# CVE-2026-92542: Blind VXLAN injection into encrypted overlay networks from cluster peer

CVE-2026-92542 is fixed in 3 products on 1 platform, first by ALAS2023-2026-3266, released November 7, 2026. It is not reported as exploited. Patch Radar priority: Routine.

- Web page: https://patchblox.com/security/cve/CVE-2026-92542
- Priority: Routine
- CVSS: n/a (Moderate)
- EPSS: 0.0007
- CISA KEV: not listed
- Exploited (vendor report): no
- Publicly disclosed: no
- Published: Oct 11, 2026
- Weakness: Authentication Bypass by Spoofing
- Vendor advisory: https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-92542

## Description

The firewall rules which mark VXLAN datagrams for encryption indiscriminately match both authentic VXLAN datagrams sent from the kernel and forged datagrams sent by user processes. Any packet sent from the host network namespace of a Linux Swarm node is encrypted with the overlay-network IPsec parameters which meets the following criteria

## Where it's fixed

| Platform | Product | Fixed in | Fix | Released |
|---|---|---|---|---|
| Linux | docker amzn 2023 | 25.0.18-1.amzn2023.0.1 | [ALAS2023-2026-3266](https://patchblox.com/security/data/fix/linux/alas2023-2026-3266.md) | Nov 7, 2026 |
| Linux | docker-debuginfo amzn 2023 | 25.0.18-1.amzn2023.0.1 | [ALAS2023-2026-3266](https://patchblox.com/security/data/fix/linux/alas2023-2026-3266.md) | Nov 7, 2026 |
| Linux | docker-debugsource amzn 2023 | 25.0.18-1.amzn2023.0.1 | [ALAS2023-2026-3266](https://patchblox.com/security/data/fix/linux/alas2023-2026-3266.md) | Nov 7, 2026 |

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Data as of 2026-11-11T13:47:35Z UTC. Source: Patchblox Patch Radar (https://patchblox.com/security/patch-radar). Patchblox finds out-of-date software on Windows, macOS and Linux and updates it through release rings: https://patchblox.com/demo

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