# CVE-2025-20053: intel-microcode: Improper buffer restrictions for some Intel(R) Xeon(R) Processor firmwarewith SGX enabled may allow a privileged user...

CVE-2025-20053 is fixed in 3 products on 1 platform, first by intel-microcode 3.20250812.0ubuntu0.18.04.1+esm1, released August 12, 2025. It is not reported as exploited. Patch Radar priority: Routine.

- Web page: https://patchblox.com/security/cve/CVE-2025-20053
- Priority: Routine
- CVSS: n/a (Medium)
- EPSS: 0.0016
- CISA KEV: not listed
- Exploited (vendor report): no
- Publicly disclosed: no
- Published: Aug 12, 2025

## Description

Improper buffer restrictions for some Intel(R) Xeon(R) Processor firmwarewith SGX enabled may allow a privileged user to potentially enableescalation of privilege via local access.

## Where it's fixed

| Platform | Product | Fixed in | Fix | Released |
|---|---|---|---|---|
| Linux | intel-microcode Debian 11.6 (bullseye) | 3.20250812.1~deb11u1 | [DLA-4347-1](https://patchblox.com/security/data/fix/linux/dla-4347-1.md) | Oct 25, 2025 |
| Linux | intel-microcode Debian 12.15 (bookworm) | 3.20250812.1~deb12u1 | [DSA-6030-1](https://patchblox.com/security/data/fix/linux/dsa-6030-1.md) | Oct 22, 2025 |
| Linux | intel-microcode Debian 13.5 (trixie) | 3.20250812.1~deb13u1 | [DSA-6030-1](https://patchblox.com/security/data/fix/linux/dsa-6030-1.md) | Oct 22, 2025 |
| Linux | intel-microcode Debian 14 | 3.20250812.1 | [DEBIAN-CVE-2025-20053](https://patchblox.com/security/data/fix/linux/debian-cve-2025-20053.md) | Aug 12, 2025 |
| Linux | intel-microcode Ubuntu 18.04.6 LTS (bionic) | 3.20250812.0ubuntu0.18.04.1+esm1 | [intel-microcode 3.20250812.0ubuntu0.18.04.1+esm1](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-intel-microcode-3.20250812.0ubuntu0.18.04.1-esm1.md) | Aug 12, 2025 |
| Linux | intel-microcode Ubuntu 20.04 LTS (focal) | 3.20250812.0ubuntu0.20.04.1+esm1 | [intel-microcode 3.20250812.0ubuntu0.20.04.1+esm1](https://patchblox.com/security/data/fix/linux/ubuntu-focal-intel-microcode-3.20250812.0ubuntu0.20.04.1-esm1.md) | Aug 12, 2025 |
| Linux | intel-microcode Ubuntu 22.04.1 LTS (jammy) | 3.20250812.0ubuntu0.22.04.1 | [intel-microcode 3.20250812.0ubuntu0.22.04.1](https://patchblox.com/security/data/fix/linux/ubuntu-jammy-intel-microcode-3.20250812.0ubuntu0.22.04.1.md) | Aug 12, 2025 |
| Linux | intel-microcode Ubuntu 24.04.5 LTS (noble) | 3.20250812.0ubuntu0.24.04.1 | [intel-microcode 3.20250812.0ubuntu0.24.04.1](https://patchblox.com/security/data/fix/linux/ubuntu-noble-intel-microcode-3.20250812.0ubuntu0.24.04.1.md) | Aug 12, 2025 |
| Linux | intel-microcode Ubuntu 25.04 (plucky) | 3.20250812.0ubuntu0.25.04.1 | [intel-microcode 3.20250812.0ubuntu0.25.04.1](https://patchblox.com/security/data/fix/linux/ubuntu-plucky-intel-microcode-3.20250812.0ubuntu0.25.04.1.md) | Jan 16, 2026 |
| Linux | intel-microcode Ubuntu 25.10 (questing) | 3.20250812.0ubuntu0.25.10.1 | [intel-microcode 3.20250812.0ubuntu0.25.10.1](https://patchblox.com/security/data/fix/linux/ubuntu-questing-intel-microcode-3.20250812.0ubuntu0.25.10.1.md) | Aug 12, 2025 |
| Linux | microcode_ctl amzn 2023 | 2:2.1-53.amzn2023.0.13 | [ALAS2023-2025-1190](https://patchblox.com/security/data/fix/linux/alas2023-2025-1190.md) | Sep 10, 2025 |
| Linux | ucode-intel opensuse-leap 15.6 | 20250812-150200.59.1 | [SUSE-SU-2025:03053-1](https://patchblox.com/security/data/fix/linux/suse-su-2025-03053-1.md) | Sep 2, 2025 |
| Linux | ucode-intel sles 15.6 | 20250812-150200.59.1 | [SUSE-SU-2025:03053-1](https://patchblox.com/security/data/fix/linux/suse-su-2025-03053-1.md) | Sep 2, 2025 |
| Linux | ucode-intel sles 15.7 | 20250812-150200.59.1 | [SUSE-SU-2025:03053-1](https://patchblox.com/security/data/fix/linux/suse-su-2025-03053-1.md) | Sep 2, 2025 |

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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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