 · Updated Jan 2, 2026
Buffer overflow in QNAP QTS and QuTS hero allows remote authenticated users to modify memory or crash processes over a network. QNAP has not disclosed the affected component, input vector, buffer operation, or missing bounds check that triggers the overflow. A valid user account is required; reported consequences are confined to process memory modification and process crashes, with no published code-execution claim.
Summary
What happened
Buffer overflow in QNAP QTS and QuTS hero allows remote authenticated users to modify memory or crash processes over a network. QNAP has not disclosed the affected component, input vector, buffer operation, or missing bounds check that triggers the overflow. A valid user account is required; reported consequences are confined to process memory modification and process crashes, with no published code-execution claim.
The record
- CVE
- CVE-2025-52872
- Published
- Jan 2, 2026
- Updated
- Jan 2, 2026
- Vendor
- Linn Products Limited
- Product
- QuTS hero
- Classifications
- CWE-120, CAPEC-100
- Attack vector
- network
- Privileges
- authenticated
Timeline
How it unfolded
- Jan 2, 2026CVE publishedPublication date reported by the CVE source.
- Jan 2, 2026Record 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=h5.2.x <h5.2.7.3256 build 20250913
- Affected versionversion=h5.3.x <h5.3.0.3192 build 20250716
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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