CVE-2006-3216

Severity: medium (CVSS 5.0 v2.0)
Exploited in the wild: not listed in CISA KEV
EPSS: 1.9% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2006-06-24 · updated 2026-06-16

Description

Clearswift MAILsweeper for SMTP before 4.3.20 and MAILsweeper for Exchange before 4.3.20 allows remote attackers to cause a denial of service via (1) non-ASCII characters in a reverse DNS lookup result from a Received header, which leads to a Receiver service stop, and (2) unspecified vectors involving malformed messages, which causes "unpredictable behavior" that prevents the Security service from processing more messages.

Affected products

Clearswift Mailsweeper For Exchange: through 4.3.19
Clearswift Mailsweeper For Smtp: through 4.3.19

References

http://download.mimesweeper.com/www/TechnicalDocumentation/ReadMe_MSW_4%2C3%2C20.htm
http://secunia.com/advisories/20756
http://www.osvdb.org/26738
http://www.osvdb.org/26739
http://www.securityfocus.com/bid/18584
http://www.vupen.com/english/advisories/2006/2473
https://exchange.xforce.ibmcloud.com/vulnerabilities/27303
https://exchange.xforce.ibmcloud.com/vulnerabilities/27305
http://download.mimesweeper.com/www/TechnicalDocumentation/ReadMe_MSW_4%2C3%2C20.htm
http://secunia.com/advisories/20756
http://www.osvdb.org/26738
http://www.osvdb.org/26739

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