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CVE-2003-1378

39
FAUCET Score

CVE-2003-1378 describes a critical vulnerability in Microsoft Outlook Express 6.0 and Outlook 2000, allowing remote attackers to execute arbitrary programs. This occurs when the security zone is set to "Internet Zone" and a malicious HTML email leverages the CODEBASE parameter. The vulnerability carries a high CVSS score of 8.8, indicating a network-based attack with medium complexity but high impact on confidentiality and integrity. While not listed in CISA's KEV catalog, public exploit code exists, though there is minimal community discussion or media coverage surrounding this older vulnerability.

Impacted Technologies

VendorProductVersion(s)CPE
2000CPE matchmatch criteria
cpe:2.3:a:microsoft:outlook:2000:*:*:*:*:*:*:*
2000CPE matchmatch criteria
cpe:2.3:a:microsoft:outlook:2000:sp2:*:*:*:*:*:*
2000CPE matchmatch criteria
cpe:2.3:a:microsoft:outlook:2000:sr1:*:*:*:*:*:*
6.0CPE matchmatch criteria
cpe:2.3:a:microsoft:outlook_express:6.0:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 2.0

8.8HIGH

AV:N/AC:M/Au:N/C:C/I:C/A:N

Confidentiality Impact
COMPLETE
Integrity Impact
COMPLETE
Availability Impact
NONE
Access Vector
NETWORK
Access Complexity
MEDIUM
Authentication
NONE
Exploitability Score
8.6
Impact Score
9.2
CvssVersion
2.0

Exploit Intelligence

EPSS Score
15.58%
Probability of exploitation in next 30 days
EPSS Percentile
96.5%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
ExploitDB: EDB-22280 · Feb 24, 2003
This CVE's current EPSS score of 0.1558 is in the 81st percentile among its peer group of 8,915 CVEs.

Social Chatter

No social media mentions found for this CVE.

The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.1 Bluesky, 0.0 Mastodon, and 0.2 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Remediation records are not available for this CVE.

References

exchange.xforce.ibmcloud.com / vulnerabilities/11411
securityfocus.com / archive/1/312910
Exploit
securityfocus.com / archive/1/312929
securityfocus.com / bid/6923
Exploit