How severe is CVE-2000-0563?

CVE-2000-0563 has a CVSS 2.0 base score of 10.0, rated critical severity.

Is CVE-2000-0563 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 3% (83rd percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2000-0563?

CVE-2000-0563 affects Apple Mac Os Runtime For Java. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2000-0563?

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

When was CVE-2000-0563 published?

CVE-2000-0563 was published on 2000-10-20 and last updated on 2026-06-16.

CVE-2000-0563

CVE-2000-0563 is a critical-severity vulnerability in Apple Mac Os Runtime For Java with a CVSS 2.0 base score of 10.0. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low.

Key facts

Severity: Critical (CVSS 2.0 base score 10.0)
EPSS exploit prediction: 3% (83rd percentile)
Actively exploited: Not listed in CISA KEV
Affected product: Apple Mac Os Runtime For Java
Published: 2000-10-20
Last modified: 2026-06-16

Description

The URLConnection function in MacOS Runtime Java (MRJ) 2.1 and earlier and the Microsoft virtual machine (VM) for MacOS allows a malicious web site operator to connect to arbitrary hosts using a HTTP redirection, in violation of the Java security model.

Frequently asked questions

What is CVE-2000-0563?: The URLConnection function in MacOS Runtime Java (MRJ) 2.1 and earlier and the Microsoft virtual machine (VM) for MacOS allows a malicious web site operator to connect to arbitrary hosts using a HTTP redirection, in violation of the Java security model.
How severe is CVE-2000-0563?: CVE-2000-0563 has a CVSS 2.0 base score of 10.0, rated critical severity.
Is CVE-2000-0563 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 3% (83rd percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2000-0563?: CVE-2000-0563 affects Apple Mac Os Runtime For Java. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2000-0563?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.
When was CVE-2000-0563 published?: CVE-2000-0563 was published on 2000-10-20 and last updated on 2026-06-16.

References

Affected products (1)

cpe:2.3:a:apple:mac_os_runtime_for_java:*:*:java:*:*:*:*:*

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