---
id: CVE-2026-78134
title: >-
  strongSwan 4.5.0 through 6.0.7 has Incorrect Access Control in the eap-ttls
  and eap-peap plugins because there can be a missing or mismatched inner EAP
  identity.
summary: >-
  strongSwan 4.5.0 through 6.0.7 has Incorrect Access Control in the eap-ttls
  and eap-peap plugins because there can be a missing or mismatched inner EAP
  identity.
severity: high
cvss: 7.1
cvssVector: 'CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:L'
cwe:
  - CWE-863
vendor: strongswan
product: strongswan
affected:
  - 'strongswan >= 4.5.0, < 6.1.0'
patched:
  - strongswan 6.1.0
published: '2026-09-11'
updated: '2026-09-14'
sourceUpdated: '2026-09-14T20:06:44.303'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-78134'
references:
  - url: 'https://github.com/strongswan/strongswan/releases/tag/6.1.0'
    label: cve@mitre.org
  - url: >-
      https://www.strongswan.org/blog/2026/09/07/strongswan-vulnerability-(cve-2026-78134).html
    label: cve@mitre.org
tags:
  - nvd
  - cve.org
epss: 0.00318
epssPercentile: 0.22178
ssvc:
  exploitation: none
  automatable: 'no'
  technicalImpact: total
  timestamp: '2026-09-11T14:13:41.050447Z'
ingestedAt: '2026-09-14T02:42:17.806Z'
---

## Overview

strongSwan 4.5.0 through 6.0.7 has Incorrect Access Control in the eap-ttls and eap-peap plugins because there can be a missing or mismatched inner EAP identity.

## Affected

- `strongswan >= 4.5.0, < 6.1.0`

## Remediation

Upgrade past the affected range:

- `strongswan 6.1.0`