CVE-2006-2221

A third-party installer generation tool, possibly BitRock InstallBuilder, as used in products including Process-one ejabberd 1.1.1_1 and earlier, generates an installer that allows local users to cause a denial of service via a symlink attack on the bitrock_installer.log temporary file. NOTE: it is possible that this vulnerability is present in other products that use this installer.

Published: 2006-05-05 Last update: 2026-04-16 Assigner: [email protected] Source: [email protected]
NVD Status：Modified，CVE State: published
View at NVD, CVE.org, EUVD

CVE-2006-2221 is rated Low Risk (14.7/100): CVSS Low severity, with low exploitation likelihood (EPSS 0.07%). Low composite risk—no urgent action required; patch on your normal maintenance cycle and revisit priority if CVSS or EPSS increases.

Risk is dynamic; we continuously reassess and refresh what is shown on this page as upstream context changes.

Exploit prediction scoring system (EPSS) score for CVE-2006-2221

EPSS lead: Daily EPSS estimates relative likelihood of exploitation; percentile ranks this CVE among scored vulnerabilities (higher = more severe relative rank).

# Date Old EPSS score New EPSS score Delta (New - Old)
1 2025-03-17 0.04% 0.07% +0.03%
2 2024-12-17 0.06% 0.04% -0.02%
3 2023-09-28 — 0.06% —

Full EPSS history (5 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2006-2221

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
2.1 2.0 LOW
AV:L/AC:L/Au:N/C:N/I:N/A:P Click to expand
Access vector (AV:L)
Requires local access to the target system.
Access complexity (AC:L)
Exploitation conditions are straightforward and predictable.
Authentication (AU:N)
No authentication is required.
Confidentiality impact (C:N)
No confidentiality impact.
Integrity impact (I:N)
No integrity impact.
Availability impact (A:P)
Partial availability impact.
 3.9 2.9 [email protected]

Weakness enumeration for CVE-2006-2221

OS Trackers for CVE-2006-2221

vendor priority summary link
debian unimportant CVE-2006-2221 unimportant priority: Debian including 1 source packages (ejabberd), 5 status rows across 5 suites (bookworm, bullseye, forky, sid, trixie): resolved 5. https://security-tracker.debian.org/tracker/CVE-2006-2221

NVD evaluator notes for CVE-2006-2221

Solution: This vulnerability is addressed in the following product releases: Process-one, ejabberd, 1.1.1_2 BitRock, Install Builder, 3.7.0

Affected software / configurations for CVE-2006-2221

Vendor Product Version Raw CPE
bitrock install_builder <= 3.6.0 cpe:2.3:a:bitrock:install_builder:*:*:*:*:*:*:*:*
process-one ejabberd <= 1.1.1.1 cpe:2.3:a:process-one:ejabberd:*:*:*:*:*:*:*:*
process-one ejabberd 1.1.1.0 cpe:2.3:a:process-one:ejabberd:1.1.1.0:*:*:*:*:*:*:*

References for CVE-2006-2221

cvelogic Threat Intelligence