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.

Mariner

Read the vendor bulletin Get alerts for azl3 strongswan 5.9.14-10 on Azure Linux

5.6CVSS out of 10Medium severity

Scope

What the vendor says is affected

azl3 strongswan 5.9.14-10 on Azure Linux 3.0

Next step

What the vendor recommends

See the Microsoft Security Update Guide for the update that applies to your product.

Review the complete instructions on the vendor's site

Timeline

When this advisory changed

Sep 12, 2026 at 1:02 AM UTC
Published by Microsoft Security Response Center
The publication date reported by the vendor.
Sep 13, 2026 at 8:45 AM UTC
Added to SecurityAlert
We collected the advisory from the official source.

Vulnerabilities

CVEs named in this advisory

CVE-2026-78135View CVSS, KEV, EPSS, and threat context

Source

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Vendor: Microsoft Security Response Center
Advisory ID: CVE-2026-78135
Last source check: Sep 13, 2026 at 8:45 AM UTC

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Your environment

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Watch azl3 strongswan 5.9.14-10 on Azure Linux

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What the vendor says is affected

What the vendor recommends

When this advisory changed

CVEs named in this advisory

Related advisories from Microsoft Security Response Center

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strongSwan 4.2.0 through 6.0.7 has a NULL pointer dereference in the x509 plugin's attribute certificate parser.

strongSwan 4.6.2 through 6.0.7 has an infinite loop in PKCS#5 decryption.

undici vulnerable to Denial of Service via orphaned RetryHandler response body

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