CVE-2025-62858
Medium
Description
A buffer overflow vulnerability has been reported to affect several QNAP operating system versions. If a remote attacker gains an administrator account, they can then exploit the vulnerability to modify memory or crash processes. We have already fixed the vulnerability in the following versions: QTS 5.2.9.3410 build 20260214 and later QuTS hero h5.2.9.3410 build 20260214 and later QuTS hero h5.3.4.3500 build 20260520 and later QuTS hero h6.0.0.3397 build 20260206 and later
SeverityMedium
CVSS6.5
Exploit probability—
Product
Qnap Quts Hero
PublishedJun 9, 2026
First seenJun 9, 2026
Weakness typeCWE-121CWE-121
How to fix
Sources list no fixed version or patch link for this vulnerability.
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| qnap quts_hero | h5.2.0.2737, h5.2.0.2782, h5.2.0.2789, h5.2.0.2802, h5.2.0.2823, h5.2.0.2851, h5.2.0.2860, h5.2.1.2929, h5.2.1.2940, h5.2.2.2952, h5.2.3.3006, h5.2.4.3070, h5.2.4.3079, h5.2.5.3138, h5.2.6.3195, h5.2.7.3256, h5.2.7.3297, h5.2.8.3321, h5.2.8.3350, h5.2.8.3359, h5.3.0.3115, h5.3.0.3145, h5.3.0.3192, h5.3.1.3250, h5.3.1.3292, h5.3.2.3354, h5.3.3.3424, h6.0.0.3324, h6.0.0.3382 | — |
| qnap qts | 5.2.0.2737, 5.2.0.2744, 5.2.0.2782, 5.2.0.2802, 5.2.0.2823, 5.2.0.2851, 5.2.0.2860, 5.2.1.2930, 5.2.2.2950, 5.2.3.3006, 5.2.4.3070, 5.2.4.3079, 5.2.4.3092, 5.2.5.3145, 5.2.6.3195, 5.2.6.3229, 5.2.7.3256, 5.2.7.3297, 5.2.8.3332, 5.2.8.3350, 5.2.8.3359 | — |
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