CVE-2009-4501

Name: CVE-2009-4501
Creator: NVD / NIST
Published: 2009-12-31T18:30:01.767+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

UnknownEPSS 8.53%

Last modified Jun 16, 2026

CVE-2009-4501 is a vulnerability of currently unknown severity. The zbx_get_next_field function in libs/zbxcommon/str.c in Zabbix Server before 1.6.8 allows remote attackers to cause a denial of service (crash) via a request that lacks expected separators, which triggers a NULL pointer dereference, as demonstrated using the Command keyword.. EPSS estimates a 8.53% chance of exploitation in the next 30 days.

Description

The zbx_get_next_field function in libs/zbxcommon/str.c in Zabbix Server before 1.6.8 allows remote attackers to cause a denial of service (crash) via a request that lacks expected separators, which triggers a NULL pointer dereference, as demonstrated using the Command keyword.

Metrics

EPSS Probability

8.53%

94.4th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-119

Affected Software

Vendor	Product	Versions
Zabbix	Zabbix	<= 1.6.7
Zabbix	Zabbix	1.1.2
Zabbix	Zabbix	1.1.3
Zabbix	Zabbix	1.1.4
Zabbix	Zabbix	1.1.5
Zabbix	Zabbix	1.4.2
Zabbix	Zabbix	1.4.3
Zabbix	Zabbix	1.4.4
Zabbix	Zabbix	1.4.6
Zabbix	Zabbix	1.6.6

References

http://secunia.com/advisories/37740Vendor Advisory
http://www.securityfocus.com/archive/1/508436/30/60/threadedPatch
http://www.vupen.com/english/advisories/2009/3514Vendor Advisory
https://support.zabbix.com/browse/ZBX-1355
http://secunia.com/advisories/37740Vendor Advisory
http://www.securityfocus.com/archive/1/508436/30/60/threadedPatch
http://www.vupen.com/english/advisories/2009/3514Vendor Advisory
https://support.zabbix.com/browse/ZBX-1355

Timeline

Published: Dec 31, 2009
Last Modified: Jun 16, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2009-4501?

How severe is CVE-2009-4501?

Severity scoring for CVE-2009-4501 is pending analysis. The EPSS model estimates a 8.53% probability of exploitation in the next 30 days.

How do I fix CVE-2009-4501?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2009-4501?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST