CVE-2009-2721

Multiple unspecified vulnerabilities in the Provider class in Sun Java SE 5.0 before Update 20 have unknown impact and attack vectors, aka BugId 6406003.

Published: 2009-08-10 Last update: 2026-04-23 Assigner: [email protected] Source: [email protected]

Conclusion & alert: CVE-2009-2721 is rated High Risk (70.2/100): CVSS Critical severity, with medium exploitation likelihood (EPSS 2.44%). Core evidence: EPSS rose +1.41% over the last day, indicating growing attacker interest. Mandatory action: High exploitation likelihood—assess exposure and prioritize remediation.

Risk is dynamic; we continuously reassess and refresh what is shown on this page as upstream context changes.

Exploit prediction scoring system (EPSS) score for CVE-2009-2721

EPSS lead: Daily EPSS estimates relative likelihood of exploitation; percentile ranks this CVE among scored vulnerabilities (higher = more severe relative rank).

# Date Old EPSS score New EPSS score Delta (New - Old)
1 2026-06-15 1.04% 2.44% +1.41%
2 2025-12-30 1.09% 1.04% -0.05%
3 2025-10-27 1.09%

Full EPSS history (8 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2009-2721

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
10.0 2.0 HIGH
AV:N/AC:L/Au:N/C:C/I:C/A:C Click to expand
Access vector (AV:N)
Can be exploited remotely over network reachability.
Access complexity (AC:L)
Exploitation conditions are straightforward and predictable.
Authentication (AU:N)
No authentication is required.
Confidentiality impact (C:C)
Complete confidentiality impact.
Integrity impact (I:C)
Complete integrity impact.
Availability impact (A:C)
Complete availability impact.
10.0 10.0 [email protected]

Weakness enumeration for CVE-2009-2721

OS Trackers for CVE-2009-2721

vendor priority summary link
gentoo normal CVE-2009-2721: 1 GLSA(s) (200911-02), 5 atom(s) (app-emulation/emul-linux-x86-java, dev-java/blackdown-jdk, dev-java/blackdown-jre, dev-java/sun-jdk, dev-java/sun-jre-bin); latest impact normal. https://bugs.gentoo.org/buglist.cgi?quicksearch=CVE-2009-2721
redhat low https://access.redhat.com/security/cve/CVE-2009-2721
ubuntu low CVE-2009-2721 low priority: Ubuntu including 4 source packages (java, openjdk-6, sun-java5, sun-java6), 36 status rows across 9 suites (dapper, hardy, intrepid, jaunty, karmic, lucid, maverick, natty, upstream): not-affected 16, DNE 14, ignored 4, released 2. https://ubuntu.com/security/CVE-2009-2721

Affected software / configurations for CVE-2009-2721

Vendor Product Version Raw CPE
sun java_se <= 5.0 cpe:2.3:a:sun:java_se:*:19:*:*:*:*:*:*

References for CVE-2009-2721

cvelogic Threat Intelligence