Vulnerability Monitor

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CVE-2006-4542

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.

Security Impact Summary

CVE-2006-4542 is a security vulnerability that . Impacting 2 products from usermin, from webmin organizations running these solutions should prioritize assessment and patching.

Historical Context

Originally identified in 2006, this vulnerability predates many modern security frameworks and practices. The vulnerability landscape of that era was characterized by different threat models and less mature defense mechanisms compared to contemporary standards.

Published

2006-09-05T23:04:00.000

Last Modified

2026-04-16T00:27:16.627

Status

Modified

Source

[email protected]

Severity

CVSSv2: 6.8 (MEDIUM)

CVSSv2 Vector

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

Access Vector: NETWORK
Access Complexity: MEDIUM
Authentication: NONE
Confidentiality Impact: PARTIAL
Integrity Impact: PARTIAL
Availability Impact: PARTIAL

Exploitability Score

8.6

Impact Score

6.4

Weaknesses

Type: Primary
CWE-79

Affected Vendors & Products

Type	Vendor	Product	Version/Range	Vulnerable?
Application	usermin	usermin	≤ 1.220	Yes
Application	usermin	usermin	0.4	Yes
Application	usermin	usermin	0.5	Yes
Application	usermin	usermin	0.6	Yes
Application	usermin	usermin	0.7	Yes
Application	usermin	usermin	0.8	Yes
Application	usermin	usermin	0.9	Yes
Application	usermin	usermin	0.91	Yes
Application	usermin	usermin	0.92	Yes
Application	usermin	usermin	0.93	Yes
Application	usermin	usermin	0.94	Yes
Application	usermin	usermin	0.95	Yes
Application	usermin	usermin	0.96	Yes
Application	usermin	usermin	0.97	Yes
Application	usermin	usermin	0.98	Yes
Application	usermin	usermin	0.99	Yes
Application	usermin	usermin	1.000	Yes
Application	usermin	usermin	1.010	Yes
Application	usermin	usermin	1.020	Yes
Application	usermin	usermin	1.030	Yes
Application	usermin	usermin	1.040	Yes
Application	usermin	usermin	1.051	Yes
Application	usermin	usermin	1.060	Yes
Application	usermin	usermin	1.070	Yes
Application	usermin	usermin	1.080	Yes
Application	usermin	usermin	1.090	Yes
Application	usermin	usermin	1.100	Yes
Application	usermin	usermin	1.110	Yes
Application	usermin	usermin	1.120	Yes
Application	usermin	usermin	1.130	Yes
Application	usermin	usermin	1.140	Yes
Application	usermin	usermin	1.150	Yes
Application	usermin	usermin	1.210	Yes
Application	webmin	webmin	≤ 1.2.90	Yes
Application	webmin	webmin	0.1	Yes
Application	webmin	webmin	0.2	Yes
Application	webmin	webmin	0.3	Yes
Application	webmin	webmin	0.4	Yes
Application	webmin	webmin	0.5	Yes
Application	webmin	webmin	0.6	Yes
Application	webmin	webmin	0.7	Yes
Application	webmin	webmin	0.21	Yes
Application	webmin	webmin	0.22	Yes
Application	webmin	webmin	0.31	Yes
Application	webmin	webmin	0.41	Yes
Application	webmin	webmin	0.42	Yes
Application	webmin	webmin	0.51	Yes
Application	webmin	webmin	0.76	Yes
Application	webmin	webmin	0.77	Yes
Application	webmin	webmin	0.78	Yes
Application	webmin	webmin	0.79	Yes
Application	webmin	webmin	0.80	Yes
Application	webmin	webmin	0.83	Yes
Application	webmin	webmin	0.84	Yes
Application	webmin	webmin	0.85	Yes
Application	webmin	webmin	0.88	Yes
Application	webmin	webmin	0.90	Yes
Application	webmin	webmin	0.91	Yes
Application	webmin	webmin	0.92	Yes
Application	webmin	webmin	0.92.1	Yes
Application	webmin	webmin	0.93	Yes
Application	webmin	webmin	0.94	Yes
Application	webmin	webmin	0.95	Yes
Application	webmin	webmin	0.96	Yes
Application	webmin	webmin	0.97	Yes
Application	webmin	webmin	0.98	Yes
Application	webmin	webmin	0.99	Yes
Application	webmin	webmin	1.0.00	Yes
Application	webmin	webmin	1.0.10	Yes
Application	webmin	webmin	1.0.20	Yes
Application	webmin	webmin	1.0.30	Yes
Application	webmin	webmin	1.0.40	Yes
Application	webmin	webmin	1.0.50	Yes
Application	webmin	webmin	1.0.51	Yes
Application	webmin	webmin	1.0.60	Yes
Application	webmin	webmin	1.0.70	Yes
Application	webmin	webmin	1.0.80	Yes
Application	webmin	webmin	1.0.90	Yes
Application	webmin	webmin	1.1.00	Yes
Application	webmin	webmin	1.1.10	Yes
Application	webmin	webmin	1.1.20	Yes
Application	webmin	webmin	1.1.21	Yes
Application	webmin	webmin	1.1.30	Yes
Application	webmin	webmin	1.1.40	Yes
Application	webmin	webmin	1.1.50	Yes
Application	webmin	webmin	1.2.20	Yes
Application	webmin	webmin	1.2.30	Yes
Application	webmin	webmin	1.2.40	Yes
Application	webmin	webmin	1.2.50	Yes
Application	webmin	webmin	1.2.60	Yes
Application	webmin	webmin	1.2.70	Yes
Application	webmin	webmin	1.2.80	Yes

References

http://jvn.jp/jp/JVN%2399776858/index.html Patch ([email protected])
http://secunia.com/advisories/21690 Patch, Vendor Advisory ([email protected])
http://secunia.com/advisories/22087 ([email protected])
http://secunia.com/advisories/22114 ([email protected])
http://secunia.com/advisories/22556 ([email protected])
http://securitytracker.com/id?1016776 ([email protected])
http://securitytracker.com/id?1016777 ([email protected])
http://webmin.com/security.html Patch ([email protected])
http://www.debian.org/security/2006/dsa-1199 ([email protected])
http://www.lac.co.jp/business/sns/intelligence/SNSadvisory_e/89_e.html Patch, Vendor Advisory ([email protected])
http://www.mandriva.com/security/advisories?name=MDKSA-2006:170 ([email protected])
http://www.osvdb.org/28337 ([email protected])
http://www.osvdb.org/28338 ([email protected])
http://www.securityfocus.com/bid/19820 ([email protected])
http://www.vupen.com/english/advisories/2006/3424 Vendor Advisory ([email protected])
https://exchange.xforce.ibmcloud.com/vulnerabilities/28699 ([email protected])
http://jvn.jp/jp/JVN%2399776858/index.html Patch (af854a3a-2127-422b-91ae-364da2661108)
http://secunia.com/advisories/21690 Patch, Vendor Advisory (af854a3a-2127-422b-91ae-364da2661108)
http://secunia.com/advisories/22087 (af854a3a-2127-422b-91ae-364da2661108)
http://secunia.com/advisories/22114 (af854a3a-2127-422b-91ae-364da2661108)
http://secunia.com/advisories/22556 (af854a3a-2127-422b-91ae-364da2661108)
http://securitytracker.com/id?1016776 (af854a3a-2127-422b-91ae-364da2661108)
http://securitytracker.com/id?1016777 (af854a3a-2127-422b-91ae-364da2661108)
http://webmin.com/security.html Patch (af854a3a-2127-422b-91ae-364da2661108)
http://www.debian.org/security/2006/dsa-1199 (af854a3a-2127-422b-91ae-364da2661108)
http://www.lac.co.jp/business/sns/intelligence/SNSadvisory_e/89_e.html Patch, Vendor Advisory (af854a3a-2127-422b-91ae-364da2661108)
http://www.mandriva.com/security/advisories?name=MDKSA-2006:170 (af854a3a-2127-422b-91ae-364da2661108)
http://www.osvdb.org/28337 (af854a3a-2127-422b-91ae-364da2661108)
http://www.osvdb.org/28338 (af854a3a-2127-422b-91ae-364da2661108)
http://www.securityfocus.com/bid/19820 (af854a3a-2127-422b-91ae-364da2661108)
http://www.vupen.com/english/advisories/2006/3424 Vendor Advisory (af854a3a-2127-422b-91ae-364da2661108)
https://exchange.xforce.ibmcloud.com/vulnerabilities/28699 (af854a3a-2127-422b-91ae-364da2661108)

How SecUtils Interprets This CVE

SecUtils normalizes and enriches National Vulnerability Database (NVD) records by standardizing vendor and product identifiers, aggregating vulnerability metadata from both NVD and MITRE sources, and providing structured context for security teams. For usermin's affected products, we extract Common Platform Enumeration (CPE) data, Common Weakness Enumeration (CWE) classifications, CVSS severity metrics, and reference data to enable rapid vulnerability prioritization and asset correlation. This record contains no exploit code, proof-of-concept instructions, or attack methodologies—only defensive intelligence necessary for patch management, risk assessment, and security operations.