CVE-2025-54164: QNAP Systems QTS · CWE-125
Affects QNAP Systems QTSSource CVE Database V5
Not known to be exploited · CVSS 4.6 Medium : upgrade to 5.2.7.3256 build 20250913 when convenient.
Data as of 26 Oct 2026, 06:26 UTC
- EPSS
- 0.3% chance of exploitation in 30 days – higher than 27% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
- Patch
- Available – fixed in 5.2.7.3256 build 20250913, h5.3.1.3250 build 20250912, h5.2.7.3256 build 20250913
CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N/E:UExploitation evidence
Disclosed: evidence found.
CVE published 2 Jan 2026
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 2026-10-26.
What to do
Upgrade QTS to 5.2.7.3256 build 20250913; QuTS hero to h5.3.1.3250 build 20250912 or h5.2.7.3256 build 20250913.
Affected software
| Product | Affected | Fixed in |
|---|---|---|
| QNAP Systems Inc.QTS | Affected
| Fixed in
|
| QNAP Systems Inc.QuTS hero | Affected
| Fixed in
|
AI-suggested
1. Immediately upgrade all QNAP QTS devices to the fixed versions: QTS 5.2.7.3256 build 20250913 or later, or QuTS hero h5.2.7.3256 build 20250913 and h5.3.1.3250 or later. 2. Enforce strict administrator account management: use strong, unique passwords, enable multi-factor authentication (MFA), and limit administrator access to trusted personnel only. 3. Regularly audit administrator account activity and access logs to detect suspicious behavior. 4. Network segmentation: isolate NAS devices from general network access and restrict management interfaces to trusted IP addresses or VPN access only. 5. Implement intrusion detection/prevention systems (IDS/IPS) to monitor for anomalous access patterns. 6. Educate users and administrators about phishing and credential theft risks to prevent initial compromise of admin accounts. 7. Maintain up-to-date backups of critical data to mitigate potential data loss scenarios.
Description
An out-of-bounds read 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 obtain secret data. We have already fixed the vulnerability in the following versions: QTS 5.2.7.3256 build 20250913 and later QuTS hero h5.2.7.3256 build 20250913 and later QuTS hero h5.3.1.3250 build 20250912 and later