CVE-2009-3881

Sun Java SE 5.0 before Update 22 and 6 before Update 17, and OpenJDK, does not prevent the existence of children of a resurrected ClassLoader, which allows remote attackers to gain privileges via unspecified vectors, related to an "information leak vulnerability," aka Bug Id 6636650.

Published: 2009-11-09 Last update: 2026-06-16 Assigner: [email protected] Source: [email protected]
NVD Status：Modified，CVE State: published
View at NVD, CVE.org, EUVD

CVE-2009-3881 is rated Moderate Risk (60.7/100): CVSS High severity, with medium exploitation likelihood (EPSS 2.67%). EPSS rose +1.39% over the last day, indicating growing attacker interest. Review affected assets and schedule 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-2009-3881

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 1.28% 2.67% +1.39%
2 2025-05-27 1.09% 1.28% +0.18%
3 2025-03-30 — 1.09% —

Full EPSS history (9 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2009-3881

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
7.5 2.0 HIGH
AV:N/AC:L/Au:N/C:P/I:P/A:P 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:P)
Partial confidentiality impact.
Integrity impact (I:P)
Partial integrity impact.
Availability impact (A:P)
Partial availability impact.
 10.0 6.4 [email protected]

Weakness enumeration for CVE-2009-3881

OS Trackers for CVE-2009-3881

vendor priority summary link
gentoo normal CVE-2009-3881: 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-2009-3881
redhat high — https://access.redhat.com/security/cve/CVE-2009-3881
ubuntu medium CVE-2009-3881 medium priority: Ubuntu including 3 source packages (openjdk-6, sun-java5, sun-java6), 24 status rows across 8 suites (dapper, hardy, intrepid, jaunty, karmic, lucid, maverick, upstream): released 11, DNE 5, ignored 4, not-affected 4. https://ubuntu.com/security/CVE-2009-3881

Affected software / configurations for CVE-2009-3881

Vendor Product Version Raw CPE
sun jre <= 1.5.0 cpe:2.3:a:sun:jre:*:update_21:*:*:*:*:*:*
sun jre <= 1.6.0 cpe:2.3:a:sun:jre:*:update_16:*:*:*:*:*:*
sun jre 1.5.0 cpe:2.3:a:sun:jre:1.5.0:update_1:*:*:*:*:*:*
sun jre 1.5.0 cpe:2.3:a:sun:jre:1.5.0:update_11:*:*:*:*:*:*
sun jre 1.5.0 cpe:2.3:a:sun:jre:1.5.0:update_12:*:*:*:*:*:*
sun jre 1.5.0 cpe:2.3:a:sun:jre:1.5.0:update_13:*:*:*:*:*:*
sun jre 1.5.0 cpe:2.3:a:sun:jre:1.5.0:update_14:*:*:*:*:*:*
sun jre 1.5.0 cpe:2.3:a:sun:jre:1.5.0:update_15:*:*:*:*:*:*
sun jre 1.5.0 cpe:2.3:a:sun:jre:1.5.0:update_16:*:*:*:*:*:*
sun jre 1.5.0 cpe:2.3:a:sun:jre:1.5.0:update_17:*:*:*:*:*:*
sun jre 1.5.0 cpe:2.3:a:sun:jre:1.5.0:update_18:*:*:*:*:*:*
sun jre 1.5.0 cpe:2.3:a:sun:jre:1.5.0:update_19:*:*:*:*:*:*
sun jre 1.5.0 cpe:2.3:a:sun:jre:1.5.0:update_2:*:*:*:*:*:*
sun jre 1.5.0 cpe:2.3:a:sun:jre:1.5.0:update_20:*:*:*:*:*:*
sun jre 1.5.0 cpe:2.3:a:sun:jre:1.5.0:update_3:*:*:*:*:*:*
sun jre 1.5.0 cpe:2.3:a:sun:jre:1.5.0:update_4:*:*:*:*:*:*
sun jre 1.5.0 cpe:2.3:a:sun:jre:1.5.0:update_5:*:*:*:*:*:*
sun jre 1.5.0 cpe:2.3:a:sun:jre:1.5.0:update_6:*:*:*:*:*:*
sun jre 1.5.0 cpe:2.3:a:sun:jre:1.5.0:update_7:*:*:*:*:*:*
sun jre 1.5.0 cpe:2.3:a:sun:jre:1.5.0:update_8:*:*:*:*:*:*
sun jre 1.5.0 cpe:2.3:a:sun:jre:1.5.0:update_9:*:*:*:*:*:*
sun jre 1.5.0 cpe:2.3:a:sun:jre:1.5.0:update10:*:*:*:*:*:*
sun jre 1.6.0 cpe:2.3:a:sun:jre:1.6.0:update_1:*:*:*:*:*:*
sun jre 1.6.0 cpe:2.3:a:sun:jre:1.6.0:update_10:*:*:*:*:*:*
sun jre 1.6.0 cpe:2.3:a:sun:jre:1.6.0:update_11:*:*:*:*:*:*
sun jre 1.6.0 cpe:2.3:a:sun:jre:1.6.0:update_12:*:*:*:*:*:*
sun jre 1.6.0 cpe:2.3:a:sun:jre:1.6.0:update_13:*:*:*:*:*:*
sun jre 1.6.0 cpe:2.3:a:sun:jre:1.6.0:update_14:*:*:*:*:*:*
sun jre 1.6.0 cpe:2.3:a:sun:jre:1.6.0:update_15:*:*:*:*:*:*
sun jre 1.6.0 cpe:2.3:a:sun:jre:1.6.0:update_2:*:*:*:*:*:*
sun jre 1.6.0 cpe:2.3:a:sun:jre:1.6.0:update_3:*:*:*:*:*:*
sun jre 1.6.0 cpe:2.3:a:sun:jre:1.6.0:update_4:*:*:*:*:*:*
sun jre 1.6.0 cpe:2.3:a:sun:jre:1.6.0:update_5:*:*:*:*:*:*
sun jre 1.6.0 cpe:2.3:a:sun:jre:1.6.0:update_6:*:*:*:*:*:*
sun jre 1.6.0 cpe:2.3:a:sun:jre:1.6.0:update_7:*:*:*:*:*:*
sun jre 1.6.0 cpe:2.3:a:sun:jre:1.6.0:update_8:*:*:*:*:*:*
sun jre 1.6.0 cpe:2.3:a:sun:jre:1.6.0:update_9:*:*:*:*:*:*
sun openjdk — cpe:2.3:a:sun:openjdk:*:*:*:*:*:*:*:*

References for CVE-2009-3881

cvelogic Threat Intelligence