CVE-2025-66277 (GCVE-0-2025-66277)

Vulnerability from cvelistv5 – Published: 2026-02-11 12:15 – Updated: 2026-02-12 04:55
VLAI?
Title
QTS, QuTS hero
Summary
A link following vulnerability has been reported to affect several QNAP operating system versions. The remote attackers can then exploit the vulnerability to traverse the file system to unintended locations. We have already fixed the vulnerability in the following versions: QTS 5.2.8.3350 build 20251216 and later QuTS hero h5.3.2.3354 build 20251225 and later QuTS hero h5.2.8.3350 build 20251216 and later
Severity ?
9.2 (Critical)
CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
CWE
Assigner
References
Impacted products
Vendor Product Version
QNAP Systems Inc. QTS Affected: 5.2.x , < 5.2.8.3350 build 20251216 (custom)
Create a notification for this product.
    QNAP Systems Inc. QuTS hero Affected: h5.3.x , < h5.3.2.3354 build 20251225 (custom)
Affected: h5.2.x , < h5.2.8.3350 build 20251216 (custom)
Create a notification for this product.
Credits
coral
Show details on NVD website
To clipboard 

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      "cveMetadata": "{\"cveId\": \"CVE-2025-66277\", \"state\": \"PUBLISHED\", \"dateUpdated\": \"2026-02-11T16:49:06.520Z\", \"dateReserved\": \"2025-11-26T09:25:37.832Z\", \"assignerOrgId\": \"2fd009eb-170a-4625-932b-17a53af1051f\", \"datePublished\": \"2026-02-11T12:15:43.851Z\", \"assignerShortName\": \"qnap\"}",
      "dataType": "CVE_RECORD",
      "dataVersion": "5.2"
    }
  }
}


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Tags
Taxonomy of the tags.




Sightings

Author Source Type Date

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.