CVE-2018-6534

An issue was discovered in Icinga 2.x through 2.8.1. By sending specially crafted messages, an...

6.5 MediumFix available

CVE-2018-6534 is a medium vulnerability (CVSS 6.5) in Icinga, published February 27, 2018. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 1.08%, the 65th percentile. Fixed in icinga2 2.8.2-r0.

An issue was discovered in Icinga 2.x through 2.8.1. By sending specially crafted messages, an attacker can cause a NULL pointer dereference, which can cause the product to crash.

Attack profile

How easy it is to exploit

Attack vector: Network
Complexity: Low
Privileges needed: None
User interaction: Required

What an attacker can affect

Confidentiality: None
Integrity: None
Availability: High

Exploit likelihood

1.08%Up 0.7 points since Apr 14, 2021

What each source reports

NVD Score used 6.5

An issue was discovered in Icinga 2.x through 2.8.1. By sending specially crafted messages, an attacker can cause a NULL pointer dereference, which can cause the product to crash.

Record: CVE-2018-6534
CVSS 3.0: 6.5 MediumCVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
CVSS 2.0: 4.3 MediumAV:N/AC:M/Au:N/C:N/I:N/A:P
Weakness: CWE-476
Updated: 2026-11-02

CVE List No score

An issue was discovered in Icinga 2.x through 2.8.1. By sending specially crafted messages, an attacker can cause a NULL pointer dereference, which can cause the product to crash.

Record: CVE-2018-6534
Updated: 2026-11-02

EUVDEUVD-2018-18286 No score

An issue was discovered in Icinga 2.x through 2.8.1. By sending specially crafted messages, an attacker can cause a NULL pointer dereference, which can cause the product to crash.

Record: EUVD-2018-18286
Updated: 2026-11-03

GitHub AdvisoriesGHSA-mpx7-h62m-5fwv 6.5

An issue was discovered in Icinga 2.x through 2.8.1. By sending specially crafted messages, an...

An issue was discovered in Icinga 2.x through 2.8.1. By sending specially crafted messages, an attacker can cause a NULL pointer dereference, which can cause the product to crash.

Record: GHSA-mpx7-h62m-5fwv
CVSS 3.0: 6.5 MediumCVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
Weakness: CWE-476
Updated: 2026-11-02

OSVALPINE-CVE-2018-6534 6.5

An issue was discovered in Icinga 2.x through 2.8.1. By sending specially crafted messages, an attacker can cause a NULL pointer dereference, which can cause the product to crash.

Record: ALPINE-CVE-2018-6534
CVSS 3.0: 6.5 MediumCVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
Updated: 2026-11-03

OSV 6.5

An issue was discovered in Icinga 2.x through 2.8.1. By sending specially crafted messages, an attacker can cause a NULL pointer dereference, which can cause the product to crash.

Record: CVE-2018-6534
CVSS 3.0: 6.5 MediumCVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
Updated: 2026-11-02

OSVDEBIAN-CVE-2018-6534 6.5

An issue was discovered in Icinga 2.x through 2.8.1. By sending specially crafted messages, an attacker can cause a NULL pointer dereference, which can cause the product to crash.

Record: DEBIAN-CVE-2018-6534
CVSS 3.0: 6.5 MediumCVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
Updated: 2026-11-02

OSVUBUNTU-CVE-2018-6534 6.5

An issue was discovered in Icinga 2.x through 2.8.1. By sending specially crafted messages, an attacker can cause a NULL pointer dereference, which can cause the product to crash.

Record: UBUNTU-CVE-2018-6534
CVSS 3.0: 6.5 MediumCVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
Updated: 2026-11-02

OSVopenSUSE-SU-2024:10856-1 No score

icinga2-2.13.1-1.3 on GA media

These are all security issues fixed in the icinga2-2.13.1-1.3 package on the GA media of openSUSE Tumbleweed.

Record: openSUSE-SU-2024:10856-1
Updated: 2026-11-02

Affected products

icinga

Affected packages

Affected packages
Package	Affected	Fixed
`icinga2` Alpine:v3.7	before 2.8.2-r0	2.8.2-r0
`icinga2` Debian:12	before 2.8.4-1	2.8.4-1
`icinga2` Debian:13	before 2.8.4-1	2.8.4-1
`icinga2` Debian:14	before 2.8.4-1	2.8.4-1
`icinga` Ubuntu:16.04:LTS	All versions, plus listed versions 1.13.3-11.13.3-21.13.3-2ubuntu0.1	None known
`icinga` Ubuntu:18.04:LTS	All versions, plus listed versions 1.13.4-2build1	None known
`icinga2` openSUSE:Tumbleweed	before 2.13.1-1.3	2.13.1-1.3

History

History
When	Changed	Sources
2026-11-03	affected, aliases, references	OSV
2026-11-03	aliases	EUVD
2026-11-02	created	CVE List, GitHub Advisories, NVD, OSV

References

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