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Vulnerability record · CVE-2019-10155 · published 12 June 2019

CVE-2019-10155: Libreswan vulnerability

Libreswan · Libreswan

The Libreswan Project has found a vulnerability in the processing of IKEv1 informational exchange packets which are encrypted and integrity protected using the established IKE SA encryption and integrity keys, but as a receiver, the integrity check value was not verified. This issue affects versions before 3.29.

3.1 CVSS 3.1 Low EPSS 0.50% · top 59.0% CWE-354 · CWE-354
3.1CVSS 3.1 base score, v2 3.5
0.50%EPSS exploitation probability, 30 days
NoNot in CISA KEV
5Affected product versions listed by NVD
10References
17 Jun 2026Last modified by NVD

Description

The Libreswan Project has found a vulnerability in the processing of IKEv1 informational exchange packets which are encrypted and integrity protected using the established IKE SA encryption and integrity keys, but as a receiver, the integrity check value was not verified. This issue affects versions before 3.29.

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

Affected products

5 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
https://access.redhat.com/errata/RHSA-2019:3391 Third Party Advisory
https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2019-10155 Issue TrackingPatchThird Party Advisory
https://libreswan.org/security/CVE-2019-10155/ PatchVendor Advisory
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/EUEXFCN7FAYBKJBQJLYCEUQ
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/LFGPGLLKAXSLWFI62A6BZHT
https://access.redhat.com/errata/RHSA-2019:3391 Third Party Advisory
https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2019-10155 Issue TrackingPatchThird Party Advisory
https://libreswan.org/security/CVE-2019-10155/ PatchVendor Advisory
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/EUEXFCN7FAYBKJBQJLYCEUQ
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/LFGPGLLKAXSLWFI62A6BZHT

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Source: NIST National Vulnerability Database (record CVE-2019-10155), CISA KEV, FIRST EPSS (scores of 2026-10-11). This page is refreshed as NVD updates the record.