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Vulnerabilities
Vulnerable Software

Vulnerability Details CVE-2025-66281

A NULL pointer dereference vulnerability has been reported to affect several QNAP operating system versions. The remote attackers can then exploit the vulnerability to launch a denial-of-service (DoS) attack. 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
Exploit prediction scoring system (EPSS) score
EPSS Score 0.003
EPSS Ranking 25.1%
CVSS Severity
CVSS v3 Score 7.2
Products affected by CVE-2025-66281
  • Qnap » Qts » Version: 5.2.0.2737
    cpe:2.3:o:qnap:qts:5.2.0.2737
  • Qnap » Qts » Version: 5.2.0.2744
    cpe:2.3:o:qnap:qts:5.2.0.2744
  • Qnap » Qts » Version: 5.2.0.2782
    cpe:2.3:o:qnap:qts:5.2.0.2782
  • Qnap » Qts » Version: 5.2.0.2802
    cpe:2.3:o:qnap:qts:5.2.0.2802
  • Qnap » Qts » Version: 5.2.0.2823
    cpe:2.3:o:qnap:qts:5.2.0.2823
  • Qnap » Qts » Version: 5.2.0.2851
    cpe:2.3:o:qnap:qts:5.2.0.2851
  • Qnap » Qts » Version: 5.2.0.2860
    cpe:2.3:o:qnap:qts:5.2.0.2860
  • Qnap » Qts » Version: 5.2.1.2930
    cpe:2.3:o:qnap:qts:5.2.1.2930
  • Qnap » Qts » Version: 5.2.2.2950
    cpe:2.3:o:qnap:qts:5.2.2.2950
  • Qnap » Qts » Version: 5.2.3.3006
    cpe:2.3:o:qnap:qts:5.2.3.3006
  • Qnap » Qts » Version: 5.2.4.3070
    cpe:2.3:o:qnap:qts:5.2.4.3070
  • Qnap » Qts » Version: 5.2.4.3079
    cpe:2.3:o:qnap:qts:5.2.4.3079
  • Qnap » Qts » Version: 5.2.4.3092
    cpe:2.3:o:qnap:qts:5.2.4.3092
  • Qnap » Qts » Version: 5.2.5.3145
    cpe:2.3:o:qnap:qts:5.2.5.3145
  • Qnap » Qts » Version: 5.2.6.3195
    cpe:2.3:o:qnap:qts:5.2.6.3195
  • Qnap » Qts » Version: 5.2.6.3229
    cpe:2.3:o:qnap:qts:5.2.6.3229
  • Qnap » Qts » Version: 5.2.7.3256
    cpe:2.3:o:qnap:qts:5.2.7.3256
  • Qnap » Qts » Version: 5.2.7.3297
    cpe:2.3:o:qnap:qts:5.2.7.3297
  • Qnap » Qts » Version: 5.2.8.3332
    cpe:2.3:o:qnap:qts:5.2.8.3332
  • Qnap » Qts » Version: 5.2.8.3350
    cpe:2.3:o:qnap:qts:5.2.8.3350
  • Qnap » Qts » Version: 5.2.8.3359
    cpe:2.3:o:qnap:qts:5.2.8.3359
  • Qnap » Quts Hero » Version: h5.2.0.2737
    cpe:2.3:o:qnap:quts_hero:h5.2.0.2737
  • Qnap » Quts Hero » Version: h5.2.0.2782
    cpe:2.3:o:qnap:quts_hero:h5.2.0.2782
  • Qnap » Quts Hero » Version: h5.2.0.2789
    cpe:2.3:o:qnap:quts_hero:h5.2.0.2789
  • Qnap » Quts Hero » Version: h5.2.0.2802
    cpe:2.3:o:qnap:quts_hero:h5.2.0.2802
  • Qnap » Quts Hero » Version: h5.2.0.2823
    cpe:2.3:o:qnap:quts_hero:h5.2.0.2823
  • Qnap » Quts Hero » Version: h5.2.0.2851
    cpe:2.3:o:qnap:quts_hero:h5.2.0.2851
  • Qnap » Quts Hero » Version: h5.2.0.2860
    cpe:2.3:o:qnap:quts_hero:h5.2.0.2860
  • Qnap » Quts Hero » Version: h5.2.1.2929
    cpe:2.3:o:qnap:quts_hero:h5.2.1.2929
  • Qnap » Quts Hero » Version: h5.2.1.2940
    cpe:2.3:o:qnap:quts_hero:h5.2.1.2940
  • Qnap » Quts Hero » Version: h5.2.2.2952
    cpe:2.3:o:qnap:quts_hero:h5.2.2.2952
  • Qnap » Quts Hero » Version: h5.2.3.3006
    cpe:2.3:o:qnap:quts_hero:h5.2.3.3006
  • Qnap » Quts Hero » Version: h5.2.4.3070
    cpe:2.3:o:qnap:quts_hero:h5.2.4.3070
  • Qnap » Quts Hero » Version: h5.2.4.3079
    cpe:2.3:o:qnap:quts_hero:h5.2.4.3079
  • Qnap » Quts Hero » Version: h5.2.5.3138
    cpe:2.3:o:qnap:quts_hero:h5.2.5.3138
  • Qnap » Quts Hero » Version: h5.2.6.3195
    cpe:2.3:o:qnap:quts_hero:h5.2.6.3195
  • Qnap » Quts Hero » Version: h5.2.7.3256
    cpe:2.3:o:qnap:quts_hero:h5.2.7.3256
  • Qnap » Quts Hero » Version: h5.2.7.3297
    cpe:2.3:o:qnap:quts_hero:h5.2.7.3297
  • Qnap » Quts Hero » Version: h5.2.8.3321
    cpe:2.3:o:qnap:quts_hero:h5.2.8.3321
  • Qnap » Quts Hero » Version: h5.2.8.3350
    cpe:2.3:o:qnap:quts_hero:h5.2.8.3350
  • Qnap » Quts Hero » Version: h5.2.8.3359
    cpe:2.3:o:qnap:quts_hero:h5.2.8.3359
  • Qnap » Quts Hero » Version: h5.3.0.3115
    cpe:2.3:o:qnap:quts_hero:h5.3.0.3115
  • Qnap » Quts Hero » Version: h5.3.0.3145
    cpe:2.3:o:qnap:quts_hero:h5.3.0.3145
  • Qnap » Quts Hero » Version: h5.3.0.3192
    cpe:2.3:o:qnap:quts_hero:h5.3.0.3192
  • Qnap » Quts Hero » Version: h5.3.1.3250
    cpe:2.3:o:qnap:quts_hero:h5.3.1.3250
  • Qnap » Quts Hero » Version: h5.3.1.3292
    cpe:2.3:o:qnap:quts_hero:h5.3.1.3292
  • Qnap » Quts Hero » Version: h5.3.2.3354
    cpe:2.3:o:qnap:quts_hero:h5.3.2.3354
  • Qnap » Quts Hero » Version: h5.3.3.3424
    cpe:2.3:o:qnap:quts_hero:h5.3.3.3424
  • Qnap » Quts Hero » Version: h6.0.0.3324
    cpe:2.3:o:qnap:quts_hero:h6.0.0.3324
  • Qnap » Quts Hero » Version: h6.0.0.3382
    cpe:2.3:o:qnap:quts_hero:h6.0.0.3382


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