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Fencer Vulns
critical 9.3

CVE-2009-2724 json

Race condition in the java.lang package in Sun Java SE 5.0 before Update 20 has unknown impact and attack vectors, related to a "3Y Race co…

published 2009-08-10 17 y ago modified 2026-06-16 4 mo ago also EUVD-2009-2715

cvss
9.3
version 2.0, NVD
cisa kev
Not listed
not in CISA's catalog
epss
1.6%
EPSS 1.6% chance of exploitation in 30 days, percentile 75%
public exploits
0
none known

Summary

Race condition in the java.lang package in Sun Java SE 5.0 before Update 20 has unknown impact and attack vectors, related to a "3Y Race condition in reflection checks."

Patch / fix

  • java-1.5.0-sun RHEL 4 EXTRAS 1.5.0.20-1jpp.1.el4
  • java-1.5.0-sun RHEL 5 EXTRAS 1.5.0.20-1jpp.1.el5
  • java-1.5.0-sun-src RHEL 4 EXTRAS 1.5.0.20-1jpp.1.el4
  • java-1.5.0-sun-src RHEL 5 EXTRAS 1.5.0.20-1jpp.1.el5
  • java-1.5.0-sun-demo RHEL 4 EXTRAS 1.5.0.20-1jpp.1.el4
  • java-1.5.0-sun-demo RHEL 5 EXTRAS 1.5.0.20-1jpp.1.el5
  • java-1.5.0-sun-jdbc RHEL 4 EXTRAS 1.5.0.20-1jpp.1.el4
  • java-1.5.0-sun-jdbc RHEL 5 EXTRAS 1.5.0.20-1jpp.1.el5

red hat advisories RHSA-2009:1199

Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

red hat product security vex CVE-2009-2724 updated cvss 5.8

JDK race condition vulnerability reflection checks

  • Red Hat Desktop version 4 Extras java-1.5.0-sun 1.5.0.20-1jpp.1.el4, java-1.5.0-sun-src 1.5.0.20-1jpp.1.el4, java-1.5.0-sun-demo 1.5.0.20-1jpp.1.el4, java-1.5.0-sun-jdbc 1.5.0.20-1jpp.1.el4, java-1.5.0-sun-plugin 1.5.0.20-1jpp.1.el4 Red Hat Enterprise Linux AS version 4 Extras java-1.5.0-sun 1.5.0.20-1jpp.1.el4, java-1.5.0-sun-src 1.5.0.20-1jpp.1.el4, java-1.5.0-sun-demo 1.5.0.20-1jpp.1.el4, java-1.5.0-sun-jdbc 1.5.0.20-1jpp.1.el4, java-1.5.0-sun-plugin 1.5.0.20-1jpp.1.el4 Red Hat Enterprise Linux Desktop Supplementary (v. 5) java-1.5.0-sun 1.5.0.20-1jpp.1.el5, java-1.5.0-sun-src 1.5.0.20-1jpp.1.el5, java-1.5.0-sun-demo 1.5.0.20-1jpp.1.el5, java-1.5.0-sun-jdbc 1.5.0.20-1jpp.1.el5, java-1.5.0-sun-plugin 1.5.0.20-1jpp.1.el5 Red Hat Enterprise Linux ES version 4 Extras java-1.5.0-sun 1.5.0.20-1jpp.1.el4, java-1.5.0-sun-src 1.5.0.20-1jpp.1.el4, java-1.5.0-sun-demo 1.5.0.20-1jpp.1.el4, java-1.5.0-sun-jdbc 1.5.0.20-1jpp.1.el4, java-1.5.0-sun-plugin 1.5.0.20-1jpp.1.el4 Red Hat Enterprise Linux Server Supplementary (v. 5) java-1.5.0-sun 1.5.0.20-1jpp.1.el5, java-1.5.0-sun-src 1.5.0.20-1jpp.1.el5, java-1.5.0-sun-demo 1.5.0.20-1jpp.1.el5, java-1.5.0-sun-jdbc 1.5.0.20-1jpp.1.el5, java-1.5.0-sun-plugin 1.5.0.20-1jpp.1.el5 Red Hat Enterprise Linux WS version 4 Extras java-1.5.0-sun 1.5.0.20-1jpp.1.el4, java-1.5.0-sun-src 1.5.0.20-1jpp.1.el4, java-1.5.0-sun-demo 1.5.0.20-1jpp.1.el4, java-1.5.0-sun-jdbc 1.5.0.20-1jpp.1.el4, java-1.5.0-sun-plugin 1.5.0.20-1jpp.1.el4
    fixed: vendor fix RHSA-2009:1199

Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf

Exploit prediction

1.58% chance of exploitation in the next 30 days, higher than 75% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by version score vector
NVD 2.0 9.3 AV:N/AC:M/Au:N/C:C/I:C/A:C

Classification

Weakness
  • CWE-362 Concurrent Execution using Shared Resource with Improper Synchronization

References

Sources

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.