A use of uninitialized variable 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 denial of service conditions, or modify control flow in unexpected ways. We have already fixed the vulnerability in the following versions: QTS 5.2.8.3332 build 20251128 and later QuTS hero h5.2.8.3321 build 20251117 and later
2026-02-11T13:15:56.447
2026-02-12T17:06:57.050
Analyzed
CVSSv3.1: 4.9 (MEDIUM)
| Type | Vendor | Product | Version/Range | Vulnerable? |
|---|---|---|---|---|
| Operating System | qnap | qts | 5.2.0.2737 | Yes |
| Operating System | qnap | qts | 5.2.0.2744 | Yes |
| Operating System | qnap | qts | 5.2.0.2782 | Yes |
| Operating System | qnap | qts | 5.2.0.2802 | Yes |
| Operating System | qnap | qts | 5.2.0.2823 | Yes |
| Operating System | qnap | qts | 5.2.0.2851 | Yes |
| Operating System | qnap | qts | 5.2.0.2860 | Yes |
| Operating System | qnap | qts | 5.2.1.2930 | Yes |
| Operating System | qnap | qts | 5.2.2.2950 | Yes |
| Operating System | qnap | qts | 5.2.3.3006 | Yes |
| Operating System | qnap | qts | 5.2.4.3070 | Yes |
| Operating System | qnap | qts | 5.2.4.3079 | Yes |
| Operating System | qnap | qts | 5.2.4.3092 | Yes |
| Operating System | qnap | qts | 5.2.5.3145 | Yes |
| Operating System | qnap | qts | 5.2.6.3195 | Yes |
| Operating System | qnap | qts | 5.2.6.3229 | Yes |
| Operating System | qnap | qts | 5.2.7.3256 | Yes |
| Operating System | qnap | qts | 5.2.7.3297 | Yes |
| Operating System | qnap | qts | 5.2.8.3332 | Yes |
| Operating System | qnap | quts_hero | h5.2.0.2737 | Yes |
| Operating System | qnap | quts_hero | h5.2.0.2782 | Yes |
| Operating System | qnap | quts_hero | h5.2.0.2789 | Yes |
| Operating System | qnap | quts_hero | h5.2.0.2802 | Yes |
| Operating System | qnap | quts_hero | h5.2.0.2823 | Yes |
| Operating System | qnap | quts_hero | h5.2.0.2851 | Yes |
| Operating System | qnap | quts_hero | h5.2.0.2860 | Yes |
| Operating System | qnap | quts_hero | h5.2.1.2929 | Yes |
| Operating System | qnap | quts_hero | h5.2.1.2940 | Yes |
| Operating System | qnap | quts_hero | h5.2.2.2952 | Yes |
| Operating System | qnap | quts_hero | h5.2.3.3006 | Yes |
| Operating System | qnap | quts_hero | h5.2.4.3070 | Yes |
| Operating System | qnap | quts_hero | h5.2.4.3079 | Yes |
| Operating System | qnap | quts_hero | h5.2.5.3138 | Yes |
| Operating System | qnap | quts_hero | h5.2.6.3195 | Yes |
| Operating System | qnap | quts_hero | h5.2.7.3256 | Yes |
| Operating System | qnap | quts_hero | h5.2.7.3297 | Yes |
| Operating System | qnap | quts_hero | h5.2.8.3321 | Yes |