CVE-2004-2703

Clearswift MIMEsweeper 5.0.5, when it has been upgraded from MAILsweeper for SMTP version 4.3 or MAILsweeper Business Suite I or II, allows remote attackers to bypass scanning by including encrypted data in a mail message, which causes the message to be marked as "Clean" instead of "Encrypted".

Published: 2004-12-31 Last update: 2026-06-16 Assigner: [email protected] Source: [email protected]
NVD Status：Modified，CVE State: published
View at NVD, CVE.org, EUVD

CVE-2004-2703 is rated Low Risk (39.2/100): CVSS Medium severity, with medium exploitation likelihood (EPSS 1.12%). Monitor for updates and reassess as exploit intelligence or EPSS changes.

Risk is dynamic; we continuously reassess and refresh what is shown on this page as upstream context changes.

Exploit prediction scoring system (EPSS) score for CVE-2004-2703

EPSS lead: Daily EPSS estimates relative likelihood of exploitation; percentile ranks this CVE among scored vulnerabilities (higher = more severe relative rank).

# Date Old EPSS score New EPSS score Delta (New - Old)
1 2026-06-15 0.76% 1.12% +0.36%
2 2026-05-25 0.34% 0.76% +0.42%
3 2025-12-21 — 0.34% —

Full EPSS history (15 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2004-2703

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
4.3 2.0 MEDIUM
AV:N/AC:M/Au:N/C:N/I:P/A:N Click to expand
Access vector (AV:N)
Can be exploited remotely over network reachability.
Access complexity (AC:M)
Exploitation needs some favorable conditions, but not exceptional ones.
Authentication (AU:N)
No authentication is required.
Confidentiality impact (C:N)
No confidentiality impact.
Integrity impact (I:P)
Partial integrity impact.
Availability impact (A:N)
No availability impact.
 8.6 2.9 [email protected]

Weakness enumeration for CVE-2004-2703

Affected software / configurations for CVE-2004-2703

Vendor Product Version Raw CPE
clearswift mailsweeper_business_suite_i — cpe:2.3:a:clearswift:mailsweeper_business_suite_i:*:*:*:*:*:*:*:*
clearswift mailsweeper_business_suite_ii — cpe:2.3:a:clearswift:mailsweeper_business_suite_ii:*:*:*:*:*:*:*:*
clearswift mailsweeper_for_smtp 4.3 cpe:2.3:a:clearswift:mailsweeper_for_smtp:4.3:*:*:*:*:*:*:*
clearswift mimesweeper_for_web 5.0.5 cpe:2.3:a:clearswift:mimesweeper_for_web:5.0.5:*:*:*:*:*:*:*

References for CVE-2004-2703

cvelogic Threat Intelligence