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VulnerabilityPublished Updated

CVE-2025-59385: QNAP Systems QTS · CWE-290

Affects QNAP Systems QTSSource CVE Database V5

0

Not known to be exploited · CVSS 8.1 High : upgrade to 5.3.0 or 5.2.7 soon.

Data as of 26 Oct 2026, 14:05 UTC

CVSS 4.0 base score
8.1High
How severe the flaw is on the 0–10 CVSS scale.
EPSS
0.6% chance of exploitation in 30 days – higher than 50% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
Patch
Available – fixed in 5.3.0, 5.2.7
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U

Exploitation evidence

  1. Disclosed: evidence found.

    CVE published 16 Dec 2025

  2. Detectable: no evidence on record.

    No public nuclei template indexed

  3. Weaponised: no evidence on record.

    No public exploit code indexed in Metasploit or Exploit-DB

  4. Exploited in the wild: no evidence on record.

    Not in CISA KEV and no source reports exploitation

  5. Observed by OffSeq Mirage: no evidence on record.

    No attack traffic recorded by OffSeq Mirage sensors

A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 26 Oct 2026.

What to do

Upgrade QNAP Systems QTS to 5.3.0 or 5.2.7.

Affected software

ProductAffectedFixed in
QNAP Systems Inc. QTSAffected
  • >=5.2.0 <5.3.0
  • <5.2.7
Fixed in
  • 5.3.0
  • 5.2.7

AI-suggested

Organizations should immediately verify their QNAP QTS version and upgrade to the patched versions: QTS 5.2.7.3297 build 20251024 or later, or the corresponding QuTS hero versions. If immediate patching is not feasible, restrict network access to the NAS management interfaces by implementing firewall rules that limit access to trusted IP addresses only. Disable any unnecessary remote management features and enforce strong network segmentation to isolate NAS devices from untrusted networks. Monitor network traffic and device logs for unusual authentication attempts or access patterns indicative of exploitation attempts. Additionally, implement regular backups stored offline or on separate systems to mitigate data loss risks. Stay informed on QNAP security advisories for any updates or additional mitigations.

Description

An authentication bypass by spoofing vulnerability has been reported to affect several QNAP operating system versions. The remote attackers can then exploit the vulnerability to access resources which are not otherwise accessible without proper authentication. We have already fixed the vulnerability in the following versions: QTS 5.2.7.3297 build 20251024 and later QuTS hero h5.2.7.3297 build 20251024 and later QuTS hero h5.3.1.3292 build 20251024 and later

References

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