UpHeron
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Servers and applications

CVE-2011-3263

zabbix_agentd in Zabbix before 1.8.6 and 1.9.x before 1.9.4 allows context-dependent attackers to cause a denial of service (CPU consumption) by executing the vfs.file.cksum command for a special device, as demonstrated by the /dev/urandom device.

Severity
Medium 5.0
Published
19 Aug 2011
Last changed
16 Jun 2026
Added to UpHeron
1 Nov 2026
Exploit chance
1.3% in the next 30 daysHigher than 70% of CVEs. EPSS by FIRST, 12 Nov 2026
Weakness
CWE-399
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 1.9.3-alpha
  • Version 1.9.2-alpha
  • Version 1.9.1-alpha
  • Version 1.9.0-alpha
All 71 release lines
  • Every version up to 1.8.5
  • Version 1.1-beta2
  • Version 1.1-beta3
  • Version 1.1-beta4
  • Version 1.1-beta5
  • Version 1.1-beta6
  • Version 1.1-beta7
  • Version 1.1-beta8
  • Version 1.1-beta9
  • Version 1.1-beta10
  • Version 1.1-beta11
  • Version 1.1-beta12
  • Version 1.1
  • Version 1.1.1
  • Version 1.1.2
  • Version 1.1.3
  • Version 1.1.4
  • Version 1.1.5
  • Version 1.1.6
  • Version 1.1.7
  • Version 1.3-beta
  • Version 1.3.1-beta
  • Version 1.3.2-beta
  • Version 1.3.3-beta
  • Version 1.3.4-beta
  • Version 1.3.5-beta
  • Version 1.3.6-beta
  • Version 1.3.7-beta
  • Version 1.3.8-beta
  • Version 1.4.2
  • Version 1.4.3
  • Version 1.4.4
  • Version 1.4.5
  • Version 1.4.6
  • Version 1.5-beta
  • Version 1.5.1-beta
  • Version 1.5.2-beta
  • Version 1.5.3-beta
  • Version 1.5.4-beta
  • Version 1.6
  • Version 1.6.1
  • Version 1.6.2
  • Version 1.6.3
  • Version 1.6.4
  • Version 1.6.5
  • Version 1.6.6
  • Version 1.6.7
  • Version 1.6.8
  • Version 1.6.9
  • Version 1.7
  • Version 1.7.1
  • Version 1.7.2
  • Version 1.7.3
  • Version 1.7.4
  • Version 1.8
  • Version 1.8.1
  • Version 1.8.2
  • Version 1.8.3-rc1
  • Version 1.8.3-rc2
  • Version 1.8.3-rc3
  • Version 1.8.3
  • Version 1.8.4-rc1
  • Version 1.8.4-rc2
  • Version 1.8.4-rc3
  • Version 1.8.4-rc4
  • Version 1.8.4
  • Version 1.8.5-rc1
  • Version 1.9.0-alpha
  • Version 1.9.1-alpha
  • Version 1.9.2-alpha
  • Version 1.9.3-alpha

References

  • NVD https://nvd.nist.gov/vuln/detail/CVE-2011-3263
  • CVE.org https://www.cve.org/CVERecord?id=CVE-2011-3263