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CVE-2001-0643
Internet Explorer 5.5 does not display the Class ID (CLSID) when it is at the end of the file name, which could allow attackers to trick…
Medium5.0EPSS 11.4%
- Published
- Updated
- Reserved
- Assigned by
- mitre
Description
Internet Explorer 5.5 does not display the Class ID (CLSID) when it is at the end of the file name, which could allow attackers to trick the user into executing dangerous programs by making it appear that the document is of a safe file type.
Timeline
ID reserved
By mitre
- 3 years later
· 3 years later
Published
- 20 years later
· 20 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 | Medium5.0 | AV:N/AC:L/Au:N/C:N/I:P/A:N |
- EPSS (exploitation in 30 days)
- 11.4% · top 4.0% 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 5.0.
Weakness
- n/a
Affected products
n/a
- affected n/a
References (7)
- ie-clsid-execute-files(6426) (opens in a new tab)vdb-entryx_refsource_XFx_transferred
- http://www.guninski.com/clsidext.html (opens in a new tab)x_refsource_MISCx_transferred
- http://vil.nai.com/vil/virusSummary.asp?virus_k=99048 (opens in a new tab)x_refsource_MISCx_transferred
- http://www.sarc.com/avcenter/venc/data/vbs.postcard%40mm.html (opens in a new tab)x_refsource_MISCx_transferred
- 2612 (opens in a new tab)vdb-entryx_refsource_BIDx_transferred
- 20010416 Double clicking on innocent looking files may be dangerous (opens in a new tab)mailing-listx_refsource_BUGTRAQx_transferred
- 7858 (opens in a new tab)vdb-entryx_refsource_OSVDBx_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-2001-0643)Record last updated .