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CVE-2009-1920
The JScript scripting engine 5.1, 5.6, 5.7, and 5.8 in JScript.dll in Microsoft Windows, as used in Internet Explorer, does not properly…
High9.3EPSS 21.5%
- Published
- Updated
- Reserved
- Assigned by
- microsoft
Description
The JScript scripting engine 5.1, 5.6, 5.7, and 5.8 in JScript.dll in Microsoft Windows, as used in Internet Explorer, does not properly load decoded scripts into memory before execution, which allows remote attackers to execute arbitrary code via a crafted web site that triggers memory corruption, aka "JScript Remote Code Execution Vulnerability."
Scores
| Scored by | CVSS | Score | Vector |
|---|---|---|---|
| NVDNVD · Modified | 2.0 | High9.3 | AV:N/AC:M/Au:N/C:C/I:C/A:C |
- EPSS (exploitation in 30 days)
- 21.5% · top 2.4% of all CVEs (3 Nov 2026)
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The list uses the assigner's score when there is one, then CISA's, then NVD's: High 9.3.
Weakness
Affected products
n/a
- affected n/a
References (3)
- MS09-045 (opens in a new tab)vendor-advisoryx_refsource_MSx_transferred
- TA09-251A (opens in a new tab)third-party-advisoryx_refsource_CERTx_transferred
- oval:org.mitre.oval:def:6316 (opens in a new tab)vdb-entrysignaturex_refsource_OVALx_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://trackcve.app/cve/CVE-2009-1920)Record last updated .