| Name | CVE-2026-78135 |
| 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. |
| Source | CVE (at NVD; CERT, ENISA, LWN, oss-sec, fulldisc, Debian ELTS, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, GitHub advisories/code/issues, web search, more) |
| References | DSA-6487-1 |
The table below lists information on source packages.
| Source Package | Release | Version | Status |
|---|---|---|---|
| strongswan (PTS) | bookworm, bookworm (security) | 5.9.8-5+deb12u5 | vulnerable |
| trixie | 6.0.1-6+deb13u6 | vulnerable | |
| trixie (security) | 6.0.1-6+deb13u7 | fixed | |
| forky, sid | 6.1.0-2 | fixed |
The information below is based on the following data on fixed versions.
| Package | Type | Release | Fixed Version | Urgency | Origin | Debian Bugs |
|---|---|---|---|---|---|---|
| strongswan | source | trixie | 6.0.1-6+deb13u7 | DSA-6487-1 | ||
| strongswan | source | (unstable) | 6.1.0-1 |
https://www.strongswan.org/blog/2026/09/07/strongswan-vulnerability-(cve-2026-78135).html
Patches: https://download.strongswan.org/security/CVE-2026-78135/