CVE catalog

CVE-2026-20760

Improper handling of overlap between protected memory…

[CVE catalog]

Improper handling of overlap between protected memory ranges in some microcode for some Intel(R) Processors within Ring 0: Hypervisor may allow an escalation of privilege. Authorized adversary with a privileged user combined with a low complexity attack may enable escalation of privilege. This result may potentially occur via local access when attack requirements are not present without special internal knowledge and requires no user interaction. The potential vulnerability may impact the confidentiality (high), integrity (high) and availability (high) of the vulnerable system, resulting in subsequent system confidentiality (none), integrity (none) and availability (none) impacts.

Severity
Medium · CVSS 6.8
Published
Source
[NVD] · [CVE record]
EPSS
0.10% · Oct 27, 2026

Projects and upstream resources

Reported versions and fixes

Each observation applies to its named package, distribution, and release. Distribution backports can fix a vulnerability while retaining an older upstream version number.

Version impact has not been established. The original provider fields are retained below.

Provider details and historical evidence
Original provider fields
{
  "package_releases": [
    {
      "name": "intel-microcode",
      "status": "vulnerable",
      "release": "sid",
      "version": "3.20260227.1"
    },
    {
      "name": "intel-microcode",
      "status": "vulnerable",
      "release": "forky",
      "version": "3.20260227.1"
    },
    {
      "name": "intel-microcode",
      "status": "vulnerable",
      "release": "trixie",
      "version": "3.20251111.1~deb13u1"
    },
    {
      "name": "intel-microcode",
      "status": "vulnerable",
      "release": "trixie-security",
      "version": "3.20250812.1~deb13u1"
    },
    {
      "name": "intel-microcode",
      "status": "vulnerable",
      "release": "bookworm",
      "version": "3.20251111.1~deb12u1"
    },
    {
      "name": "intel-microcode",
      "status": "vulnerable",
      "release": "bookworm-security",
      "version": "3.20250812.1~deb12u1"
    }
  ],
  "fixed_versions": [
    {
      "bug": 1144158,
      "name": "intel-microcode",
      "type": "source",
      "origin": null,
      "release": "sid",
      "urgency": "not yet assigned",
      "fixed_version": ""
    },
    {
      "bug": 1144158,
      "name": "intel-microcode",
      "type": "source",
      "origin": null,
      "release": "forky",
      "urgency": "not yet assigned",
      "fixed_version": ""
    },
    {
      "bug": 1144158,
      "name": "intel-microcode",
      "type": "source",
      "origin": null,
      "release": "trixie",
      "urgency": "not yet assigned",
      "fixed_version": ""
    },
    {
      "bug": 1144158,
      "name": "intel-microcode",
      "type": "source",
      "origin": null,
      "release": "bookworm",
      "urgency": "not yet assigned",
      "fixed_version": ""
    }
  ],
  "distribution_packages": [
    {
      "name": "intel-ucode",
      "distro": "alpine",
      "ranges": [
        {
          "type": "ECOSYSTEM",
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "20260812-r0"
            }
          ]
        }
      ],
      "release": "3.21",
      "versions": [],
      "ecosystem": "apk",
      "fixed_version": "20260812-r0",
      "provider_record_id": "ALPINE-CVE-2026-20760"
    },
    {
      "name": "intel-ucode",
      "distro": "alpine",
      "ranges": [
        {
          "type": "ECOSYSTEM",
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "20260812-r0"
            }
          ]
        }
      ],
      "release": "3.22",
      "versions": [],
      "ecosystem": "apk",
      "fixed_version": "20260812-r0",
      "provider_record_id": "ALPINE-CVE-2026-20760"
    },
    {
      "name": "intel-ucode",
      "distro": "alpine",
      "ranges": [
        {
          "type": "ECOSYSTEM",
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "20260812-r0"
            }
          ]
        }
      ],
      "release": "3.23",
      "versions": [],
      "ecosystem": "apk",
      "fixed_version": "20260812-r0",
      "provider_record_id": "ALPINE-CVE-2026-20760"
    },
    {
      "name": "intel-ucode",
      "distro": "alpine",
      "ranges": [
        {
          "type": "ECOSYSTEM",
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "20260812-r0"
            }
          ]
        }
      ],
      "release": "3.24",
      "versions": [],
      "ecosystem": "apk",
      "fixed_version": "20260812-r0",
      "provider_record_id": "ALPINE-CVE-2026-20760"
    }
  ]
}

[Debian bug #1144158]

Publisher notes

[trixie] intel-microcode: As usual fixed top-down, expose first in unstable, then likely point release [bookworm] intel-microcode: As usual fixed top-down, expose first in unstable, then likely point release

OpenFactory catalog packages

Matching against OpenFactory catalog package versions is in progress.

[Debian 12 (Bookworm)]

  • [intel-microcode]Unknown
    Details (1)

    • 3.20251111.1~deb12u1 · amd64 · bookworm

      Affected

      nvd · intel-microcode · debian · bookworm; nvd · intel-microcode · debian · 12

[Debian 13 (Trixie)]

  • [intel-microcode]Unknown
    Details (1)

    • 3.20251111.1~deb13u1 · amd64 · trixie

      Affected

      nvd · intel-microcode · debian · 13

Observed:

References

[CERT-Bund public advisories] · [Debian Security Tracker] · [FIRST EPSS] · [National Vulnerability Database (NVD)] · [OSV Package Vulnerability Database] · [SUSE security advisories and VEX]