# OPENSUSE-SU-2026:21736-1: ucode-intel security update

OPENSUSE-SU-2026:21736-1, released September 2, 2026, fixes 10 CVEs in ucode-intel (version 20260812-160000.1.1). None of them is reported as exploited. Patch Radar priority: High.

- Web page: https://patchblox.com/security/fix/linux/opensuse-su-2026-21736-1
- Platform: Linux
- Released: Sep 2, 2026
- Priority: High (Closes CVE-2026-20713, high severity)
- CVEs: 10, exploited: 0, on CISA KEV: 0
- Vendor advisory: https://osv.dev/vulnerability/openSUSE-SU-2026:21736-1

## Applies to

| Product | Release | Fixed in |
|---|---|---|
| [ucode-intel](https://patchblox.com/security/data/product/linux/ucode-intel.md) | opensuse-leap 16.0 | 20260812-160000.1.1 |

## CVEs this fix closes

| CVE | Priority | Title | CVSS | EPSS | Exploitation |
|---|---|---|---:|---:|---|
| [CVE-2026-20713](https://patchblox.com/security/data/cve/CVE-2026-20713.md) | High | intel-microcode: Always-incorrect control flow implementation in some firmware for some Intel(R) Xeon(R) processors may allow an escal... | 7.5 | 0.0010 |  |
| [CVE-2025-35973](https://patchblox.com/security/data/cve/CVE-2025-35973.md) | High | microcode_ctl: The microcode_ctl packages provide microcode updates for Intel and AMD processors.  Security Fix(es):  * kernel: hype... | 7.2 | 0.0010 |  |
| [CVE-2025-31936](https://patchblox.com/security/data/cve/CVE-2025-31936.md) | High | microcode_ctl: The microcode_ctl packages provide microcode updates for Intel and AMD processors.  Security Fix(es):  * kernel: hype... | 7.2 | 0.0010 |  |
| [CVE-2026-20716](https://patchblox.com/security/data/cve/CVE-2026-20716.md) | High | intel-microcode: Improper access control for some Intel(R) Processors within Ring 3: User Applications may allow an escalation of priv... | 7.0 | 0.0009 |  |
| [CVE-2025-31938](https://patchblox.com/security/data/cve/CVE-2025-31938.md) | High | ucode-intel: This update for ucode-intel fixes the following issues:  - Intel CPU Microcode was updated to the 20260812 release (b... | n/a | 0.0009 |  |
| [CVE-2026-20917](https://patchblox.com/security/data/cve/CVE-2026-20917.md) | Routine | ucode-intel: This update for ucode-intel fixes the following issues:  - Intel CPU Microcode was updated to the 20260812 release (b... | 5.3 | 0.0011 |  |
| [CVE-2026-20760](https://patchblox.com/security/data/cve/CVE-2026-20760.md) | Routine | intel-microcode: Improper handling of overlap between protected memory ranges in some microcode for some Intel(R) Processors within Ri... | 5.5 | 0.0010 |  |
| [CVE-2026-20901](https://patchblox.com/security/data/cve/CVE-2026-20901.md) | Routine | intel-microcode: Improper input validation for some Intel(R) Xeon(R) processors within firmware may allow an escalation of privilege | 5.3 | 0.0010 |  |
| [CVE-2025-35979](https://patchblox.com/security/data/cve/CVE-2025-35979.md) | Routine | ucode-intel: This update for ucode-intel fixes the following issue:  - CVE-2025-35979: data leaks fixed in 20260512 release (bsc#1... | n/a | 0.0010 |  |
| [CVE-2026-20707](https://patchblox.com/security/data/cve/CVE-2026-20707.md) | Routine | intel-microcode: Hardware logic contains race conditions for some 3rd Gen Intel(R) Xeon(R) Scalable Processors within Ring 3: unprivil... | 5.6 | 0.0007 |  |

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Data as of 2026-11-10T13:56:55Z 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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