HOMEVULNERABILITIESCVE-2006-4542
MEDIUM

CVE-2006-4542

CWE-79Published: September 5, 2006· Updated: Jun 16, 2026

6.8
CVSS v3.1

Official Description

Webmin before 1.296 and Usermin before 1.226 do not properly handle a URL with a null ("%00") character, which allows remote attackers to conduct cross-site scripting (XSS), read CGI program source code, list directories, and possibly execute programs.

NVD Source

Technical Analysis

CVE-2006-4542 can be exploited remotely over the network without requiring physical or adjacent access, significantly expanding the attack surface for threat actors.

Exploitation requires some privileges, which limits the exposure to scenarios where an attacker has already gained initial access.

From a weakness classification perspective (CWE-79): Cross-site scripting (XSS) vulnerabilities allow attackers to inject malicious scripts into web pages viewed by other users.

CVSS v3.1 Vector Breakdown

Exploitability
Attack VectorNetwork
Attack ComplexityM
Privileges Req.
User Interaction
Scope
Impact
ConfidentialityP
IntegrityP
AvailabilityP
AV:N/AC:M/Au:N/C:P/I:P/A:P

Affected Vendors & Products

usermin1 product(s)
usermin
webmin1 product(s)
webmin
Source: NVD CPE · 92 total CPE entries

Exploit & PoC Resources

NO KNOWN EXPLOITNo public exploit confirmed at this time
Exploit-DB
Offensive Security exploit database
GitHub PoC Search
Community PoC repositories
Rapid7 / Metasploit
Metasploit module search
PacketStorm
Security advisories & exploits
NVD Detail
Official NIST entry
MITRE CVE
CVE Program entry
External links open in a new tab. Always verify in a controlled environment before use.

Official Patches & Advisories

PATCHhttp://jvn.jp/jp/JVN%2399776858/index.html
PATCHhttp://secunia.com/advisories/21690
PATCHhttp://webmin.com/security.html
PATCHhttp://www.lac.co.jp/business/sns/intelligence/SNSadvisory_e/89_e.html
PATCHhttp://jvn.jp/jp/JVN%2399776858/index.html
PATCHhttp://secunia.com/advisories/21690
PATCHhttp://webmin.com/security.html
PATCHhttp://www.lac.co.jp/business/sns/intelligence/SNSadvisory_e/89_e.html
ADVISORYhttp://www.vupen.com/english/advisories/2006/3424
ADVISORYhttp://www.vupen.com/english/advisories/2006/3424

All References (32)

→
http://jvn.jp/jp/JVN%2399776858/index.htmlPatch
→
http://secunia.com/advisories/21690Patch · Vendor Advisory
→
http://secunia.com/advisories/22087
→
http://secunia.com/advisories/22114
→
http://secunia.com/advisories/22556
→
http://securitytracker.com/id?1016776
→
http://securitytracker.com/id?1016777
→
http://webmin.com/security.htmlPatch
→
http://www.debian.org/security/2006/dsa-1199
→
http://www.lac.co.jp/business/sns/intelligence/SNSadvisory_e/89_e.htmlPatch · Vendor Advisory
→
http://www.mandriva.com/security/advisories?name=MDKSA-2006:170
→
http://www.osvdb.org/28337
→
http://www.osvdb.org/28338
→
http://www.securityfocus.com/bid/19820
→
http://www.vupen.com/english/advisories/2006/3424Vendor Advisory

Quick Facts

CVE IDCVE-2006-4542
CVSS Score6.8 / 10
SeverityMEDIUM
WeaknessCWE-79
CISA KEVNo
Affected2 vendor(s)
PublishedSep 5, 2006

Related CVEs (CWE-79)

CVE-2021-32671
10.0
CVE-2023-0776
10.0
CVE-2024-6886
10.0
CVE-2011-3046
10.0
CVE-2025-49410
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CVE-2026-50551
9.9

Recommended Actions

  • →Apply vendor patches immediately
  • →Monitor CVE-2006-4542 in threat intel feeds
  • →Review IDS/IPS signatures for exploitation attempts
Data sourced from NVD (NIST), CISA KEV, and EPSS (FIRST). Analysis generated by CTIWATCH.COM. CVE data is provided under the NVD usage policy.
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