High8.1QNAP
QTS: buffer overflow vulnerability has been reported to affect several QNAP operating system versions.
CVE-2025-52863 Published Jan 2, 2026Updated by vendor Jun 17, 2026
CVE-2025-52863
Affected products & platforms
QNAPUnclassified
Summary
A buffer overflow vulnerability has been reported to affect several QNAP operating system versions. If a remote attacker gains a user account, they can then exploit the vulnerability to modify memory or crash processes. We have already fixed the vulnerability in the following versions: QTS 5.2.7.3256 build 20250913 and later QuTS hero h5.2.7.3256 build 20250913 and later QuTS hero h5.3.0.3192 build 20250716 and later
Fixed versions
- QTS 5.2.x
Official advisory · high-confidence parse· fetched 3 hours ago·verify at source
Mitigation checklist
Recommended fix / mitigation
- Update the affected QNAP app / operating system to a fixed release: QTS 5.2.x.
Official advisory · high-confidence parse· fetched 3 hours ago·verify at source
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