CVE-2009-4501
The zbx_get_next_field function in libs/zbxcommon/str.c in Zabbix Server before 1.6.8 allows...
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.
Exploit likelihood
What each source reports
NVD Score used
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.
- Record
CVE-2009-4501- CVSS 2.0
- 5.0 Medium
AV:N/AC:L/Au:N/C:N/I:N/A:P - Weakness
- CWE-119
- Updated
- 2026-11-02
CVE List No score
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.
- Record
CVE-2009-4501- Updated
- 2026-11-02
EUVDEUVD-2009-4467 No score
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.
- Record
EUVD-2009-4467- Updated
- 2026-11-03
GitHub AdvisoriesGHSA-m4jh-qvf3-23v6 No score
The zbx_get_next_field function in libs/zbxcommon/str.c in Zabbix Server before 1.6.8 allows...
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.
- Record
GHSA-m4jh-qvf3-23v6- Weakness
- CWE-119
- Updated
- 2026-11-02
OSV No score
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.
- Record
CVE-2009-4501- Updated
- 2026-11-02
OSVDEBIAN-CVE-2009-4501 No score
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.
- Record
DEBIAN-CVE-2009-4501- Updated
- 2026-11-02
Affected products
Affected packages
Public exploits
Links only. Every CVE stores no exploit code.
| Source | Link | Date |
|---|---|---|
| Exploit-DB | Zabbix Server - Multiple Vulnerabilities | 2009-12-14 |
History
| Recorded | Changed | Sources |
|---|---|---|
| aliases | EUVD | |
| first indexed | CVE List, Exploit-DB, GitHub Advisories, NVD, OSV |
Dates are when Every CVE recorded each change. Upstream dates may differ.
In short
CVE-2009-4501 is a medium vulnerability (CVSS 5.0) in Zabbix, published December 31, 2009. Public exploit code exists. EPSS puts the chance of exploitation in the next 30 days at 8.53%, the 95th percentile. Fixed in zabbix 1:1.8-1.