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CVE-2026-78135
Component Overview
Vulnerability Overview
Name
CVE-2026-78135
Source
NVD (
link
)
Debian (
link
)
Description
libcharon in strongSwan 5.9.7 through 6.0.7 mishandles behavioral workflow in the IKEv2 state machine. Because CREATE_CHILD_SA requests are mishandled, there can be an authentication bypass.
CWEs
CWE-841
Published Date
Sep 11, 2026
Updated Date
Sep 16, 2026
Workaround
-
Advisories
https://github.com/strongswan/strongswan/releases/tag/6.1.0
Release Notes
https://www.strongswan.org/blog/2026/09/07/strongswan-vulnerability-(cve-2026-78135).html
Mitigation
Analysis
#
Affected Component
Analysis
strongswan
Exploitable
Vulnerability Ratings
#
5.6
CVSSv31
7.3
CVSSv31
NaN
other
Others affected components
#
Name
Project
Project Version
Version
Status
strongswan
buildroot
2025.02.x
5.9.14
Exploitable
strongswan
buildroot
master
6.0.5
Exploitable
strongswan
openwrt
openwrt-25.12
6.0.7-r1
Exploitable
strongswan
yocto
kirkstone
5.9.13
Exploitable
strongswan
yocto
master
6.0.7
Exploitable
strongswan
yocto
scarthgap
5.9.14
Exploitable