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Medium 5.6Published Sep 11, 2026
CVE-2026-78135libcharon in strongSwan 5.9.7 through 6.0.7 mishandles behavioral workflow in the IKEv2 state machine.
Updated under an hour ago ()
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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.
- CVSS
- 5.6 MEDIUM (v3.1, CNA)CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:L
- Weakness (CWE)
- CWE-841
- Known exploited
- Not in CISA's KEV catalog
- EPSS (exploitation in the next 30 days)
- Not loaded for this CVE
- Assigned by
- mitre
- NVD analysis
- Analyzed
- Record last updated
- Sep 15, 2026
- First seen by InfoSec Signals
- Oct 9, 2026
Affected products
strongSwan strongSwan strongswan:strongswan (from the name) | from 5.9.7 before 6.1.0 | CNA record |
strongswan strongswan strongswan:strongswan | from 5.9.7 through 6.0.7 | NVD |
References
- https://github.com/strongswan/strongswan/releases/tag/6.1.0release-notes, vendor-advisory
- https://www.strongswan.org/blog/2026/09/07/strongswan-vulnerability-(cve-2026-78135).htmlvendor-advisory, mitigation
The CVE record on cve.org NVD's entry
The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.