# CVE-2022-46392: mbedtls: An issue was discovered in Mbed TLS before 2.28.2 and 3.x before 3.3.0

CVE-2022-46392 is fixed in mbedtls on 1 platform, first by DEBIAN-CVE-2022-46392, released December 15, 2022. It is not reported as exploited. Patch Radar priority: Routine.

- Web page: https://patchblox.com/security/cve/CVE-2022-46392
- Priority: Routine
- CVSS: 5.3 (medium)
- EPSS: 0.0085
- 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. An adversary with access to precise enough information about memory accesses (typically, an untrusted operating system attacking a secure enclave) can recover an RSA private key after observing the victim performing a single private-key operation, if the window size (MBEDTLS_MPI_WINDOW_SIZE) used for the exponentiation is 3 or smaller.

## Where it's fixed

| Platform | Product | Fixed in | Fix | Released |
|---|---|---|---|---|
| Linux | mbedtls Debian 12.15 (bookworm) | 2.28.2-1 | [DEBIAN-CVE-2022-46392](https://patchblox.com/security/data/fix/linux/debian-cve-2022-46392.md) | Dec 15, 2022 |
| Linux | mbedtls Debian 13.5 (trixie) | 2.28.2-1 | [DEBIAN-CVE-2022-46392](https://patchblox.com/security/data/fix/linux/debian-cve-2022-46392.md) | Dec 15, 2022 |
| Linux | mbedtls Debian 14 | 2.28.2-1 | [DEBIAN-CVE-2022-46392](https://patchblox.com/security/data/fix/linux/debian-cve-2022-46392.md) | Dec 15, 2022 |

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 Patchblox finds out-of-date software on Windows, macOS and Linux and updates it through release rings: https://patchblox.com/demo

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