CVE-2025-66280 (GCVE-0-2025-66280)

Vulnerability from cvelistv5 – Published: 2026-06-10 03:05 – Updated: 2026-06-10 15:52
VLAI
Title
QTS, QuTS hero
Summary
An integer overflow or wraparound 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 compromise the security of the system. 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
Severity
5.1 (Medium)
CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:N/VI:L/VA:L/SC:N/SI:N/SA:N
SSVC
Exploitation: none Automatable: no Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
Assigner
References
Impacted products
Vendor Product Version
QNAP Systems Inc. QTS Affected: 5.2.0 , < 5.2.9.3410 build 20260214 (custom)
Create a notification for this product.
QNAP Systems Inc. QuTS hero Affected: h5.2.0 , < h5.2.9.3410 build 20260214 (custom)
Affected: h5.3.0 , < h5.3.4.3500 build 20260520 (custom)
Affected: ? , < h6.0.0.3397 build 20260206 (custom)
Create a notification for this product.
Credits
Bechir Bouali (@b3ch1r) from SecLab - TII
Show details on NVD website
To clipboard 

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Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

Sightings

Author Source Type Date Other

Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
  • Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
  • Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
  • Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.


Detection rules are retrieved from Rulezet.