CVE-2026-78134

Publication date 7 September 2026

Last updated 21 September 2026

Ubuntu priority

Cvss 3 Severity Score

Description

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.

Status

Show unmaintained releases

Package	Ubuntu Release	Status
strongswan	26.04 LTS resolute	Fixed 6.0.4-1ubuntu3.2
	24.04 LTS noble	Fixed 5.9.13-2ubuntu4.24.04.5
	22.04 LTS jammy	Fixed 5.9.5-2ubuntu2.8
	20.04 LTS focal	Needs evaluation
	18.04 LTS bionic	Needs evaluation
	16.04 LTS xenial	Needs evaluation
	14.04 LTS trusty	Needs evaluation

Patch details

For informational purposes only. We recommend not to cherry-pick updates. How can I get the fixes?

Package	Patch details
strongswan	Upstream: https://download.strongswan.org/security/CVE-2026-78134/strongswan-5.5.1-5.9.9_eap_inner_auth_cfg.patch Upstream: https://download.strongswan.org/security/CVE-2026-78134/strongswan-5.9.10-6.0.7_eap_inner_auth_cfg.patch

Severity score breakdown

CVSS version: CVSS v3.0

Base score 7.1 · High

Base metrics

Parameter	Value
Attack vector	Network
Attack complexity	High
Privileges required	Low
User interaction	None
Scope	Unchanged
Confidentiality impact	High
Integrity impact	High
Availability impact	Low

Scores

Parameter	Value
Base score	7.1 · High
Exploitability score	-
Impact score	-

CVE-2026-78134

Cvss 3 Severity Score

Description

Status

Patch details

Severity score breakdown

References

Related Ubuntu Security Notices (USN)

Other references

Access our resources on patching vulnerabilities