CVE-2025-64427: ZimaOS is a fork of CasaOS, an operating system for Zima devices and x86-64 systems with UEFI

Q: How do I fix CVE-2025-64427?

zimaos: upgrade to newer than 1.5.0. Exact commands for each OS are on this page.

Q: Is CVE-2025-64427 being exploited?

CVE-2025-64427 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

Q: What does CVE-2025-64427 affect?

CVE-2025-64427 affects zimaos. Severity is high (CVSS 7.1). 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 tar

Q: How urgent is CVE-2025-64427?

Priority 34/100. High severity; Public exploit reference

Routine

HIGH 7.1UPGRADE

CVE-2025-64427 is a high-severity flaw (CVSS 7.1) affecting zimaos. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

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 loc

Why this priority

High severity
Public exploit reference

A fixed release or distro patch exists.

Risk facts

CVSS score	7.1 (High)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	Low
User interaction	None
EPSS exploit chance	0.2% (top 84%)
CISA exploited list	No
Weakness	CWE-200, CWE-918
Published	2026-03-02
Last modified	2026-06-17

Publisher (CNA): GitHub, Inc. · Vendor: zimaspace

Last updated 2026-06-17 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2026-03-02 17:16 UTCPublished CVE record published
2026-06-17 09:54 UTCUpdated Record last modified

zimaspace zimaos UPGRADE

Affected: <= 1.5.0

Fixed in: newer than 1.5.0

Safe to downgrade to: no unaffected older release

Check your OS release

cat /etc/os-release; uname -r

Debian / Ubuntu

sudo apt update && sudo apt full-upgrade

RHEL / Amazon Linux / Fedora

sudo dnf upgrade --refresh

Windows

Install the latest cumulative update from Windows Update

If no patch exists yet

OS downgrades are not safe. Apply the vendor mitigation from the advisory and restrict exposure.

Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.

Quick answers

How do I fix CVE-2025-64427?

zimaos: upgrade to newer than 1.5.0. Exact commands for each OS are on this page.

Is CVE-2025-64427 being exploited?

CVE-2025-64427 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

What does CVE-2025-64427 affect?

CVE-2025-64427 affects zimaos. Severity is high (CVSS 7.1). 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 tar

How urgent is CVE-2025-64427?

Priority 34/100. High severity; Public exploit reference

Related CVEs

CVE-2026-28798 CRITICAL 9.0 UPGRADE ZimaOS is a fork of CasaOS, an operating system for Zima devices and x86-64 systems with UEFI
CVE-2026-28442 HIGH 8.5 MITIGATE ZimaOS is a fork of CasaOS, an operating system for Zima devices and x86-64 systems with UEFI
CVE-2026-28286 HIGH 8.5 MITIGATE ZimaOS is a fork of CasaOS, an operating system for Zima devices and x86-64 systems with UEFI

References

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