# CVE-2024-5814: Unverifed Ciphersuite used on a client-side TLS1.3 Downgrade

CVE-2024-5814 is fixed in wolfssl on 1 platform by DEBIAN-CVE-2024-5814 (version 5.7.2-0.1), released August 27, 2024. It is not reported as exploited. Patch Radar priority: Routine.

- Web page: https://patchblox.com/security/cve/CVE-2024-5814
- Priority: Routine
- CVSS: 5.3 (medium)
- EPSS: 0.0047
- CISA KEV: not listed
- Exploited (vendor report): no
- Publicly disclosed: no
- Published: Aug 27, 2024
- Weakness: Improper Access Control
- Vendor advisory: https://msrc.microsoft.com/update-guide/vulnerability/CVE-2024-5814

## Description

A malicious TLS1.2 server can force a TLS1.3 client with downgrade capability to use a ciphersuite that it did not agree to and achieve a successful connection. This is because, aside from the extensions, the client was skipping fully parsing the server hello.  https://doi.org/10.46586/tches.v2024.i1.457-500

## Where it's fixed

| Platform | Product | Fixed in | Fix | Released |
|---|---|---|---|---|
| Linux | wolfssl Debian 13.5 (trixie) | 5.7.2-0.1 | [DEBIAN-CVE-2024-5814](https://patchblox.com/security/data/fix/linux/debian-cve-2024-5814.md) | Aug 27, 2024 |

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Data as of 2026-11-08T13:06:02Z 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 Patchblox finds out-of-date software on Windows, macOS and Linux and updates it through release rings: https://patchblox.com/demo

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