Medium severity · published Jan 2, 2026
CVE-2025-57705
QTS, QuTS hero
4.9
CVSS
0.4%
EPSS
No
On KEV
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
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H
Attack vector
Network
Complexity
Low
Privileges
High
User interaction
None
Confidentiality
None
Integrity
None
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.4% · higher than 29% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
QT
QTS · QNAP Systems Inc.
5.2.x before 5.2.7.3256 build 20250913 · source: vendor, NVD
QH
QuTS hero · QNAP Systems Inc.
h5.2.x before h5.2.7.3256 build 20250913; h5.3.x before h5.3.1.3250 build 20250912 · source: vendor, NVD
Affected product
QT
QTS
QNAP Systems Inc.
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QuTS hero is not affected