CVE-2008-5343

CVE-2008-5343 is a critical-severity vulnerability in Sun Jdk with a CVSS 2.0 base score of 9.0. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low.

Key facts

Description

Java Web Start (JWS) and Java Plug-in with 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 allows remote attackers to make unauthorized network connections and hijack HTTP sessions via a crafted file that validates as both a GIF and a Java JAR file, aka "GIFAR" and CR 6707535.

Frequently asked questions

What is CVE-2008-5343?
Java Web Start (JWS) and Java Plug-in with 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 allows remote attackers to make unauthorized network connections and hijack HTTP sessions via a crafted file that validates as both a GIF and a Java JAR file, aka "GIFAR" and CR 6707535.
How severe is CVE-2008-5343?
CVE-2008-5343 has a CVSS 2.0 base score of 9.0, rated critical severity.
Is CVE-2008-5343 being actively exploited?
It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 5% (91st percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2008-5343?
CVE-2008-5343 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-2008-5343?
Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.
When was CVE-2008-5343 published?
CVE-2008-5343 was published on 2008-12-05 and last updated on 2026-06-16.

References

Affected products (91)

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