MEDIUMpublic-safe

CVE-2026-78135

NVD: libcharon in strongSwan 5.9.7 through 6.0.7 mishandles behavioral workflow in the IKEv2 state machine. NVD: Because CREATE_CHILD_SA requests are mishandled, there can be an authentication bypass. OSV: libcharon in strongSwan 5.9.7 through 6.0.7 mishandles behavioral workflow in the IKEv2 state machine.

CVSS
5.6 Severity
MEDIUM EPSS
0.0034 (27) KEV
-

Source-published summary

Possible impact

Affected context

vendor/product: strongswan / strongswan

Remediation / advisory

Remediation reference present; patch status requires confirmation in the linked advisory.

Why it matters

Source describes authentication boundary review. Possible impact: This medium severity issue needs human triage to confirm exposure, affected versions, and vendor guidance for authentication boundary review.; CVSS 5.6 (MEDIUM); EPSS percentile 27; not listed in KEV; Remediation reference present; patch status requires confirmation in the linked advisory; sources: NVD, OSV, Vendor Advisory.

What to verify

Confirm affected product/version, vendor advisory, patch or mitigation, and exposure.

Exposure hint

exposure unknown

Impact tags

authentication boundary review

Urgency reasons

affected product presentvendor advisory presentrecent updateremediation reference present

Source-derived note

Summary derived from NVD / OSV / Vendor Advisory description; unsafe procedural detail is not shown.

Redaction metadata

source summary used: True
fallback summary used: False
unsafe procedural detail present: false
raw source displayed: false
public summary redacted: true

Remediation handoff

Public-safe static handoff for human/Codex remediation planning. Scan, patch, external execution, and auto remediation are disabled.

Handoff JSON Handoff Markdown Safe Codex prompt

Safety note

This radar shows source-published defensive context only. Exploit procedures, exploit strings, scanner commands, and auto-remediation are not provided.