CVE-2000-0563: n/a vulnerability

CVE-2000-0563: The URLConnection function in MacOS Runtime Java (MRJ) 2.1 and earlier and the Microsoft virtual machine (V...

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.

UnknownCVSS not scoredNot KEV-listedUpdatedAug 8, 2024, 05:21 UTC (UTC+00:00)

Security readout for executives and security teams

A flaw in early Mac Java runtimes (Apple MRJ 2.1 and earlier and Microsoft's VM for Mac OS) let a malicious website redirect a Java applet's network connection to a different host than the one the applet came from. That bypassed the browser's same-origin protection and could allow the site to probe or interact with systems the user was not intending to reach. Exposure today is negligible. The affected components are Apple's Mac OS Runtime for Java 2.1 and earlier and the Microsoft VM for classic Mac OS, both of which are decades out of support and unlikely to exist in any modern enterprise. Residual risk would only apply to preserved legacy Mac systems still running Java applets in period browsers. Low priority. This is a 2000-era classic Mac OS Java flaw with no KEV listing and no evidence of current exploitation. Treat as informational unless the environment still runs classic Mac OS systems, in which case decommissioning those assets is the more meaningful control than patching this specific issue. Mitigation focus: Retire any classic Mac OS systems still running MRJ 2.1 or the Microsoft VM for Mac OS.; Disable Java applet execution in any legacy browser still deployed on such hosts.; Check Apple and Microsoft historical advisories for the specific runtime update that addressed URLConnection redirect handling..

Prepared: Jul 12, 2026, 01:28 UTC (UTC+00:00)

Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.

Potential ATT&CK relevance

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Vulnerability profileCVE Program record

Severity: Unknown
CVSS: Not scored
Known Exploited: No
Published: Jul 12, 2000, 04:00 UTC (UTC+00:00)

Official CVE source material

CNA and ADP enrichment extracted from CVE v5

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0CVSS vectors

0Timeline events

0ADP providers

1Source links

CVSS and timeline data

No CVSS vectors or timeline events were available in the normalized CVE source material.

Source materials

CVE List V5 sourceCVE List V5

Affected products

Products and packages named in the record

VendorProductVersion / packageStatus

n/an/an/aListed

Weakness

CWE details

No CWE listed

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