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CVE-2009-4500

15
FAUCET Score

CVE-2009-4500 describes a denial-of-service vulnerability in Zabbix Server versions prior to 1.6.6. A remote attacker can trigger a NULL pointer dereference in the process_trap function by sending a crafted request lacking an expected colon separator, causing the server to crash. This vulnerability has a CVSS score of 5.0, indicating a medium severity with low attack complexity and no authentication required, leading to a partial availability impact. There is no evidence of active exploitation, public exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion or media coverage surrounding this CVE.

Impacted Technologies

VendorProductVersion(s)CPE
<= 1.4.6CPE matchmatch criteria
cpe:2.3:a:zabbix:zabbix:*:*:*:*:*:*:*:*
1.1.2CPE matchmatch criteria
cpe:2.3:a:zabbix:zabbix:1.1.2:*:*:*:*:*:*:*
1.1.3CPE matchmatch criteria
cpe:2.3:a:zabbix:zabbix:1.1.3:*:*:*:*:*:*:*
1.1.4CPE matchmatch criteria
cpe:2.3:a:zabbix:zabbix:1.1.4:*:*:*:*:*:*:*
1.1.5CPE matchmatch criteria
cpe:2.3:a:zabbix:zabbix:1.1.5:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 2.0

5.0MEDIUM

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

Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
PARTIAL
Access Vector
NETWORK
Access Complexity
LOW
Authentication
NONE
Exploitability Score
10.0
Impact Score
2.9
CvssVersion
2.0

Exploit Intelligence

EPSS Score
2.29%
Probability of exploitation in next 30 days
EPSS Percentile
81.4%
Percentile rank of EPSS score among Peer Group
As of 2026-07-28
Model: v2026.06.15
This CVE's current EPSS score of 0.0229 is in the 72nd percentile among its peer group of 23,725 CVEs.

Social Chatter

No social media mentions found for this CVE.

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.0 Mastodon, and 0.4 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.0 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Remediation records are not available for this CVE.

References

secunia.com / advisories/37740
Vendor Advisory
support.zabbix.com / browse/ZBX-993
Vendor Advisory
securityfocus.com / archive/1/508436/30/60/threaded
vupen.com / english/advisories/2009/3514
Vendor Advisory