CVE-2018-10811

Name: CVE-2018-10811
Creator: NVD / NIST
Published: 2018-06-19T21:29:00.223+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

HIGHCVSS 7.5/10EPSS 7.41%

Last modified Jun 17, 2026

CVE-2018-10811 is a high-severity vulnerability rated 7.5/10 on the CVSS scale. strongSwan 5.6.0 and older allows Remote Denial of Service because of Missing Initialization of a Variable.. EPSS estimates a 7.41% chance of exploitation in the next 30 days.

Description

strongSwan 5.6.0 and older allows Remote Denial of Service because of Missing Initialization of a Variable.

Metrics

CVSS 3.1

7.5/10

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

EPSS Probability

7.41%

93.7th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-909

Affected Software

Vendor	Product	Versions
Strongswan	Strongswan	>= 5.0.1, < 5.6.3
Debian	Debian Linux	8.0
Debian	Debian Linux	9.0
Canonical	Ubuntu Linux	14.04
Canonical	Ubuntu Linux	16.04
Canonical	Ubuntu Linux	18.04
Fedoraproject	Fedora	28

References

http://lists.opensuse.org/opensuse-security-announce/2019-11/msg00077.htmlBroken Link
http://lists.opensuse.org/opensuse-security-announce/2019-12/msg00001.htmlBroken Link
http://lists.opensuse.org/opensuse-security-announce/2020-03/msg00047.htmlBroken Link
https://download.strongswan.org/security/CVE-2018-10811/Patch, Vendor Advisory
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/UBO6ZQKLB5RY3TV7MXADFTQKXA2LUEIL/
https://security.gentoo.org/glsa/201811-16Third Party Advisory
https://usn.ubuntu.com/3771-1/Third Party Advisory
https://www.debian.org/security/2018/dsa-4229Third Party Advisory
https://www.strongswan.org/blog/2018/05/28/strongswan-vulnerability-%28cve-2018-10811%29.html
http://lists.opensuse.org/opensuse-security-announce/2019-11/msg00077.htmlBroken Link
http://lists.opensuse.org/opensuse-security-announce/2019-12/msg00001.htmlBroken Link
http://lists.opensuse.org/opensuse-security-announce/2020-03/msg00047.htmlBroken Link
https://download.strongswan.org/security/CVE-2018-10811/Patch, Vendor Advisory
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/UBO6ZQKLB5RY3TV7MXADFTQKXA2LUEIL/
https://security.gentoo.org/glsa/201811-16Third Party Advisory
https://usn.ubuntu.com/3771-1/Third Party Advisory
https://www.debian.org/security/2018/dsa-4229Third Party Advisory
https://www.strongswan.org/blog/2018/05/28/strongswan-vulnerability-%28cve-2018-10811%29.html

Timeline

Published: Jun 19, 2018
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2018-10811?

strongSwan 5.6.0 and older allows Remote Denial of Service because of Missing Initialization of a Variable.

How severe is CVE-2018-10811?

CVE-2018-10811 has a CVSS score of 7.5/10 (HIGH severity). The EPSS model estimates a 7.41% probability of exploitation in the next 30 days.

How do I fix CVE-2018-10811?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2018-10811?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST