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CVE-2001-0338
Internet Explorer 5.5 and earlier does not properly validate digital certificates when Certificate Revocation List (CRL) checking is…
Medium5.1EPSS 5.3%
- Published
- Updated
- Reserved
- Assigned by
- mitre
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."
Timeline
ID reserved
By mitre
- 4 months later
· 4 months later
Published
- 23 years later
· 23 years later
Record updated
Changes after publication (a new score, a public exploit, EPSS crossing 1, 10 or 50 %, leaving KEV) are kept since November 2026; earlier ones are not known.
Scores
| Scored by | CVSS | Score | Vector |
|---|---|---|---|
| NVDNVD · Modified | 2.0 | Medium5.1 | AV:N/AC:H/Au:N/C:P/I:P/A:P |
- EPSS (exploitation in 30 days)
- 5.3% · top 7.3% of all CVEs (8 Nov 2026)
Loading the EPSS history…
The list uses the assigner's score when there is one, then CISA's, then NVD's: Medium 5.1.
Weakness
- n/a
Affected products
n/a
- affected n/a
References (4)
- MS01-027 (opens in a new tab)vendor-advisoryx_refsource_MSx_transferred
- ie-crl-certificate-spoofing(6555) (opens in a new tab)vdb-entryx_refsource_XFx_transferred
- 2735 (opens in a new tab)vdb-entryx_refsource_BIDx_transferred
- L-087 (opens in a new tab)third-party-advisorygovernment-resourcex_refsource_CIACx_transferred
Sources
The same CVE in the primary databases and aggregators, to check against.
- CVE.org record (opens in a new tab)
- CVE List JSON (GitHub) (opens in a new tab)
- NVD (opens in a new tab)
- FIRST EPSS (opens in a new tab)
- OSV.dev (opens in a new tab)
- GitHub Advisories (opens in a new tab)
- CIRCL Vulnerability-Lookup (opens in a new tab)
Badge for a README or a ticket
[](https://cveledger.app/cve/CVE-2001-0338)Record last updated .