What’s Vulnerable › Vulnerabilities

CVE-2001-0338

• Severity: medium (CVSS 5.1 v2.0)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 5.3% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2001-06-27 · updated 2026-06-16

Description

Internet Explorer 5.5 and earlier does not properly validate digital certificates when Certificate Revocation List (CRL) checking is enabled, which could allow remote attackers to spoof trusted web sites, aka the "Server certificate validation vulnerability."

Affected products

• Microsoft Internet Explorer 11: through 5.5; 5.01

References

• http://www.ciac.org/ciac/bulletins/l-087.shtml
• http://www.securityfocus.com/bid/2735
• https://docs.microsoft.com/en-us/security-updates/securitybulletins/2001/ms01-027
• https://exchange.xforce.ibmcloud.com/vulnerabilities/6555
• http://www.ciac.org/ciac/bulletins/l-087.shtml
• http://www.securityfocus.com/bid/2735
• https://docs.microsoft.com/en-us/security-updates/securitybulletins/2001/ms01-027
• https://exchange.xforce.ibmcloud.com/vulnerabilities/6555

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