How severe is CVE-2004-2766?

CVE-2004-2766 has a CVSS 2.0 base score of 4.3, rated medium severity.

Is CVE-2004-2766 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (70th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2004-2766?

CVE-2004-2766 primarily affects Sun Iplanet Messaging Server. In total, 2 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2004-2766?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

When was CVE-2004-2766 published?

CVE-2004-2766 was published on 2010-01-28 and last updated on 2026-06-16.

CVE-2004-2766

CVE-2004-2766 is a medium-severity vulnerability in Sun Iplanet Messaging Server with a CVSS 2.0 base score of 4.3. 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-200.

Key facts

Severity: Medium (CVSS 2.0 base score 4.3)
EPSS exploit prediction: 1% (70th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-200
Affected product: Sun Iplanet Messaging Server
Published: 2010-01-28
Last modified: 2026-06-16

Description

Webmail in Sun ONE Messaging Server 6.1 and iPlanet Messaging Server 5.2 before 5.2hf2.02 allows remote attackers to obtain unspecified "access" to e-mail via a crafted e-mail message, related to a "session hijacking" issue, a different vulnerability than CVE-2005-2022 and CVE-2006-5486.

Frequently asked questions

What is CVE-2004-2766?: Webmail in Sun ONE Messaging Server 6.1 and iPlanet Messaging Server 5.2 before 5.2hf2.02 allows remote attackers to obtain unspecified "access" to e-mail via a crafted e-mail message, related to a "session hijacking" issue, a different vulnerability than CVE-2005-2022 and CVE-2006-5486.
How severe is CVE-2004-2766?: CVE-2004-2766 has a CVSS 2.0 base score of 4.3, rated medium severity.
Is CVE-2004-2766 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (70th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2004-2766?: CVE-2004-2766 primarily affects Sun Iplanet Messaging Server. In total, 2 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2004-2766?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2004-2766 published?: CVE-2004-2766 was published on 2010-01-28 and last updated on 2026-06-16.

References

Affected products (2)

cpe:2.3:a:sun:iplanet_messaging_server:5.2:*:*:*:*:*:*:*
cpe:2.3:a:sun:one_messaging_server:6.1:*:*:*:*:*:*:*

More vulnerabilities in Sun Iplanet Messaging Server

CVE-2004-2765 — Medium (CVSS 4.3): Cross-site scripting (XSS) vulnerability in Webmail in Sun ONE Messaging Server 6.1 and iPlanet Messaging Server 5.2…
CVE-2006-5486 — Medium (CVSS 4.3): Cross-site scripting (XSS) vulnerability in Webmail in Sun Java System Messaging Server 6.0 through 6.2 and iPlanet…
CVE-2005-2022 — Medium (CVSS 4.3): Unknown vulnerability in Webmail in iPlanet Messaging Server 5.2 Patch 1 and Sun ONE Messaging Server 6.2 allows remote…
CVE-2006-3159 — Low (CVSS 2.1): pipe_master in Sun ONE/iPlanet Messaging Server 5.2 HotFix 1.16 (built May 14 2003) allows local users to read portions…

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