How severe is CVE-2004-2764?

CVE-2004-2764 has a CVSS 2.0 base score of 10.0, rated critical severity.

Is CVE-2004-2764 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-2004-2764?

CVE-2004-2764 primarily affects Sun Jre. In total, 114 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2004-2764?

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-2004-2764 published?

CVE-2004-2764 was published on 2009-06-02 and last updated on 2026-06-16.

CVE-2004-2764

CVE-2004-2764 is a critical-severity vulnerability in Sun Jre with a CVSS 2.0 base score of 10.0. 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: Critical (CVSS 2.0 base score 10.0)
EPSS exploit prediction: 2% (82nd percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-264
Affected product: Sun Jre
Published: 2009-06-02
Last modified: 2026-06-16

Description

Sun SDK and Java Runtime Environment (JRE) 1.4.2 through 1.4.2_04, 1.4.1 through 1.4.1_07, and 1.4.0 through 1.4.0_04 allows untrusted applets and unprivileged servlets to gain privileges and read data from other applets via unspecified vectors related to classes in the XSLT processor, aka "XML sniffing."

Frequently asked questions

What is CVE-2004-2764?: Sun SDK and Java Runtime Environment (JRE) 1.4.2 through 1.4.2_04, 1.4.1 through 1.4.1_07, and 1.4.0 through 1.4.0_04 allows untrusted applets and unprivileged servlets to gain privileges and read data from other applets via unspecified vectors related to classes in the XSLT processor, aka "XML sniffing."
How severe is CVE-2004-2764?: CVE-2004-2764 has a CVSS 2.0 base score of 10.0, rated critical severity.
Is CVE-2004-2764 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-2004-2764?: CVE-2004-2764 primarily affects Sun Jre. In total, 114 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2004-2764?: 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-2004-2764 published?: CVE-2004-2764 was published on 2009-06-02 and last updated on 2026-06-16.

References

Affected products (114)

cpe:2.3:a:sun:jre:1.4.0:*:*:*:*:*:*:*
cpe:2.3:a:sun:jre:1.4.0_01:*:*:*:*:*:*:*
cpe:2.3:a:sun:jre:1.4.0_01:*:linux:*:*:*:*:*
cpe:2.3:a:sun:jre:1.4.0_01:*:solaris:*:*:*:*:*
cpe:2.3:a:sun:jre:1.4.0_01:*:windows:*:*:*:*:*
cpe:2.3:a:sun:jre:1.4.0_02:*:*:*:*:*:*:*
cpe:2.3:a:sun:jre:1.4.0_02:*:linux:*:*:*:*:*
cpe:2.3:a:sun:jre:1.4.0_02:*:solaris:*:*:*:*:*
cpe:2.3:a:sun:jre:1.4.0_02:*:windows:*:*:*:*:*
cpe:2.3:a:sun:jre:1.4.0_03:*:*:*:*:*:*:*
cpe:2.3:a:sun:jre:1.4.0_03:*:linux:*:*:*:*:*
cpe:2.3:a:sun:jre:1.4.0_03:*:solaris:*:*:*:*:*
cpe:2.3:a:sun:jre:1.4.0_03:*:windows:*:*:*:*:*
cpe:2.3:a:sun:jre:1.4.0_04:*:*:*:*:*:*:*
cpe:2.3:a:sun:jre:1.4.0_04:*:linux:*:*:*:*:*
cpe:2.3:a:sun:jre:1.4.0_04:*:solaris:*:*:*:*:*
cpe:2.3:a:sun:jre:1.4.0_04:*:windows:*:*:*:*:*
cpe:2.3:a:sun:jre:1.4.1:*:*:*:*:*:*:*
cpe:2.3:a:sun:jre:1.4.1:*:linux:*:*:*:*:*
cpe:2.3:a:sun:jre:1.4.1:*:solaris:*:*:*:*:*
cpe:2.3:a:sun:jre:1.4.1:*:windows:*:*:*:*:*
cpe:2.3:a:sun:jre:1.4.1:update1:*:*:*:*:*:*
cpe:2.3:a:sun:jre:1.4.1:update2:*:*:*:*:*:*
cpe:2.3:a:sun:jre:1.4.1:update3:*:*:*:*:*:*
cpe:2.3:a:sun:jre:1.4.1:update3:linux:*:*:*:*:*
cpe:2.3:a:sun:jre:1.4.1:update3:solaris:*:*:*:*:*
cpe:2.3:a:sun:jre:1.4.1:update3:windows:*:*:*:*:*
cpe:2.3:a:sun:jre:1.4.1:update4:*:*:*:*:*:*
cpe:2.3:a:sun:jre:1.4.1:update7:*:*:*:*:*:*
cpe:2.3:a:sun:jre:1.4.1_01:*:*:*:*:*:*:*
cpe:2.3:a:sun:jre:1.4.1_01:*:linux:*:*:*:*:*
cpe:2.3:a:sun:jre:1.4.1_01:*:solaris:*:*:*:*:*
cpe:2.3:a:sun:jre:1.4.1_01:*:windows:*:*:*:*:*
cpe:2.3:a:sun:jre:1.4.1_02:*:*:*:*:*:*:*
cpe:2.3:a:sun:jre:1.4.1_02:*:linux:*:*:*:*:*
cpe:2.3:a:sun:jre:1.4.1_02:*:solaris:*:*:*:*:*
cpe:2.3:a:sun:jre:1.4.1_02:*:windows:*:*:*:*:*
cpe:2.3:a:sun:jre:1.4.1_03:*:*:*:*:*:*:*
cpe:2.3:a:sun:jre:1.4.1_03:*:linux:*:*:*:*:*
cpe:2.3:a:sun:jre:1.4.1_03:*:solaris:*:*:*:*:*

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