EIP-2026-103665

PRE-CVE

Sun Java Applet 1.x - Invocation Version Specification

Title source: legacy
STIX 2.1

Exploitation Summary

EIP tracks 1 public exploit for EIP-2026-103665. PoCs published by Peter Greenwood.

AI-analyzed exploit summary This PoC demonstrates a Java version downgrade attack by forcing the browser to load a vulnerable JRE version (1.3.1_07) via the OBJECT tag's codebase attribute. It exploits a design flaw in Java's dynamic versioning support to bypass security updates.

Description

Sun Java Applet 1.x - Invocation Version Specification

Exploits (1)

exploitdb WORKING POC VERIFIED
by Peter Greenwood · htmldosmultiple
https://www.exploit-db.com/exploits/24778

This PoC demonstrates a Java version downgrade attack by forcing the browser to load a vulnerable JRE version (1.3.1_07) via the OBJECT tag's codebase attribute. It exploits a design flaw in Java's dynamic versioning support to bypass security updates.

Classification
Working Poc 90%
Attack Type
Other
Complexity
Trivial
Reliability
Reliable
Target: Java Plug-in (JRE 1.3.1_07 and earlier)
No auth needed
Prerequisites: Vulnerable JRE version installed or user prompted to install it · Browser with Java plug-in support
devstral-2 · analyzed Feb 18, 2026 Full analysis →

Details

Status pre_cve
Tracked Since Feb 18, 2026