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Description

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

PUBLISHED Reserved 2025-11-26 | Published 2026-02-11 | Updated 2026-02-12 | Assigner qnap




CRITICAL: 9.2CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N

Problem types

CWE-59

Product status

Default status
unaffected

5.2.x (custom) before 5.2.8.3350 build 20251216
affected

Default status
unaffected

h5.3.x (custom) before h5.3.2.3354 build 20251225
affected

h5.2.x (custom) before h5.2.8.3350 build 20251216
affected

Credits

coral finder

References

www.qnap.com/en/security-advisory/qsa-26-05

cve.org (CVE-2025-66277)

nvd.nist.gov (CVE-2025-66277)

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