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CVE-2003-0344

83
FAUCET Score

CVE-2003-0344 describes a critical buffer overflow vulnerability in Microsoft Internet Explorer versions 5.01, 5.5, and 6.0. This flaw allows remote attackers to execute arbitrary code on a user's system by embedding specially crafted '/' characters within the 'Type' property of an Object tag in a malicious web page. With a CVSS score of 7.5, this vulnerability is easily exploitable over the network with low attack complexity, potentially leading to complete compromise of confidentiality, integrity, and availability. While not on the CISA KEV catalog, exploit intelligence indicates readily available public exploit code, including Metasploit modules and multiple entries on ExploitDB, and it has garnered significant community discussion, suggesting its historical importance and potential for exploitation.

Impacted Technologies

VendorProductVersion(s)CPE
6.0CPE matchmatch criteria
cpe:2.3:a:microsoft:ie:6.0:*:windows_server_2003:*:*:*:*:*
5.01CPE matchmatch criteria
cpe:2.3:a:microsoft:internet_explorer:5.01:*:*:*:*:*:*:*
5.5CPE matchmatch criteria
cpe:2.3:a:microsoft:internet_explorer:5.5:*:*:*:*:*:*:*
6.0CPE matchmatch criteria
cpe:2.3:a:microsoft:internet_explorer:6.0:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 2.0

7.5HIGH

AV:N/AC:L/Au:N/C:P/I:P/A:P

Confidentiality Impact
PARTIAL
Integrity Impact
PARTIAL
Availability Impact
PARTIAL
Access Vector
NETWORK
Access Complexity
LOW
Authentication
NONE
Exploitability Score
10.0
Impact Score
6.4
CvssVersion
2.0

Exploit Intelligence

EPSS Score
81.31%
Probability of exploitation in next 30 days
EPSS Percentile
99.6%
Percentile rank of EPSS score among Peer Group
As of 2026-07-25
Model: v2026.06.15
Metasploit: MS03-020 Microsoft Internet Explorer Object Type · Jun 4, 2003
ExploitDB: EDB-16581 · Aug 25, 2010
This CVE's current EPSS score of 0.8131 is in the 99th percentile among its peer group of 51,485 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.1 Mastodon, and 0.4 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

lists.grok.org.uk / pipermail/full-disclosure/2003-July/006401.html
marc.info
docs.microsoft.com / en-us/security-updates/securitybulletins/2003/ms03-020
secunia.com / advisories/8943
oval.cisecurity.org / repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A922
eeye.com / html/Research/Advisories/AD20030604.html
PatchVendor Advisory
kb.cert.org / vuls/id/679556
US Government Resource