CVE-2026-78133

Use-After-Free in strongSwan IKEv2 Rekeying Collision Handling

Published Sep 11, 2026 CVSS 3.1 · 7.5 High EPSS < 1% KEV · Not listed
Description
libcharon in strongSwan 6.0.0 through 6.0.7 has a use-after-free in IKEv2 rekeying collision handling.

Remediation

No solution or workaround provided in the CVE record

Tracking

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Advisories

Source ID Title
Debian DSA Debian DSA DSA-6487-1 strongswan security update
Ubuntu USN Ubuntu USN USN-8789-1 strongSwan vulnerabilities
History
Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'total'}, 'version': '2.0.3'}

Type Values Removed Values Added
Title Use-After-Free in strongSwan IKEv2 Rekeying Collision Handling
Type Values Removed Values Added
Description libcharon in strongSwan 6.0.0 through 6.0.7 has a use-after-free in IKEv2 rekeying collision handling.
First Time appeared Strongswan
Strongswan strongswan
Weaknesses CWE-416
CPEs cpe:2.3:a:strongswan:strongswan:*:*:*:*:*:*:*:*
Vendors & Products Strongswan
Strongswan strongswan
References
Metrics cvssV3_1

{'score': 7.5, 'vector': 'CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H'}

Weaknesses

Sources

Status
PUBLISHED
Assigner
mitre
Published
Updated
Sep 11, 2026, 4:54 PM
Reserved
Aug 22, 2026, 11:37 PM
Status
Analyzed
Published
Sep 11, 2026, 2:18 AM
Modified
Sep 14, 2026, 8:07 PM