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VulnerabilityPublished Updated

CVE-2025-47212: QNAP Systems QTS · OS Command Injection

Affects QNAP Systems QTSSource CVE Database V5

0

Not known to be exploited · CVSS 5.1 Medium : upgrade to 5.3.0 when convenient.

Data as of 26 Oct 2026, 12:55 UTC

CVSS 4.0 base score
5.1Medium
How severe the flaw is on the 0–10 CVSS scale.
EPSS
1.3% chance of exploitation in 30 days – higher than 70% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
Patch
Available – fixed in 5.3.0
CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N

Exploitation evidence

  1. Disclosed: evidence found.

    CVE published 3 Oct 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.

Affected software

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

AI-suggested

  1. Immediately update all QNAP NAS devices to QTS 5.2.6.3195 build 20250715 or later, or QuTS hero h5.2.6.3195 build 20250715 or later, as provided by the vendor.
  2. Enforce strong, unique administrative passwords and consider multi-factor authentication (MFA) to reduce the risk of credential compromise.
  3. Limit administrative access to trusted networks and IP addresses using network segmentation and firewall rules.
  4. Monitor administrative account activity and audit logs for unusual or unauthorized actions.
  5. Disable or restrict remote administrative access if not required, or use VPNs and secure channels for remote management.
  6. Regularly back up NAS data and verify backup integrity to enable recovery in case of compromise.
  7. Educate users and administrators about phishing and social engineering risks that could lead to credential theft.
  8. Employ endpoint detection and response (EDR) tools to detect anomalous command execution or lateral movement originating from NAS devices.
  9. Stay informed about vendor advisories and emerging threats related to QNAP products.

Description

A command injection 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 execute arbitrary commands. We have already fixed the vulnerability in the following versions: QTS 5.2.6.3195 build 20250715 and later QuTS hero h5.2.6.3195 build 20250715 and later

References

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