CVE-2003-1378

Exp

Microsoft Outlook Express 6.0 and Outlook 2000, with the security zone set to Internet Zone, allows remote attackers to execute arbitrary programs via an HTML email with the CODEBASE parameter set to the program, a vulnerability similar to CAN-2002-0077.

Published: 2003-12-31 Last update: 2026-04-16 Assigner: [email protected] Source: [email protected]
NVD Status：Modified，CVE State: published
View at NVD, CVE.org, EUVD

CVE-2003-1378 is rated High Exploit Risk (89.3/100): CVSS High severity, with high exploitation likelihood (EPSS 42.30%, 97th percentile). 3 public exploit reference(s) are indexed (Exploit-DB). EPSS rose +15.51% over the last day, indicating growing attacker interest. Public exploits are available—assess exposure, apply mitigations, and prioritize patching.

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

Public exploit references (Exploit-DB) for CVE-2003-1378

EDB-ID Source Kind Published Link
22280 exploit_db edb 2003-02-24 Exploit-DB ↗
— nvd_ref exploit_tag Exploit-DB ↗
— nvd_ref exploit_tag Exploit-DB ↗

Exploit prediction scoring system (EPSS) score for CVE-2003-1378

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 2026-05-02 26.80% 42.30% +15.51%
2 2026-03-16 38.01% 26.80% -11.21%
3 2025-08-20 — 38.01% —

Full EPSS history (23 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2003-1378

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
8.8 2.0 HIGH
AV:N/AC:M/Au:N/C:C/I:C/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:C)
Complete confidentiality impact.
Integrity impact (I:C)
Complete integrity impact.
Availability impact (A:N)
No availability impact.
 8.6 9.2 [email protected]

Weakness enumeration for CVE-2003-1378

Affected software / configurations for CVE-2003-1378

Vendor Product Version Raw CPE
microsoft outlook 2000 cpe:2.3:a:microsoft:outlook:2000:*:*:*:*:*:*:*
microsoft outlook 2000 cpe:2.3:a:microsoft:outlook:2000:sp2:*:*:*:*:*:*
microsoft outlook 2000 cpe:2.3:a:microsoft:outlook:2000:sr1:*:*:*:*:*:*
microsoft outlook_express 6.0 cpe:2.3:a:microsoft:outlook_express:6.0:*:*:*:*:*:*:*

References for CVE-2003-1378

cvelogic Threat Intelligence