CVE-2003-1025: microsoft internet_explorer Improper Input Validation
Vulnerability summary
CVE-2003-1025 is a medium (CVSS 4.3) Improper Input Validation vulnerability in microsoft internet_explorer. EPSS estimates a 26.91% chance of exploitation in the next 30 days, higher than 98% of scored vulnerabilities. 4 public exploits are recorded.
Timeline
- 06-01-2004PublishedVulnerability first disclosed.
- 08-08-2024Last modifiedVulnerability information updated.
Description
Internet Explorer 5.01 through 6 SP1 allows remote attackers to spoof the domain of a URL via a "%01" character before an @ sign in the user@domain portion of the URL, which hides the rest of the URL, including the real site, in the address bar, aka the "Improper URL Canonicalization Vulnerability."
CVSS metrics
1 score · 1 source · 1 versionEPSS trend
Probability
26.91%
Chance of exploitation in the next 30 days
Percentile
98%
Versus all other CVEs
30-day change
0.00 pp
From 26.91% on 21-09-2026
Known exploited
Compare KEV catalogsNot in any of the 3 tracked catalogs.
Public exploits
4 foundExploit Reference (zapthedingbat.com)
Maturity: unknown
Microsoft Internet Explorer 5/6 / Mozilla 1.2.1 - URI Display Obfuscation (1)
Maturity: weaponized
Microsoft Internet Explorer 5/6 / Mozilla 1.2.1 - URI Display Obfuscation (2)
Maturity: weaponized
Weaknesses
CWE · root causeAffected systems
Microsoft1 product
1 vendor · 1 product
References
13 links- oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A510VDB EntrySignatureX Refsource OVAL
- oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A526VDB EntrySignatureX Refsource OVAL
- oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A513VDB EntrySignatureX Refsource OVAL
- oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A491VDB EntrySignatureX Refsource OVAL
- www.us-cert.gov/cas/techalerts/TA04-033A.htmlThird Party AdvisoryX Refsource CERTUS Government Resource
- oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A512VDB EntrySignatureX Refsource OVAL
- oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A490VDB EntrySignatureX Refsource OVAL
Show all 13 references
- docs.microsoft.com/en-us/security-updates/securitybulletins/2004/ms04-004Vendor AdvisoryX Refsource MS
- oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A511VDB EntrySignatureX Refsource OVAL