How severe is CVE-2025-64427?

CVE-2025-64427 has a CVSS 3.x base score of 7.1, rated high severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity none, and availability low.

Is CVE-2025-64427 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (15th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2025-64427?

CVE-2025-64427 affects Zimaspace Zimaos. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2025-64427?

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-2025-64427 have an EU (EUVD) identifier?

Yes. CVE-2025-64427 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-208196.

When was CVE-2025-64427 published?

CVE-2025-64427 was published on 2026-03-02 and last updated on 2026-06-17.

CVE-2025-64427

CVE-2025-64427 is a high-severity vulnerability in Zimaspace Zimaos with a CVSS 3.x base score of 7.1. 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-200.

Key facts

Severity: High (CVSS 3.x base score 7.1)
EPSS exploit prediction: 0% (15th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2025-208196
Weakness: CWE-200
Affected product: Zimaspace Zimaos
Published: 2026-03-02
Last modified: 2026-06-17

Description

ZimaOS is a fork of CasaOS, an operating system for Zima devices and x86-64 systems with UEFI. In version 1.5.0 and prior, due to insufficient validation or restriction of target URLs, an authenticated local user can craft requests that target internal IP addresses (e.g., 127.0.0.1, localhost, or private network ranges). This allows the attacker to interact with internal HTTP/HTTPS services that are not intended to be exposed externally or to local users. No known patch is publicly available.

Frequently asked questions

What is CVE-2025-64427?: ZimaOS is a fork of CasaOS, an operating system for Zima devices and x86-64 systems with UEFI. In version 1.5.0 and prior, due to insufficient validation or restriction of target URLs, an authenticated local user can craft requests that target internal IP addresses (e.g., 127.0.0.1, localhost, or private network ranges). This allows the attacker to interact with internal HTTP/HTTPS services that are not intended to be exposed externally or to local users. No known patch is publicly available.
How severe is CVE-2025-64427?: CVE-2025-64427 has a CVSS 3.x base score of 7.1, rated high severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity none, and availability low.
Is CVE-2025-64427 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (15th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2025-64427?: CVE-2025-64427 affects Zimaspace Zimaos. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2025-64427?: 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-2025-64427 have an EU (EUVD) identifier?: Yes. CVE-2025-64427 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-208196.
When was CVE-2025-64427 published?: CVE-2025-64427 was published on 2026-03-02 and last updated on 2026-06-17.

References

https://github.com/IceWhaleTech/ZimaOS/security/advisories/GHSA-m8hj-7xg5-p375

Affected products (1)

cpe:2.3:o:zimaspace:zimaos:*:*:*:*:*:*:*:*

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