How severe is CVE-2008-3440?

CVE-2008-3440 has a CVSS 2.0 base score of 7.5, rated high severity.

Is CVE-2008-3440 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (82nd percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2008-3440?

CVE-2008-3440 primarily affects Sun Java. In total, 4 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2008-3440?

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-2008-3440 published?

CVE-2008-3440 was published on 2008-08-01 and last updated on 2026-06-16.

CVE-2008-3440

CVE-2008-3440 is a high-severity vulnerability in Sun Java 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-94.

Key facts

Severity: High (CVSS 2.0 base score 7.5)
EPSS exploit prediction: 2% (82nd percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-94
Affected product: Sun Java
Published: 2008-08-01
Last modified: 2026-06-16

Description

Sun Java 1.6.0_03 and earlier versions, and possibly later versions, does not properly verify the authenticity of updates, which allows man-in-the-middle attackers to execute arbitrary code via a Trojan horse update, as demonstrated by evilgrade and DNS cache poisoning.

Frequently asked questions

What is CVE-2008-3440?: Sun Java 1.6.0_03 and earlier versions, and possibly later versions, does not properly verify the authenticity of updates, which allows man-in-the-middle attackers to execute arbitrary code via a Trojan horse update, as demonstrated by evilgrade and DNS cache poisoning.
How severe is CVE-2008-3440?: CVE-2008-3440 has a CVSS 2.0 base score of 7.5, rated high severity.
Is CVE-2008-3440 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (82nd percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2008-3440?: CVE-2008-3440 primarily affects Sun Java. In total, 4 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2008-3440?: 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-2008-3440 published?: CVE-2008-3440 was published on 2008-08-01 and last updated on 2026-06-16.

References

Affected products (4)

cpe:2.3:a:sun:java:*:03:*:*:*:*:*:*
cpe:2.3:a:sun:java:1.6.0:*:*:*:*:*:*:*
cpe:2.3:a:sun:java:1.6.0:01:*:*:*:*:*:*
cpe:2.3:a:sun:java:1.6.0:02:*:*:*:*:*:*

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