Is CVE-2009-1920 in the CISA KEV catalog?

No. CVE-2009-1920 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2009-1920?

CVE-2009-1920 has a CVSS v2 base score of 9.3 (HIGH).

What is the EPSS score for CVE-2009-1920?

CVE-2009-1920 has an EPSS score of 21.51% (97th percentile), estimating the probability of exploitation in the next 30 days.

CVE & CISA-KEV Catalog

CVE-2009-1920

HIGHEPSS 97th pctl

9.3

CVSS v2

NVD

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."

CWE-94Code Injection

CVSS v2 Vector

No CVSS vector data available.

Exploit Intelligence

21.51%probability of exploitation in 30 days

97thpercentile

Very high risk: more likely to be exploited than 97% of all known CVEs.

References

Find and fix vulnerabilities across your fleet

TridentStack Control continuously scans your Windows, macOS, and Linux fleet for known vulnerabilities, prioritizes them by severity and active exploitation, and patches them automatically.

Start free

This product uses NVD data but is not endorsed or certified by the NVD. EPSS scores courtesy of FIRST.org (https://www.first.org/epss). Source: CISA KEV Catalog. Data as of 2026-04-23.