# CVE-2022-46393: mbedtls: An issue was discovered in Mbed TLS before 2.28.2 and 3.x before 3.3.0

CVE-2022-46393 is fixed in mbedtls on 1 platform, first by DEBIAN-CVE-2022-46393, released December 15, 2022. It is not reported as exploited. Patch Radar priority: Urgent.

- Web page: https://patchblox.com/security/cve/CVE-2022-46393
- Priority: Urgent
- CVSS: 9.8 (critical)
- EPSS: 0.0126
- CISA KEV: not listed
- Exploited (vendor report): no
- Publicly disclosed: no
- Published: Dec 15, 2022

## Description

An issue was discovered in Mbed TLS before 2.28.2 and 3.x before 3.3.0. There is a potential heap-based buffer overflow and heap-based buffer over-read in DTLS if MBEDTLS_SSL_DTLS_CONNECTION_ID is enabled and MBEDTLS_SSL_CID_IN_LEN_MAX > 2 * MBEDTLS_SSL_CID_OUT_LEN_MAX.

## Where it's fixed

| Platform | Product | Fixed in | Fix | Released |
|---|---|---|---|---|
| Linux | mbedtls Debian 12.15 (bookworm) | 2.28.2-1 | [DEBIAN-CVE-2022-46393](https://patchblox.com/security/data/fix/linux/debian-cve-2022-46393.md) | Dec 15, 2022 |
| Linux | mbedtls Debian 13.5 (trixie) | 2.28.2-1 | [DEBIAN-CVE-2022-46393](https://patchblox.com/security/data/fix/linux/debian-cve-2022-46393.md) | Dec 15, 2022 |
| Linux | mbedtls Debian 14 | 2.28.2-1 | [DEBIAN-CVE-2022-46393](https://patchblox.com/security/data/fix/linux/debian-cve-2022-46393.md) | Dec 15, 2022 |

---

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 Patchblox finds out-of-date software on Windows, macOS and Linux and updates it through release rings: https://patchblox.com/demo

Free to use with attribution: show "Data: Patchblox Patch Radar" with a link to https://patchblox.com/security/patch-radar. Terms, including what needs a written agreement: https://patchblox.com/security/patch-radar/use-the-data

Product names, logos and trademarks shown on Patch Radar belong to their respective owners. They are used only to identify the software each security fix applies to and to help readers find their platform. Their use does not imply any affiliation with, or endorsement by, those owners, and Patchblox is not affiliated with any of them.