How severe is CVE-2025-62850?

CVE-2025-62850 has a CVSS 3.x base score of 7.2, rated high severity. It is exploitable over network with low attack complexity, requires high privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2025-62850 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (25th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2025-62850?

CVE-2025-62850 affects Qnap Quts Hero. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2025-62850?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.

Does CVE-2025-62850 have an EU (EUVD) identifier?

Yes. CVE-2025-62850 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-210097.

When was CVE-2025-62850 published?

CVE-2025-62850 was published on 2026-06-10 and last updated on 2026-06-17.

CVE-2025-62850

CVE-2025-62850 is a high-severity vulnerability in Qnap Quts Hero with a CVSS 3.x base score of 7.2. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-476.

Key facts

Severity: High (CVSS 3.x base score 7.2)
CVSS v4: 5.1
EPSS exploit prediction: 0% (25th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2025-210097
Weakness: CWE-476
Affected product: Qnap Quts Hero
Published: 2026-06-10
Last modified: 2026-06-17

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: QuTS hero h5.2.9.3410 build 20260214 and later QuTS hero h5.3.4.3500 build 20260520 and later QuTS hero h6.0.0.3459 build 20260409 and later

Frequently asked questions

What is CVE-2025-62850?: 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: QuTS hero h5.2.9.3410 build 20260214 and later QuTS hero h5.3.4.3500 build 20260520 and later QuTS hero h6.0.0.3459 build 20260409 and later
How severe is CVE-2025-62850?: CVE-2025-62850 has a CVSS 3.x base score of 7.2, rated high severity. It is exploitable over network with low attack complexity, requires high privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2025-62850 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (25th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2025-62850?: CVE-2025-62850 affects Qnap Quts Hero. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2025-62850?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
Does CVE-2025-62850 have an EU (EUVD) identifier?: Yes. CVE-2025-62850 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-210097.
When was CVE-2025-62850 published?: CVE-2025-62850 was published on 2026-06-10 and last updated on 2026-06-17.

References

https://www.qnap.com/en/security-advisory/qsa-26-38

Affected products (1)

cpe:2.3:o:qnap:quts_hero:*:*:*:*:*:*:*:*

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