CVE-2008-5351

CVE-2008-5351 is a high-severity vulnerability in Sun Jdk with a CVSS 2.0 base score of 7.5. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-264.

Key facts

• Severity: High (CVSS 2.0 base score 7.5)
• EPSS exploit prediction: 3% (87th percentile)
• Actively exploited: Not listed in CISA KEV
• Weakness: CWE-264
• Affected product: Sun Jdk
• Published: 2008-12-05
• Last modified: 2026-06-16

Description

Java Runtime Environment (JRE) for Sun JDK and JRE 6 Update 10 and earlier; JDK and JRE 5.0 Update 16 and earlier; and SDK and JRE 1.4.2_18 and earlier accepts UTF-8 encodings that are not the "shortest" form, which makes it easier for attackers to bypass protection mechanisms for other applications that rely on shortest-form UTF-8 encodings.

Frequently asked questions

What is CVE-2008-5351?

Java Runtime Environment (JRE) for Sun JDK and JRE 6 Update 10 and earlier; JDK and JRE 5.0 Update 16 and earlier; and SDK and JRE 1.4.2_18 and earlier accepts UTF-8 encodings that are not the "shortest" form, which makes it easier for attackers to bypass protection mechanisms for other applications that rely on shortest-form UTF-8 encodings.

How severe is CVE-2008-5351?

CVE-2008-5351 has a CVSS 2.0 base score of 7.5, rated high severity.

Is CVE-2008-5351 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 3% (87th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2008-5351?

CVE-2008-5351 primarily affects Sun Jdk. In total, 91 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2008-5351?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.

When was CVE-2008-5351 published?

CVE-2008-5351 was published on 2008-12-05 and last updated on 2026-06-16.

References

• http://lists.opensuse.org/opensuse-security-announce/2009-01/msg00009.html
• http://lists.opensuse.org/opensuse-security-announce/2009-03/msg00001.html
• http://lists.opensuse.org/opensuse-security-announce/2009-04/msg00004.html
• http://lists.opensuse.org/opensuse-security-announce/2009-05/msg00000.html
• http://marc.info/?l=bugtraq&m=123678756409861&w=2
• http://marc.info/?l=bugtraq&m=126583436323697&w=2
• http://osvdb.org/50502
• http://rhn.redhat.com/errata/RHSA-2008-1018.html
• http://rhn.redhat.com/errata/RHSA-2008-1025.html
• http://secunia.com/advisories/32991
• http://secunia.com/advisories/33015
• http://secunia.com/advisories/33709
• http://secunia.com/advisories/33710
• http://secunia.com/advisories/34233
• http://secunia.com/advisories/34259
• http://secunia.com/advisories/34447
• http://secunia.com/advisories/34605
• http://secunia.com/advisories/34889
• http://secunia.com/advisories/34972
• http://secunia.com/advisories/35065
• http://secunia.com/advisories/37386
• http://secunia.com/advisories/38539
• http://security.gentoo.org/glsa/glsa-200911-02.xml
• http://sunsolve.sun.com/search/document.do?assetkey=1-26-245246-1
• http://support.avaya.com/elmodocs2/security/ASA-2009-012.htm
• http://support.nortel.com/go/main.jsp?cscat=BLTNDETAIL&DocumentOID=829914&poid=
• http://www.redhat.com/support/errata/RHSA-2009-0016.html
• http://www.redhat.com/support/errata/RHSA-2009-0369.html
• http://www.redhat.com/support/errata/RHSA-2009-0445.html
• http://www.securityfocus.com/bid/32608

Affected products (91)

• cpe:2.3:a:sun:jdk:*:update_16:*:*:*:*:*:*
• cpe:2.3:a:sun:jdk:*:update_10:*:*:*:*:*:*
• cpe:2.3:a:sun:jdk:5.0:update_1:*:*:*:*:*:*
• cpe:2.3:a:sun:jdk:5.0:update_10:*:*:*:*:*:*
• cpe:2.3:a:sun:jdk:5.0:update_11:*:*:*:*:*:*
• cpe:2.3:a:sun:jdk:5.0:update_12:*:*:*:*:*:*
• cpe:2.3:a:sun:jdk:5.0:update_13:*:*:*:*:*:*
• cpe:2.3:a:sun:jdk:5.0:update_14:*:*:*:*:*:*
• cpe:2.3:a:sun:jdk:5.0:update_15:*:*:*:*:*:*
• cpe:2.3:a:sun:jdk:5.0:update_2:*:*:*:*:*:*
• cpe:2.3:a:sun:jdk:5.0:update_3:*:*:*:*:*:*
• cpe:2.3:a:sun:jdk:5.0:update_4:*:*:*:*:*:*
• cpe:2.3:a:sun:jdk:5.0:update_5:*:*:*:*:*:*
• cpe:2.3:a:sun:jdk:5.0:update_6:*:*:*:*:*:*
• cpe:2.3:a:sun:jdk:5.0:update_7:*:*:*:*:*:*
• cpe:2.3:a:sun:jdk:5.0:update_8:*:*:*:*:*:*
• cpe:2.3:a:sun:jdk:5.0:update_9:*:*:*:*:*:*
• cpe:2.3:a:sun:jdk:6:*:*:*:*:*:*:*
• cpe:2.3:a:sun:jdk:6:update_1:*:*:*:*:*:*
• cpe:2.3:a:sun:jdk:6:update_2:*:*:*:*:*:*
• cpe:2.3:a:sun:jdk:6:update_3:*:*:*:*:*:*
• cpe:2.3:a:sun:jdk:6:update_4:*:*:*:*:*:*
• cpe:2.3:a:sun:jdk:6:update_5:*:*:*:*:*:*
• cpe:2.3:a:sun:jdk:6:update_6:*:*:*:*:*:*
• cpe:2.3:a:sun:jdk:6:update_7:*:*:*:*:*:*
• cpe:2.3:a:sun:jdk:6:update_8:*:*:*:*:*:*
• cpe:2.3:a:sun:jdk:6:update_9:*:*:*:*:*:*
• cpe:2.3:a:sun:jre:*:*:*:*:*:*:*:*
• cpe:2.3:a:sun:jre:*:update_16:*:*:*:*:*:*
• cpe:2.3:a:sun:jre:*:update_10:*:*:*:*:*:*
• cpe:2.3:a:sun:jre:1.4.2_1:*:*:*:*:*:*:*
• cpe:2.3:a:sun:jre:1.4.2_2:*:*:*:*:*:*:*
• cpe:2.3:a:sun:jre:1.4.2_3:*:*:*:*:*:*:*
• cpe:2.3:a:sun:jre:1.4.2_4:*:*:*:*:*:*:*
• cpe:2.3:a:sun:jre:1.4.2_5:*:*:*:*:*:*:*
• cpe:2.3:a:sun:jre:1.4.2_6:*:*:*:*:*:*:*
• cpe:2.3:a:sun:jre:1.4.2_7:*:*:*:*:*:*:*
• cpe:2.3:a:sun:jre:1.4.2_8:*:*:*:*:*:*:*
• cpe:2.3:a:sun:jre:1.4.2_9:*:*:*:*:*:*:*
• cpe:2.3:a:sun:jre:1.4.2_10:*:*:*:*:*:*:*

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