{
  "cveId": "CVE-2025-35973",
  "url": "https://patchblox.com/security/cve/CVE-2025-35973",
  "summary": "CVE-2025-35973 is fixed in 3 products on 1 platform, first by RHSA-2026:67979, released August 11, 2026. It is not reported as exploited. Patch Radar priority: High.",
  "title": "microcode_ctl: The microcode_ctl packages provide microcode updates for Intel and AMD processors.\n\nSecurity Fix(es):\n\n* kernel: hype...",
  "description": "The microcode_ctl packages provide microcode updates for Intel and AMD processors.\n\nSecurity Fix(es):\n\n* kernel: hypervisor: Intel Processors: Privilege escalation in Ring 0 via improper value handling (CVE-2025-35973)\n\n* kernel: microcode_ctl: Intel Xeon 6 Processors: Privilege escalation via improper memory range handling in SMM (CVE-2025-31936)\n\nBug Fix(es) and Enhancement(s):\n\n* [RHEL 8] Update Intel CPU microcode to the latest version (JIRA:RHEL-240770)\n\nFor more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.",
  "published": "2026-08-11T16:28:25Z",
  "severity": "Important",
  "cvss": 7.2,
  "cvssVector": "CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:C/C:H/I:H/A:N",
  "epss": 0.00102,
  "epssPercentile": 0.00926,
  "priority": "High",
  "priorityTier": 3,
  "exploited": false,
  "vendorExploited": false,
  "disclosed": false,
  "fixes": [
    {
      "platform": "linux",
      "product": "intel-microcode",
      "release": "Debian 14",
      "fixedVersion": "3.20260925.1",
      "fix": "DEBIAN-CVE-2025-35973",
      "url": "https://patchblox.com/security/fix/linux/debian-cve-2025-35973",
      "released": "2026-08-11T17:17:43Z"
    },
    {
      "platform": "linux",
      "product": "microcode_ctl",
      "release": "RHEL 10",
      "fixedVersion": "20260812-0.el10_2",
      "fix": "RHSA-2026:67979",
      "url": "https://patchblox.com/security/fix/linux/rhsa-2026-67979",
      "released": "2026-08-11T16:28:25Z"
    },
    {
      "platform": "linux",
      "product": "microcode_ctl",
      "release": "RHEL 8",
      "fixedVersion": "4:20260812-1.el8_10",
      "fix": "RHSA-2026:65147",
      "url": "https://patchblox.com/security/fix/linux/rhsa-2026-65147",
      "released": "2026-09-13T12:46:35Z"
    },
    {
      "platform": "linux",
      "product": "microcode_ctl",
      "release": "RHEL 9",
      "fixedVersion": "4:20260210-1.20260812.1.el9_8",
      "fix": "RHSA-2026:68011",
      "url": "https://patchblox.com/security/fix/linux/rhsa-2026-68011",
      "released": "2026-09-19T18:32:55Z"
    },
    {
      "platform": "linux",
      "product": "microcode_ctl",
      "release": "almalinux 10",
      "fixedVersion": "4:20260812-0.el10_2",
      "fix": "ALSA-2026:67979",
      "url": "https://patchblox.com/security/fix/linux/alsa-2026-67979",
      "released": "2026-09-16T00:00:00Z"
    },
    {
      "platform": "linux",
      "product": "microcode_ctl",
      "release": "almalinux 8",
      "fixedVersion": "4:20260812-1.el8_10",
      "fix": "ALSA-2026:65147",
      "url": "https://patchblox.com/security/fix/linux/alsa-2026-65147",
      "released": "2026-09-08T00:00:00Z"
    },
    {
      "platform": "linux",
      "product": "microcode_ctl",
      "release": "almalinux 9",
      "fixedVersion": "4:20260210-1.20260812.1.el9_8",
      "fix": "ALSA-2026:68011",
      "url": "https://patchblox.com/security/fix/linux/alsa-2026-68011",
      "released": "2026-09-16T00:00:00Z"
    },
    {
      "platform": "linux",
      "product": "microcode_ctl",
      "release": "amzn 2023",
      "fixedVersion": "2:2.1-53.amzn2023.0.16",
      "fix": "ALAS2023-2026-2080",
      "url": "https://patchblox.com/security/fix/linux/alas2023-2026-2080",
      "released": "2026-08-31T09:00:00Z"
    },
    {
      "platform": "linux",
      "product": "microcode_ctl",
      "release": "ol 10",
      "fixedVersion": "4:20260812-1.0.2.el10_2",
      "fix": "ELSA-2026-67979",
      "url": "https://patchblox.com/security/fix/linux/elsa-2026-67979",
      "released": "2026-11-07T00:59:15Z"
    },
    {
      "platform": "linux",
      "product": "microcode_ctl",
      "release": "ol 8",
      "fixedVersion": "4:20260812-1.0.3.el8_10",
      "fix": "ELSA-2026-65147-0",
      "url": "https://patchblox.com/security/fix/linux/elsa-2026-65147-0",
      "released": "2026-09-16T00:00:00Z"
    },
    {
      "platform": "linux",
      "product": "microcode_ctl",
      "release": "ol 9",
      "fixedVersion": "4:20260812-1.0.2.el9_8",
      "fix": "ELSA-2026-68011",
      "url": "https://patchblox.com/security/fix/linux/elsa-2026-68011",
      "released": "2026-11-07T00:52:27Z"
    },
    {
      "platform": "linux",
      "product": "microcode_ctl",
      "release": "rocky 10",
      "fixedVersion": "4:20260812-0.el10_2",
      "fix": "RLSA-2026:67979",
      "url": "https://patchblox.com/security/fix/linux/rlsa-2026-67979",
      "released": "2026-09-17T12:10:28Z"
    },
    {
      "platform": "linux",
      "product": "microcode_ctl",
      "release": "rocky 8",
      "fixedVersion": "4:20260812-1.el8_10",
      "fix": "RLSA-2026:65147",
      "url": "https://patchblox.com/security/fix/linux/rlsa-2026-65147",
      "released": "2026-09-09T06:01:04Z"
    },
    {
      "platform": "linux",
      "product": "microcode_ctl",
      "release": "rocky 9",
      "fixedVersion": "4:20260210-1.20260812.1.el9_8",
      "fix": "RLSA-2026:68011",
      "url": "https://patchblox.com/security/fix/linux/rlsa-2026-68011",
      "released": "2026-09-17T06:07:16Z"
    },
    {
      "platform": "linux",
      "product": "ucode-intel",
      "release": "opensuse-leap 16.0",
      "fixedVersion": "20260812-160000.1.1",
      "fix": "OPENSUSE-SU-2026:21736-1",
      "url": "https://patchblox.com/security/fix/linux/opensuse-su-2026-21736-1",
      "released": "2026-09-02T09:34:17Z"
    },
    {
      "platform": "linux",
      "product": "ucode-intel",
      "release": "sles 15.6",
      "fixedVersion": "20260812-150200.68.1",
      "fix": "SUSE-SU-2026:4025-1",
      "url": "https://patchblox.com/security/fix/linux/suse-su-2026-4025-1",
      "released": "2026-09-07T07:43:47Z"
    },
    {
      "platform": "linux",
      "product": "ucode-intel",
      "release": "sles 15.7",
      "fixedVersion": "20260812-150200.68.1",
      "fix": "SUSE-SU-2026:4025-1",
      "url": "https://patchblox.com/security/fix/linux/suse-su-2026-4025-1",
      "released": "2026-09-07T07:43:47Z"
    },
    {
      "platform": "linux",
      "product": "ucode-intel",
      "release": "sles 16.0",
      "fixedVersion": "20260812-160000.1.1",
      "fix": "SUSE-SU-2026:23602-1",
      "url": "https://patchblox.com/security/fix/linux/suse-su-2026-23602-1",
      "released": "2026-09-21T08:31:07Z"
    }
  ],
  "noFixYet": [],
  "dataAsOf": "2026-11-08T06:59:42Z",
  "attribution": {
    "text": "Data: Patchblox Patch Radar",
    "url": "https://patchblox.com/security/patch-radar",
    "terms": "https://patchblox.com/security/patch-radar/use-the-data"
  }
}