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Vulnerability record · CVE-2006-4154 · published 16 October 2006

CVE-2006-4154: Apache http server vulnerability

Apache · Http Server

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.

6.8 CVSS 2.0 Medium EPSS 16% · top 3.1%
6.8CVSS 2.0 base score
16%EPSS exploitation probability, 30 days
NoNot in CISA KEV
1Affected product versions listed by NVD
20References
16 Jun 2026Last modified by 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.

AV:N/AC:M/Au:N/C:P/I:P/A:P

Affected products

1 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
http://labs.idefense.com/intelligence/vulnerabilities/display.php?id=421 PatchVendor Advisory
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 US Government Resource
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
http://labs.idefense.com/intelligence/vulnerabilities/display.php?id=421 PatchVendor Advisory
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 US Government Resource
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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Related vulnerabilities

Same products first, then exploited flaws of the same weakness class.

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Source: NIST National Vulnerability Database (record CVE-2006-4154), CISA KEV, FIRST EPSS (scores of 2026-09-26). This page is refreshed as NVD updates the record.