Vulnerability · Published Oct 3, 2025 · Assigned by qnap

CVE-2025-52854QTS, QuTS hero

Medium 5.1

In plain English

A medium-severity null pointer dereference in QTS from QNAP Systems Inc.. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.4% (higher than 32% of all known vulnerabilities).

Severity (CVSS 4.0)5.1Medium

Exploit odds (30 days)0.4%top 67.6% of all CVEs

Exploited in the wildNo reportsCISA SSVC: none

Attack toolingNoneno public tooling known

Official description

A NULL pointer dereference 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 launch a denial-of-service (DoS) attack. 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

Affected products (as reported)

Vendor	Product	Versions
QNAP Systems Inc.	QTS	5.2.x – before 5.2.6.3195 build 20250715
QNAP Systems Inc.	QuTS hero	h5.2.x – before h5.2.6.3195 build 20250715

Weakness: CWE-476 · Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N

References

https://www.qnap.com/en/security-advisory/qsa-25-36