Is CVE-2006-3740 in the CISA KEV catalog?

No. CVE-2006-3740 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2006-3740?

CVE-2006-3740 has a CVSS v2 base score of 7.2 (HIGH).

What is the EPSS score for CVE-2006-3740?

CVE-2006-3740 has an EPSS score of 0.50% (39th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix CVE-2006-3740?

Upgrade libxfont on debian 11 to 1:1.2.2-1 or later.

CVE & CISA-KEV Catalog

CVE-2006-3740

HIGH

7.2

CVSS v2

NVD

Description

Integer overflow in the scan_cidfont function in X.Org 6.8.2 and XFree86 X server allows local users to execute arbitrary code via crafted (1) CMap and (2) CIDFont font data with modified item counts in the (a) begincodespacerange, (b) cidrange, and (c) notdefrange sections.

How to fix

Remediation Available

libxfontDebian

Fixed in:1:1.2.2-1CVE-2006-3740

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

0.50%probability of exploitation in 30 days

39thpercentile

Low risk: more likely to be exploited than 39% of all known CVEs.

References

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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.