An out-of-bounds write vulnerability has been reported to affect several QNAP operating system versions. (CVE-2025-30273)
An out-of-bounds write vulnerability (CVE-2025-30273) affects several versions of QNAP operating systems. A remote attacker with a user account can exploit this flaw to modify or corrupt memory. The vulnerability has been fixed in QTS 5.2.5.3145 build 20250526 and later, and QuTS hero h5.2.5.3138 build 20250519 and later.
AI Analysis
Technical Summary
CVE-2025-30273 is an out-of-bounds write vulnerability in multiple QNAP operating system versions. This vulnerability allows a remote attacker who has obtained a user account to perform memory modification or corruption. The flaw is addressed by official patches released in QTS 5.2.5.3145 build 20250526 and QuTS hero h5.2.5.3138 build 20250519 and later.
Potential Impact
Exploitation requires a remote attacker to have a user account on the affected QNAP system. Successful exploitation can lead to modification or corruption of memory, impacting system integrity and availability. The CVSS v3.1 score is 8.1 (high), reflecting high impact on integrity and availability with low attack complexity and no user interaction required.
Mitigation Recommendations
Apply the official patches by upgrading to QTS 5.2.5.3145 build 20250526 or later, or QuTS hero h5.2.5.3138 build 20250519 or later. These versions contain the fix for this vulnerability. No additional mitigation is indicated by the vendor advisory.
An out-of-bounds write vulnerability has been reported to affect several QNAP operating system versions. (CVE-2025-30273)
Description
An out-of-bounds write vulnerability (CVE-2025-30273) affects several versions of QNAP operating systems. A remote attacker with a user account can exploit this flaw to modify or corrupt memory. The vulnerability has been fixed in QTS 5.2.5.3145 build 20250526 and later, and QuTS hero h5.2.5.3138 build 20250519 and later.
CVSS v3.1
Score 8.1high
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
CVE-2025-30273 is an out-of-bounds write vulnerability in multiple QNAP operating system versions. This vulnerability allows a remote attacker who has obtained a user account to perform memory modification or corruption. The flaw is addressed by official patches released in QTS 5.2.5.3145 build 20250526 and QuTS hero h5.2.5.3138 build 20250519 and later.
Potential Impact
Exploitation requires a remote attacker to have a user account on the affected QNAP system. Successful exploitation can lead to modification or corruption of memory, impacting system integrity and availability. The CVSS v3.1 score is 8.1 (high), reflecting high impact on integrity and availability with low attack complexity and no user interaction required.
Mitigation Recommendations
Apply the official patches by upgrading to QTS 5.2.5.3145 build 20250526 or later, or QuTS hero h5.2.5.3138 build 20250519 or later. These versions contain the fix for this vulnerability. No additional mitigation is indicated by the vendor advisory.
Technical Details
- Gcve Source
- db.gcve.eu
- Osv Id
- GHSA-2fcj-xjq4-c3h8
- Osv Schema Version
- 1.4.0
- Aliases
- ["CVE-2025-30273"]
- Database Specific Severity
- HIGH
- Cvss Version
- 3.1
- State
- PUBLISHED
Threat ID: 6ab74f38f7a7c54106e138e3
Added to database: 09/26/2026, 04:51:04 UTC
Last enriched: 09/26/2026, 04:59:52 UTC
Last updated: 09/27/2026, 02:40:53 UTC
Views: 14
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