CVE-2025-47212: QNAP Systems QTS · OS Command Injection
Affects QNAP Systems QTSSource CVE Database V5
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
- 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:NExploitation evidence
Disclosed: evidence found.
CVE published 3 Oct 2025
Detectable: no evidence on record.
No public nuclei template indexed
Weaponised: no evidence on record.
No public exploit code indexed in Metasploit or Exploit-DB
Exploited in the wildExploited: no evidence on record.
Not in CISA KEV and no source reports exploitation
Observed by OffSeq MirageSeen by 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
| Product | Affected | Fixed in |
|---|---|---|
| QNAP Systems Inc. QTS | Affected
| Fixed in
|
AI-suggested
- 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.
- Enforce strong, unique administrative passwords and consider multi-factor authentication (MFA) to reduce the risk of credential compromise.
- Limit administrative access to trusted networks and IP addresses using network segmentation and firewall rules.
- Monitor administrative account activity and audit logs for unusual or unauthorized actions.
- Disable or restrict remote administrative access if not required, or use VPNs and secure channels for remote management.
- Regularly back up NAS data and verify backup integrity to enable recovery in case of compromise.
- Educate users and administrators about phishing and social engineering risks that could lead to credential theft.
- Employ endpoint detection and response (EDR) tools to detect anomalous command execution or lateral movement originating from NAS devices.
- 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