SMTP content filter engines, including (1) GFI MailSecurity for Exchange/SMTP before 7.2, (2) InterScan VirusWall before 3.52 build 1494, (3) the default configuration of MIMEDefang before 2.21, and possibly other products, do not detect fragmented emails as defined in RFC2046 ("Message Fragmentation and Reassembly") and supported in such products as Outlook Express, which allows remote attackers to bypass content filtering, including virus checking, via fragmented emails of the message/partial content type.
Conclusion & alert: CVE-2002-1121 is rated Moderate Risk (55.1/100): CVSS High severity, with medium exploitation likelihood (EPSS 0.94%). Mandatory action: Review affected assets and schedule remediation.
Risk is dynamic; we continuously reassess and refresh what is shown on this page as upstream context changes.
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 | 2025-12-04 | 2.20% | 0.94% | -1.26% |
| 2 | 2025-03-30 | 3.37% | 2.20% | -1.17% |
| 3 | 2025-03-29 | — | 3.37% | — |
Full EPSS history (8 records total)
CVSS metrics for this CVE.
| Base score | Version | Severity | Vector | Exploitability | Impact | Score source |
|---|---|---|---|---|---|---|
| 7.5 | 2.0 | HIGH |
|
10.0 | 6.4 | [email protected] |
| Vendor | Product | Version | Raw CPE |
|---|---|---|---|
| gfi | mailsecurity | 7.2 | cpe:2.3:a:gfi:mailsecurity:7.2:*:exchange_smtp:*:*:*:*:* |
| network_associates | webshield_smtp | 4.0.5 | cpe:2.3:a:network_associates:webshield_smtp:4.0.5:*:*:*:*:*:*:* |
| network_associates | webshield_smtp | 4.5 | cpe:2.3:a:network_associates:webshield_smtp:4.5:*:*:*:*:*:*:* |
| network_associates | webshield_smtp | 4.5.44 | cpe:2.3:a:network_associates:webshield_smtp:4.5.44:*:*:*:*:*:*:* |
| network_associates | webshield_smtp | 4.5.74.0 | cpe:2.3:a:network_associates:webshield_smtp:4.5.74.0:*:*:*:*:*:*:* |
| roaring_penguin | canit | 1.2 | cpe:2.3:a:roaring_penguin:canit:1.2:*:*:*:*:*:*:* |
| roaring_penguin | mimedefang | 2.14 | cpe:2.3:a:roaring_penguin:mimedefang:2.14:*:*:*:*:*:*:* |
| roaring_penguin | mimedefang | 2.20 | cpe:2.3:a:roaring_penguin:mimedefang:2.20:*:*:*:*:*:*:* |
| trend_micro | interscan_viruswall | 3.5 | cpe:2.3:a:trend_micro:interscan_viruswall:3.5:*:*:*:*:*:*:* |
| trend_micro | interscan_viruswall | 3.51 | cpe:2.3:a:trend_micro:interscan_viruswall:3.51:*:*:*:*:*:*:* |
| trend_micro | interscan_viruswall | 3.52 | cpe:2.3:a:trend_micro:interscan_viruswall:3.52:*:*:*:*:*:*:* |