How severe is CVE-2003-1330?

CVE-2003-1330 has a CVSS 2.0 base score of 5.0, rated medium severity.

Is CVE-2003-1330 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-2003-1330?

CVE-2003-1330 affects Clearswift Limited Mailsweeper. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2003-1330?

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

When was CVE-2003-1330 published?

CVE-2003-1330 was published on 2003-12-31 and last updated on 2026-06-16.

CVE-2003-1330

CVE-2003-1330 is a medium-severity vulnerability in Clearswift Limited Mailsweeper with a CVSS 2.0 base score of 5.0. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low.

Key facts

Severity: Medium (CVSS 2.0 base score 5.0)
EPSS exploit prediction: 1% (70th percentile)
Actively exploited: Not listed in CISA KEV
Affected product: Clearswift Limited Mailsweeper
Published: 2003-12-31
Last modified: 2026-06-16

Description

Clearswift MAILsweeper for SMTP 4.3.6 SP1 does not execute custom "on strip unsuccessful" hooks, which allows remote attackers to bypass e-mail attachment filtering policies via an attachment that MAILsweeper can detect but not remove.

Frequently asked questions

What is CVE-2003-1330?: Clearswift MAILsweeper for SMTP 4.3.6 SP1 does not execute custom "on strip unsuccessful" hooks, which allows remote attackers to bypass e-mail attachment filtering policies via an attachment that MAILsweeper can detect but not remove.
How severe is CVE-2003-1330?: CVE-2003-1330 has a CVSS 2.0 base score of 5.0, rated medium severity.
Is CVE-2003-1330 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-2003-1330?: CVE-2003-1330 affects Clearswift Limited Mailsweeper. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2003-1330?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2003-1330 published?: CVE-2003-1330 was published on 2003-12-31 and last updated on 2026-06-16.

References

Affected products (1)

cpe:2.3:a:clearswift_limited:mailsweeper:4.3.6_sp1:*:smtp:*:*:*:*:*

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