Read the docs
TI-2025-39011 Aliases CVE-2025-62858GHSA-prxr-642c-c266

Stack-based buffer overflow in QNAP QTS

Priority LOW 24CWE-121Published · Updated

Key facts

Attack vector
Network
Privileges required
High
User interaction
None
Attack complexity
Low
Attack requirements
None
Impact type
—
Confidentiality · integrity · availability
None · Low · Low
Fix status
Fixed

Attack profile from CVSS 4.0 · CNA. Fix status from CNA.

Summary

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

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00445 38th percentileScored 2026-11-07
Fix Fixed QTS (QNAP Systems Inc.): 5.2.9.3410 build 20260214QuTS hero (QNAP Systems Inc.): h5.2.9.3410 build 20260214, h5.3.4.3500 build 20260520, h6.0.0.3397 build 20260206

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
None
Automatable
No
Technical impact
Partial

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
QNAPQTS5.2.0 to before 5.2.9.3410 build 202602145.2.9.3410 build 20260214Patch availableCNA
QNAPQuTS heroh5.2.0 to before h5.2.9.3410 build 20260214; h5.3.0 to before h5.3.4.3500 build 20260520; ? to before h6.0.0.3397 build 20260206h5.2.9.3410 build 20260214, h5.3.4.3500 build 20260520, h6.0.0.3397 build 20260206Patch availableCNA
  • QTS VendorQNAP Affected 5.2.0 to before 5.2.9.3410 build 20260214 Fixed in 5.2.9.3410 build 20260214 Patch available CNA
  • QuTS hero VendorQNAP Affected h5.2.0 to before h5.2.9.3410 build 20260214; h5.3.0 to before h5.3.4.3500 build 20260520; ? to before h6.0.0.3397 build 20260206 Fixed in h5.2.9.3410 build 20260214, h5.3.4.3500 build 20260520, h6.0.0.3397 build 20260206 Patch available CNA

CPE configurations NVD · 50

CPEVersionsRoleVendor
cpe:2.3:o:qnap:qts:5.2.0.2737:build_20240417:*:*:*:*:*:*5.2.0.2737 build_20240417VulnerableQNAP
cpe:2.3:o:qnap:qts:5.2.0.2744:build_20240424:*:*:*:*:*:*5.2.0.2744 build_20240424VulnerableQNAP
cpe:2.3:o:qnap:qts:5.2.0.2782:build_20240601:*:*:*:*:*:*5.2.0.2782 build_20240601VulnerableQNAP
cpe:2.3:o:qnap:qts:5.2.0.2802:build_20240620:*:*:*:*:*:*5.2.0.2802 build_20240620VulnerableQNAP
cpe:2.3:o:qnap:qts:5.2.0.2823:build_20240711:*:*:*:*:*:*5.2.0.2823 build_20240711VulnerableQNAP
cpe:2.3:o:qnap:qts:5.2.0.2851:build_20240808:*:*:*:*:*:*5.2.0.2851 build_20240808VulnerableQNAP
cpe:2.3:o:qnap:qts:5.2.0.2860:build_20240817:*:*:*:*:*:*5.2.0.2860 build_20240817VulnerableQNAP
cpe:2.3:o:qnap:qts:5.2.1.2930:build_20241025:*:*:*:*:*:*5.2.1.2930 build_20241025VulnerableQNAP
cpe:2.3:o:qnap:qts:5.2.2.2950:build_20241114:*:*:*:*:*:*5.2.2.2950 build_20241114VulnerableQNAP
cpe:2.3:o:qnap:qts:5.2.3.3006:build_20250108:*:*:*:*:*:*5.2.3.3006 build_20250108VulnerableQNAP
  • cpe:2.3:o:qnap:qts:5.2.0.2737:build_20240417:*:*:*:*:*:* Versions 5.2.0.2737 build_20240417 Vulnerable ·QNAP
  • cpe:2.3:o:qnap:qts:5.2.0.2744:build_20240424:*:*:*:*:*:* Versions 5.2.0.2744 build_20240424 Vulnerable ·QNAP
  • cpe:2.3:o:qnap:qts:5.2.0.2782:build_20240601:*:*:*:*:*:* Versions 5.2.0.2782 build_20240601 Vulnerable ·QNAP
  • cpe:2.3:o:qnap:qts:5.2.0.2802:build_20240620:*:*:*:*:*:* Versions 5.2.0.2802 build_20240620 Vulnerable ·QNAP
  • cpe:2.3:o:qnap:qts:5.2.0.2823:build_20240711:*:*:*:*:*:* Versions 5.2.0.2823 build_20240711 Vulnerable ·QNAP
  • cpe:2.3:o:qnap:qts:5.2.0.2851:build_20240808:*:*:*:*:*:* Versions 5.2.0.2851 build_20240808 Vulnerable ·QNAP
  • cpe:2.3:o:qnap:qts:5.2.0.2860:build_20240817:*:*:*:*:*:* Versions 5.2.0.2860 build_20240817 Vulnerable ·QNAP
  • cpe:2.3:o:qnap:qts:5.2.1.2930:build_20241025:*:*:*:*:*:* Versions 5.2.1.2930 build_20241025 Vulnerable ·QNAP
  • cpe:2.3:o:qnap:qts:5.2.2.2950:build_20241114:*:*:*:*:*:* Versions 5.2.2.2950 build_20241114 Vulnerable ·QNAP
  • cpe:2.3:o:qnap:qts:5.2.3.3006:build_20250108:*:*:*:*:*:* Versions 5.2.3.3006 build_20250108 Vulnerable ·QNAP
Show 40 more CPE
CPEVersionsRoleVendor
cpe:2.3:o:qnap:qts:5.2.4.3070:build_20250312:*:*:*:*:*:*5.2.4.3070 build_20250312VulnerableQNAP
cpe:2.3:o:qnap:qts:5.2.4.3079:build_20250321:*:*:*:*:*:*5.2.4.3079 build_20250321VulnerableQNAP
cpe:2.3:o:qnap:qts:5.2.4.3092:build_20250403:*:*:*:*:*:*5.2.4.3092 build_20250403VulnerableQNAP
cpe:2.3:o:qnap:qts:5.2.5.3145:build_20250526:*:*:*:*:*:*5.2.5.3145 build_20250526VulnerableQNAP
cpe:2.3:o:qnap:qts:5.2.6.3195:build_20250715:*:*:*:*:*:*5.2.6.3195 build_20250715VulnerableQNAP
cpe:2.3:o:qnap:qts:5.2.6.3229:build_20250818:*:*:*:*:*:*5.2.6.3229 build_20250818VulnerableQNAP
cpe:2.3:o:qnap:qts:5.2.7.3256:build_20250913:*:*:*:*:*:*5.2.7.3256 build_20250913VulnerableQNAP
cpe:2.3:o:qnap:qts:5.2.7.3297:build_20251024:*:*:*:*:*:*5.2.7.3297 build_20251024VulnerableQNAP
cpe:2.3:o:qnap:qts:5.2.8.3332:build_20251128:*:*:*:*:*:*5.2.8.3332 build_20251128VulnerableQNAP
cpe:2.3:o:qnap:qts:5.2.8.3350:build_20251216:*:*:*:*:*:*5.2.8.3350 build_20251216VulnerableQNAP
cpe:2.3:o:qnap:qts:5.2.8.3359:build_20251225:*:*:*:*:*:*5.2.8.3359 build_20251225VulnerableQNAP
cpe:2.3:o:qnap:quts_hero:h5.2.0.2737:build_20240417:*:*:*:*:*:*h5.2.0.2737 build_20240417VulnerableQNAP
cpe:2.3:o:qnap:quts_hero:h5.2.0.2782:build_20240601:*:*:*:*:*:*h5.2.0.2782 build_20240601VulnerableQNAP
cpe:2.3:o:qnap:quts_hero:h5.2.0.2789:build_20240607:*:*:*:*:*:*h5.2.0.2789 build_20240607VulnerableQNAP
cpe:2.3:o:qnap:quts_hero:h5.2.0.2802:build_20240620:*:*:*:*:*:*h5.2.0.2802 build_20240620VulnerableQNAP
cpe:2.3:o:qnap:quts_hero:h5.2.0.2823:build_20240711:*:*:*:*:*:*h5.2.0.2823 build_20240711VulnerableQNAP
cpe:2.3:o:qnap:quts_hero:h5.2.0.2851:build_20240808:*:*:*:*:*:*h5.2.0.2851 build_20240808VulnerableQNAP
cpe:2.3:o:qnap:quts_hero:h5.2.0.2860:build_20240817:*:*:*:*:*:*h5.2.0.2860 build_20240817VulnerableQNAP
cpe:2.3:o:qnap:quts_hero:h5.2.1.2929:build_20241025:*:*:*:*:*:*h5.2.1.2929 build_20241025VulnerableQNAP
cpe:2.3:o:qnap:quts_hero:h5.2.1.2940:build_20241105:*:*:*:*:*:*h5.2.1.2940 build_20241105VulnerableQNAP
cpe:2.3:o:qnap:quts_hero:h5.2.2.2952:build_20241116:*:*:*:*:*:*h5.2.2.2952 build_20241116VulnerableQNAP
cpe:2.3:o:qnap:quts_hero:h5.2.3.3006:build_20250108:*:*:*:*:*:*h5.2.3.3006 build_20250108VulnerableQNAP
cpe:2.3:o:qnap:quts_hero:h5.2.4.3070:build_20250312:*:*:*:*:*:*h5.2.4.3070 build_20250312VulnerableQNAP
cpe:2.3:o:qnap:quts_hero:h5.2.4.3079:build_20250321:*:*:*:*:*:*h5.2.4.3079 build_20250321VulnerableQNAP
cpe:2.3:o:qnap:quts_hero:h5.2.5.3138:build_20250519:*:*:*:*:*:*h5.2.5.3138 build_20250519VulnerableQNAP
cpe:2.3:o:qnap:quts_hero:h5.2.6.3195:build_20250715:*:*:*:*:*:*h5.2.6.3195 build_20250715VulnerableQNAP
cpe:2.3:o:qnap:quts_hero:h5.2.7.3256:build_20250913:*:*:*:*:*:*h5.2.7.3256 build_20250913VulnerableQNAP
cpe:2.3:o:qnap:quts_hero:h5.2.7.3297:build_20251024:*:*:*:*:*:*h5.2.7.3297 build_20251024VulnerableQNAP
cpe:2.3:o:qnap:quts_hero:h5.2.8.3321:build_20251117:*:*:*:*:*:*h5.2.8.3321 build_20251117VulnerableQNAP
cpe:2.3:o:qnap:quts_hero:h5.2.8.3350:build_20251216:*:*:*:*:*:*h5.2.8.3350 build_20251216VulnerableQNAP
cpe:2.3:o:qnap:quts_hero:h5.2.8.3359:build_20251225:*:*:*:*:*:*h5.2.8.3359 build_20251225VulnerableQNAP
cpe:2.3:o:qnap:quts_hero:h5.3.0.3115:build_20250430:*:*:*:*:*:*h5.3.0.3115 build_20250430VulnerableQNAP
cpe:2.3:o:qnap:quts_hero:h5.3.0.3145:build_20250530:*:*:*:*:*:*h5.3.0.3145 build_20250530VulnerableQNAP
cpe:2.3:o:qnap:quts_hero:h5.3.0.3192:build_20250716:*:*:*:*:*:*h5.3.0.3192 build_20250716VulnerableQNAP
cpe:2.3:o:qnap:quts_hero:h5.3.1.3250:build_20250912:*:*:*:*:*:*h5.3.1.3250 build_20250912VulnerableQNAP
cpe:2.3:o:qnap:quts_hero:h5.3.1.3292:build_20251024:*:*:*:*:*:*h5.3.1.3292 build_20251024VulnerableQNAP
cpe:2.3:o:qnap:quts_hero:h5.3.2.3354:build_20251225:*:*:*:*:*:*h5.3.2.3354 build_20251225VulnerableQNAP
cpe:2.3:o:qnap:quts_hero:h5.3.3.3424:build_20260305:*:*:*:*:*:*h5.3.3.3424 build_20260305VulnerableQNAP
cpe:2.3:o:qnap:quts_hero:h6.0.0.3324:build_20251125:*:*:*:*:*:*h6.0.0.3324 build_20251125VulnerableQNAP
cpe:2.3:o:qnap:quts_hero:h6.0.0.3382:build_20260122:*:*:*:*:*:*h6.0.0.3382 build_20260122VulnerableQNAP
  • cpe:2.3:o:qnap:qts:5.2.4.3070:build_20250312:*:*:*:*:*:* Versions 5.2.4.3070 build_20250312 Vulnerable ·QNAP
  • cpe:2.3:o:qnap:qts:5.2.4.3079:build_20250321:*:*:*:*:*:* Versions 5.2.4.3079 build_20250321 Vulnerable ·QNAP
  • cpe:2.3:o:qnap:qts:5.2.4.3092:build_20250403:*:*:*:*:*:* Versions 5.2.4.3092 build_20250403 Vulnerable ·QNAP
  • cpe:2.3:o:qnap:qts:5.2.5.3145:build_20250526:*:*:*:*:*:* Versions 5.2.5.3145 build_20250526 Vulnerable ·QNAP
  • cpe:2.3:o:qnap:qts:5.2.6.3195:build_20250715:*:*:*:*:*:* Versions 5.2.6.3195 build_20250715 Vulnerable ·QNAP
  • cpe:2.3:o:qnap:qts:5.2.6.3229:build_20250818:*:*:*:*:*:* Versions 5.2.6.3229 build_20250818 Vulnerable ·QNAP
  • cpe:2.3:o:qnap:qts:5.2.7.3256:build_20250913:*:*:*:*:*:* Versions 5.2.7.3256 build_20250913 Vulnerable ·QNAP
  • cpe:2.3:o:qnap:qts:5.2.7.3297:build_20251024:*:*:*:*:*:* Versions 5.2.7.3297 build_20251024 Vulnerable ·QNAP
  • cpe:2.3:o:qnap:qts:5.2.8.3332:build_20251128:*:*:*:*:*:* Versions 5.2.8.3332 build_20251128 Vulnerable ·QNAP
  • cpe:2.3:o:qnap:qts:5.2.8.3350:build_20251216:*:*:*:*:*:* Versions 5.2.8.3350 build_20251216 Vulnerable ·QNAP
  • cpe:2.3:o:qnap:qts:5.2.8.3359:build_20251225:*:*:*:*:*:* Versions 5.2.8.3359 build_20251225 Vulnerable ·QNAP
  • cpe:2.3:o:qnap:quts_hero:h5.2.0.2737:build_20240417:*:*:*:*:*:* Versions h5.2.0.2737 build_20240417 Vulnerable ·QNAP
  • cpe:2.3:o:qnap:quts_hero:h5.2.0.2782:build_20240601:*:*:*:*:*:* Versions h5.2.0.2782 build_20240601 Vulnerable ·QNAP
  • cpe:2.3:o:qnap:quts_hero:h5.2.0.2789:build_20240607:*:*:*:*:*:* Versions h5.2.0.2789 build_20240607 Vulnerable ·QNAP
  • cpe:2.3:o:qnap:quts_hero:h5.2.0.2802:build_20240620:*:*:*:*:*:* Versions h5.2.0.2802 build_20240620 Vulnerable ·QNAP
  • cpe:2.3:o:qnap:quts_hero:h5.2.0.2823:build_20240711:*:*:*:*:*:* Versions h5.2.0.2823 build_20240711 Vulnerable ·QNAP
  • cpe:2.3:o:qnap:quts_hero:h5.2.0.2851:build_20240808:*:*:*:*:*:* Versions h5.2.0.2851 build_20240808 Vulnerable ·QNAP
  • cpe:2.3:o:qnap:quts_hero:h5.2.0.2860:build_20240817:*:*:*:*:*:* Versions h5.2.0.2860 build_20240817 Vulnerable ·QNAP
  • cpe:2.3:o:qnap:quts_hero:h5.2.1.2929:build_20241025:*:*:*:*:*:* Versions h5.2.1.2929 build_20241025 Vulnerable ·QNAP
  • cpe:2.3:o:qnap:quts_hero:h5.2.1.2940:build_20241105:*:*:*:*:*:* Versions h5.2.1.2940 build_20241105 Vulnerable ·QNAP
  • cpe:2.3:o:qnap:quts_hero:h5.2.2.2952:build_20241116:*:*:*:*:*:* Versions h5.2.2.2952 build_20241116 Vulnerable ·QNAP
  • cpe:2.3:o:qnap:quts_hero:h5.2.3.3006:build_20250108:*:*:*:*:*:* Versions h5.2.3.3006 build_20250108 Vulnerable ·QNAP
  • cpe:2.3:o:qnap:quts_hero:h5.2.4.3070:build_20250312:*:*:*:*:*:* Versions h5.2.4.3070 build_20250312 Vulnerable ·QNAP
  • cpe:2.3:o:qnap:quts_hero:h5.2.4.3079:build_20250321:*:*:*:*:*:* Versions h5.2.4.3079 build_20250321 Vulnerable ·QNAP
  • cpe:2.3:o:qnap:quts_hero:h5.2.5.3138:build_20250519:*:*:*:*:*:* Versions h5.2.5.3138 build_20250519 Vulnerable ·QNAP
  • cpe:2.3:o:qnap:quts_hero:h5.2.6.3195:build_20250715:*:*:*:*:*:* Versions h5.2.6.3195 build_20250715 Vulnerable ·QNAP
  • cpe:2.3:o:qnap:quts_hero:h5.2.7.3256:build_20250913:*:*:*:*:*:* Versions h5.2.7.3256 build_20250913 Vulnerable ·QNAP
  • cpe:2.3:o:qnap:quts_hero:h5.2.7.3297:build_20251024:*:*:*:*:*:* Versions h5.2.7.3297 build_20251024 Vulnerable ·QNAP
  • cpe:2.3:o:qnap:quts_hero:h5.2.8.3321:build_20251117:*:*:*:*:*:* Versions h5.2.8.3321 build_20251117 Vulnerable ·QNAP
  • cpe:2.3:o:qnap:quts_hero:h5.2.8.3350:build_20251216:*:*:*:*:*:* Versions h5.2.8.3350 build_20251216 Vulnerable ·QNAP
  • cpe:2.3:o:qnap:quts_hero:h5.2.8.3359:build_20251225:*:*:*:*:*:* Versions h5.2.8.3359 build_20251225 Vulnerable ·QNAP
  • cpe:2.3:o:qnap:quts_hero:h5.3.0.3115:build_20250430:*:*:*:*:*:* Versions h5.3.0.3115 build_20250430 Vulnerable ·QNAP
  • cpe:2.3:o:qnap:quts_hero:h5.3.0.3145:build_20250530:*:*:*:*:*:* Versions h5.3.0.3145 build_20250530 Vulnerable ·QNAP
  • cpe:2.3:o:qnap:quts_hero:h5.3.0.3192:build_20250716:*:*:*:*:*:* Versions h5.3.0.3192 build_20250716 Vulnerable ·QNAP
  • cpe:2.3:o:qnap:quts_hero:h5.3.1.3250:build_20250912:*:*:*:*:*:* Versions h5.3.1.3250 build_20250912 Vulnerable ·QNAP
  • cpe:2.3:o:qnap:quts_hero:h5.3.1.3292:build_20251024:*:*:*:*:*:* Versions h5.3.1.3292 build_20251024 Vulnerable ·QNAP
  • cpe:2.3:o:qnap:quts_hero:h5.3.2.3354:build_20251225:*:*:*:*:*:* Versions h5.3.2.3354 build_20251225 Vulnerable ·QNAP
  • cpe:2.3:o:qnap:quts_hero:h5.3.3.3424:build_20260305:*:*:*:*:*:* Versions h5.3.3.3424 build_20260305 Vulnerable ·QNAP
  • cpe:2.3:o:qnap:quts_hero:h6.0.0.3324:build_20251125:*:*:*:*:*:* Versions h6.0.0.3324 build_20251125 Vulnerable ·QNAP
  • cpe:2.3:o:qnap:quts_hero:h6.0.0.3382:build_20260122:*:*:*:*:*:* Versions h6.0.0.3382 build_20260122 Vulnerable ·QNAP

Remediation

  • Fix · CNA QTS (QNAP Systems Inc.) Fixed in 5.2.9.3410 build 20260214
  • Fix · CNA QuTS hero (QNAP Systems Inc.) Fixed in h5.2.9.3410 build 20260214, h5.3.4.3500 build 20260520, h6.0.0.3397 build 20260206

Timeline

  1. 2026-10-02 Threatist record created from CVE-2025-62858
  2. 2026-10-03 Alias added: GHSA-prxr-642c-c266

References

Other 1

  • TI-2020-02221 Command Injection Vulnerability in QTS and QuTS hero KEVCVSS 3.1CRITICAL 9.8
  • TI-2019-05101 Improper input validation in QNAP NAS devices KEVCVSS 3.1CRITICAL 9.8
  • TI-2018-14137 Improper input validation in QNAP QTS KEVCVSS 3.1CRITICAL 9.8
  • TI-2014-05975 GNU Bash through 4.3 bash43-025 processes trailing strings after certain malformed… KEVCVSS 3.1CRITICAL 9.8
  • TI-2014-05157 GNU Bash through 4.3 processes trailing strings after function definitions in the values… KEVCVSS 3.1CRITICAL 9.8
  • TI-2018-14131 Cross-site scripting in QNAP QTS KEVCVSS 3.1HIGH 8.0
See all 282 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences