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VulnerabilityPublished

CVE-2025-57705: QNAP Systems QTS · Unthrottled Resource Allocation

Affects QNAP Systems QTSSource CVE Database V5

0

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, 17:16 UTC

CVSS 4.0 base score
4.6Medium
How severe the flaw is on the 0–10 CVSS scale.
EPSS
0.3% chance of exploitation in 30 days – higher than 29% 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:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U

Exploitation evidence

  1. Disclosed: evidence found.

    CVE published 2 Jan 2026

  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 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

ProductAffectedFixed in
QNAP Systems Inc.QTSAffected
  • =>=5.2.0 <5.3.0
Fixed in
  • 5.2.7.3256 build 20250913
QNAP Systems Inc.QuTS heroAffected
  • ≥ h5.2.x, < h5.2.7.3256 build 20250913
  • ≥ h5.3.x, < h5.3.1.3250 build 20250912
Fixed in
  • h5.3.1.3250 build 20250912
  • h5.2.7.3256 build 20250913

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 / h5.3.1.3250 builds.
  2. Restrict administrator access strictly using strong authentication methods, including multi-factor authentication, to reduce the risk of credential compromise.
  3. Monitor system resource usage closely for unusual spikes that could indicate exploitation attempts.
  4. Implement network segmentation to limit exposure of QNAP devices to untrusted networks.
  5. Regularly audit user accounts and permissions on QNAP devices to ensure least privilege principles.
  6. Employ intrusion detection systems that can alert on abnormal resource consumption patterns.
  7. Maintain up-to-date backups to mitigate impact in case of denial of service or other attacks.
  8. Educate administrators on the risks of resource exhaustion attacks and the importance of timely patching.

Description

An allocation of resources without limits or throttling 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 prevent other systems, applications, or processes from accessing the same type of resource. 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

References

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