UpHeron
All vulnerabilities

Servers and applications

CVE-2006-4154

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.

Severity
Medium 6.8
Published
16 Oct 2006
Last changed
16 Jun 2026
Added to UpHeron
17 Oct 2026
Exploit chance
16% in the next 30 daysHigher than 97% of CVEs. EPSS by FIRST, 12 Nov 2026
Attack
Over the network · No login needed
Attacker can
Read some data · Change some data · Slow it down
CVSS vector
AV:N/AC:M/Au:N/C:P/I:P/A:P
Sources
NVD

Affected software

SoftwareAffected versions
Apache HTTP ServerServers and applications · cpe:a:apache:http_server
  • Version 2.2.3
  • Version 2.2.2
  • Version 2.2.1
  • Version 2.2
All 42 release lines
  • Version 2.0
  • Version 2.0.9
  • Version 2.0.28-beta
  • Version 2.0.28
  • Version 2.0.32-beta
  • Version 2.0.32
  • Version 2.0.34-beta
  • Version 2.0.35
  • Version 2.0.36
  • Version 2.0.37
  • Version 2.0.38
  • Version 2.0.39
  • Version 2.0.40
  • Version 2.0.41
  • Version 2.0.42
  • Version 2.0.43
  • Version 2.0.44
  • Version 2.0.45
  • Version 2.0.46
  • Version 2.0.47
  • Version 2.0.48
  • Version 2.0.49
  • Version 2.0.50
  • Version 2.0.51
  • Version 2.0.52
  • Version 2.0.53
  • Version 2.0.54
  • Version 2.0.55
  • Version 2.0.56
  • Version 2.0.57
  • Version 2.0.58
  • Version 2.1
  • Version 2.1.1
  • Version 2.1.2
  • Version 2.1.3
  • Version 2.1.4
  • Version 2.1.5
  • Version 2.1.6
  • Version 2.2
  • Version 2.2.1
  • Version 2.2.2
  • Version 2.2.3

References

  • NVD https://nvd.nist.gov/vuln/detail/CVE-2006-4154
  • CVE.org https://www.cve.org/CVERecord?id=CVE-2006-4154