CVE-2009-1920 in the critical feed json
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 lo…
published 2009-09-08 17 y ago modified 2026-06-16 4 mo ago also EUVD-2009-1915
- cvss
- 9.3
- version 2.0, NVD
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 21.5%
- EPSS 21.5% chance of exploitation in 30 days, percentile 97%
- public exploits
- 0
- none known
Summary
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."
Exploit prediction
21.51% chance of exploitation in the next 30 days, higher than 97% of all scored CVEs (FIRST EPSS, 2026-11-08).
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| NVD | 2.0 | 9.3 | AV:N/AC:M/Au:N/C:C/I:C/A:C |
Classification
- Weakness
-
- CWE-94 Improper Control of Generation of Code
References
-
docs.microsoft.com
/en-us/security-updates/securitybulletins/2009/ms09-045
vendor-advisory
-
us-cert.gov
/cas/techalerts/TA09-251A.html
third-party-advisory, us-government-resource
-
oval.cisecurity.org
/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A6316
vdb-entry, signature
Sources
- CVE List CVE-2009-1920
- NVD CVE-2009-1920
Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.