# CVE-2021-33117: intel-microcode: Improper access control for some 3rd Generation Intel(R) Xeon(R) Scalable Processors before BIOS version MR7, may all...

CVE-2021-33117 is fixed in 2 products on 1 platform, first by DEBIAN-CVE-2021-33117, released May 12, 2022. It is not reported as exploited. Patch Radar priority: Routine.

- Web page: https://patchblox.com/security/cve/CVE-2021-33117
- Priority: Routine
- CVSS: 5.5 (medium)
- EPSS: 0.0032
- CISA KEV: not listed
- Exploited (vendor report): no
- Publicly disclosed: no
- Published: May 12, 2022

## Description

Improper access control for some 3rd Generation Intel(R) Xeon(R) Scalable Processors before BIOS version MR7, may allow a local attacker to potentially enable information disclosure via local access.

## Where it's fixed

| Platform | Product | Fixed in | Fix | Released |
|---|---|---|---|---|
| Linux | intel-microcode Debian 12.15 (bookworm) | 3.20220207.1 | [DEBIAN-CVE-2021-33117](https://patchblox.com/security/data/fix/linux/debian-cve-2021-33117.md) | May 12, 2022 |
| Linux | intel-microcode Debian 13.5 (trixie) | 3.20220207.1 | [DEBIAN-CVE-2021-33117](https://patchblox.com/security/data/fix/linux/debian-cve-2021-33117.md) | May 12, 2022 |
| Linux | intel-microcode Debian 14 | 3.20220207.1 | [DEBIAN-CVE-2021-33117](https://patchblox.com/security/data/fix/linux/debian-cve-2021-33117.md) | May 12, 2022 |
| Linux | intel-microcode Ubuntu 18.04.6 LTS (bionic) | 3.20220510.0ubuntu0.18.04.1 | [intel-microcode 3.20220510.0ubuntu0.18.04.1](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-intel-microcode-3.20220510.0ubuntu0.18.04.1.md) | Jun 15, 2022 |
| Linux | intel-microcode Ubuntu 20.04 LTS (focal) | 3.20220510.0ubuntu0.20.04.1 | [intel-microcode 3.20220510.0ubuntu0.20.04.1](https://patchblox.com/security/data/fix/linux/ubuntu-focal-intel-microcode-3.20220510.0ubuntu0.20.04.1.md) | Jun 15, 2022 |
| Linux | intel-microcode Ubuntu 22.04.1 LTS (jammy) | 3.20220510.0ubuntu0.22.04.1 | [intel-microcode 3.20220510.0ubuntu0.22.04.1](https://patchblox.com/security/data/fix/linux/ubuntu-jammy-intel-microcode-3.20220510.0ubuntu0.22.04.1.md) | Jun 15, 2022 |
| Linux | microcode_ctl amzn 2023 | 2:2.1-53.amzn2023 | [ALAS2023-2023-055](https://patchblox.com/security/data/fix/linux/alas2023-2023-055.md) | Feb 17, 2023 |

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Data as of 2026-11-09T01:18:40Z 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 Patchblox finds out-of-date software on Windows, macOS and Linux and updates it through release rings: https://patchblox.com/demo

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