CVE-2004-0052

CVE-2004-0052 is a high-severity vulnerability in Clearswift Mailsweeper 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.

Key facts

Description

Multiple content security gateway and antivirus products allow remote attackers to bypass content restrictions via MIME messages that use non-standard separator characters, or use standard separators incorrectly, within MIME headers, fields, parameters, or values, which may be interpreted differently by mail clients.

Frequently asked questions

What is CVE-2004-0052?
Multiple content security gateway and antivirus products allow remote attackers to bypass content restrictions via MIME messages that use non-standard separator characters, or use standard separators incorrectly, within MIME headers, fields, parameters, or values, which may be interpreted differently by mail clients.
How severe is CVE-2004-0052?
CVE-2004-0052 has a CVSS 2.0 base score of 7.5, rated high severity.
Is CVE-2004-0052 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-2004-0052?
CVE-2004-0052 primarily affects Clearswift Mailsweeper. In total, 22 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2004-0052?
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-2004-0052 published?
CVE-2004-0052 was published on 2004-10-20 and last updated on 2026-06-16.

References

Affected products (22)

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