NAI WebShield SMTP 4.5 and possibly 4.5 MR1a does not filter improperly MIME encoded email attachments, which could allow remote attackers to bypass filtering and possibly execute arbitrary code in email clients that process the invalid attachments.
Conclusion & alert: CVE-2001-1542 is rated Moderate Risk (55.4/100): CVSS High severity, with medium exploitation likelihood (EPSS 0.91%). 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 | 2025-03-30 | 1.36% | 0.91% | -0.45% |
| 2 | 2025-03-29 | 0.91% | 1.36% | +0.45% |
| 3 | 2025-03-17 | — | 0.91% | — |
Full EPSS history (12 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 |
|---|---|---|---|
| network_associates | webshield_smtp | 4.5 | cpe:2.3:a:network_associates:webshield_smtp:4.5:*:*:*:*:*:*:* |
| network_associates | webshield_smtp | 4.5_mr1a | cpe:2.3:a:network_associates:webshield_smtp:4.5_mr1a:*:*:*:*:*:*:* |