Is CVE-2006-4154 in the CISA KEV catalog?

No. CVE-2006-4154 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2006-4154?

CVE-2006-4154 has a CVSS v2 base score of 6.8 (MEDIUM).

What is the EPSS score for CVE-2006-4154?

CVE-2006-4154 has an EPSS score of 15.86% (96th percentile), estimating the probability of exploitation in the next 30 days.

CVE & CISA-KEV Catalog

CVE-2006-4154

MEDIUMEPSS 96th pctl

6.8

CVSS v2

NVD

Description

Format string vulnerability in the mod_tcl module 1.0 for Apache 2.x allows context-dependent attackers to execute arbitrary code via format string specifiers that are not properly handled in a set_var function call in (1) tcl_cmds.c and (2) tcl_core.c.

CVSS v2 Vector

No CVSS vector data available.

Exploit Intelligence

15.86%probability of exploitation in 30 days

96thpercentile

Very high risk: more likely to be exploited than 96% of all known CVEs.

References

http://labs.idefense.com/intelligence/vulnerabilities/display.php?id=421
http://secunia.com/advisories/22458
http://secunia.com/advisories/22549
http://security.gentoo.org/glsa/glsa-200610-12.xml
http://securitytracker.com/id?1017062
http://www.kb.cert.org/vuls/id/366020
http://www.osvdb.org/29536
http://www.securityfocus.com/bid/20527
http://www.vupen.com/english/advisories/2006/4033
https://exchange.xforce.ibmcloud.com/vulnerabilities/29550

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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 2026-04-23.