What’s Vulnerable › Vulnerabilities

CVE-2001-1581

• Severity: high (CVSS 7.5 v2.0)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 1.3% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2001-12-31 · updated 2026-06-16

Description

The File Blocker feature in Clearswift MAILsweeper for SMTP 4.2 allows remote attackers to bypass e-mail attachment filtering policies via a modified name in a Content-Type header.

Affected products

• Clearswift Limited Mailsweeper: 4.2

References

• http://www.mimesweeper.com/support/technotes/notes/1102.asp
• https://exchange.xforce.ibmcloud.com/vulnerabilities/6801
• http://www.mimesweeper.com/support/technotes/notes/1102.asp
• https://exchange.xforce.ibmcloud.com/vulnerabilities/6801

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