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Servers and applications

CVE-2009-4501

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.

Severity
Medium 5.0
Published
31 Dec 2009
Last changed
16 Jun 2026
Added to UpHeron
1 Nov 2026
Exploit chance
8.5% in the next 30 daysHigher than 95% of CVEs. EPSS by FIRST, 12 Nov 2026
Weakness
Memory buffer errors (CWE-119)
Attack
Over the network · No login needed
Attacker can
Slow it down
CVSS vector
AV:N/AC:L/Au:N/C:N/I:N/A:P
Sources
NVD

Affected software

SoftwareAffected versions
ZabbixServers and applications · cpe:a:zabbix:zabbix
  • Version 1.6.6
  • Version 1.4.6
  • Version 1.4.4
  • Version 1.4.3
All 10 release lines
  • Every version up to 1.6.7
  • Version 1.1.2
  • Version 1.1.3
  • Version 1.1.4
  • Version 1.1.5
  • Version 1.4.2
  • Version 1.4.3
  • Version 1.4.4
  • Version 1.4.6
  • Version 1.6.6

References

  • NVD https://nvd.nist.gov/vuln/detail/CVE-2009-4501
  • CVE.org https://www.cve.org/CVERecord?id=CVE-2009-4501