Is CVE-2006-1993 in the CISA KEV catalog?

No. CVE-2006-1993 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2006-1993?

CVE-2006-1993 has a CVSS v2 base score of 5.1 (MEDIUM).

What is the EPSS score for CVE-2006-1993?

CVE-2006-1993 has an EPSS score of 51.35% (99th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix CVE-2006-1993?

Upgrade firefox on debian unstable to 1.5.dfsg+1.5.0.3-1 or later.

CVE & CISA-KEV Catalog

CVE-2006-1993

MEDIUMEPSS 99th pctl

5.1

CVSS v2

NVD

Description

Mozilla Firefox 1.5.0.2, when designMode is enabled, allows remote attackers to cause a denial of service and possibly execute arbitrary code via certain Javascript that is not properly handled by the contentWindow.focus method in an iframe, which causes a reference to a deleted controller context object. NOTE: this was originally claimed to be a buffer overflow in (1) js320.dll and (2) xpcom_core.dll, but the vendor disputes this claim.

CWE-399Resource Management Errors

How to fix

Remediation Available

firefoxDebian

Fixed in:1.5.dfsg+1.5.0.3-1CVE-2006-1993

TridentStack Control can deploy fixes like this automatically across your Windows, macOS, and Linux fleet. See how it works

Remediation is compiled from vendor and distribution security advisories. Always confirm against the linked source for your exact version and platform.

CVSS v2 Vector

No CVSS vector data available.

Exploit Intelligence

51.35%probability of exploitation in 30 days

99thpercentile

Very high risk: more likely to be exploited than 99% of all known CVEs.

References

Patch2

Exploit2

Vendor Advisory10

Third-Party Advisory1

kb.cert.org

Other references9

Related Vulnerabilities

Other CWE-399 (Resource Management Errors) vulnerabilities, ordered by exploit likelihood. View all

CVE	Severity	CVSS	EPSS	Exploited	Fix
CVE-2009-3103	High	10.0	90%	-	-
CVE-2009-0075	High	9.3	85%	-	-
CVE-2005-1790	Low	2.6	83%	-	-
CVE-2010-0806	High	8.8	82%	KEV	-
CVE-2009-2526	High	7.8	82%	-	-
CVE-2015-1868	High	7.8	82%	-	Fix

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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 2026-04-16.