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Vulnerability · Published Feb 10, 2026 · Assigned by intel

CVE-2025-31648

Low 3.9

In plain English

A low-severity security flaw in Intel(R) Processor Family may allow an escalation of privilege. Startup code and smm adversary with a privileged user combined with a high complexity attack may enable escalation of privilege. This re. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.1% (higher than 4% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.

Severity (CVSS 3.1)3.9Low
Exploit odds (30 days)0.1%top 95.9% of all CVEs
Exploited in the wildNo reportsCISA SSVC: none
Attack toolingNoneno public tooling known

Official description

Improper handling of values in the microcode flow for some Intel(R) Processor Family may allow an escalation of privilege. Startup code and smm adversary with a privileged user combined with a high complexity attack may enable escalation of privilege. This result may potentially occur via local access when attack requirements are present with special internal knowledge and requires no user interaction. The potential vulnerability may impact the confidentiality (low), integrity (low) and availability (none) of the vulnerable system, resulting in subsequent system confidentiality (low), integrity (low) and availability (none) impacts.

Affected packages & fixed versions

EcosystemPackageFixed inAdvisory
Alpine:v3.20intel-ucode20260210-r0ALPINE-CVE-2025-31648
Alpine:v3.21intel-ucode20260210-r0ALPINE-CVE-2025-31648
Alpine:v3.22intel-ucode20260210-r0ALPINE-CVE-2025-31648
Alpine:v3.23intel-ucode20260210-r0ALPINE-CVE-2025-31648
Alpine:v3.24intel-ucode20260210-r0ALPINE-CVE-2025-31648
Debian:12intel-microcodeno fix listedDEBIAN-CVE-2025-31648
Debian:13intel-microcodeno fix listedDEBIAN-CVE-2025-31648
Debian:14intel-microcode3.20260210.1DEBIAN-CVE-2025-31648
Ubuntu:22.04:LTSintel-microcode3.20260210.0ubuntu0.22.04.1UBUNTU-CVE-2025-31648
Ubuntu:24.04:LTSintel-microcode3.20260210.0ubuntu0.24.04.1UBUNTU-CVE-2025-31648
Ubuntu:25.10intel-microcode3.20260210.0ubuntu0.25.10.1UBUNTU-CVE-2025-31648

Affected products (as reported)

VendorProductVersions
n/a Intel(R) Processor Family may allow an escalation of privilege. Startup code and smm adversary with a privileged user combined with a high complexity attack may enable escalation of privilege. This result may potentially occur via local access when attack requirements are present with special internal knowledge and requires no user interaction. The potential vulnerability may impact the confidentiality (low), integrity (low) and availability (none) of the vulnerable system, resulting in subsequent system confidentiality (low), integrity (low) and availability (none) impacts. See references

Weakness: CWE-229 · Vector: CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:C/C:L/I:L/A:N

References