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Vulnerability · Published Aug 11, 2026 · Assigned by intel

CVE-2026-20713

Medium 4.5

In plain English

A medium-severity security flaw in Intel(R) Xeon(R) processors may allow an escalation of privilege. System software adversary with a privileged user combined with a high complexity attack may enable escalation of privilege. This resul. 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 1% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.

Severity (CVSS 4.0)4.5Medium
Exploit odds (30 days)0.1%top 99.0% of all CVEs
Exploited in the wildNo reportsCISA SSVC: none
Attack toolingNoneno public tooling known

Official description

Always-incorrect control flow implementation in some firmware for some Intel(R) Xeon(R) processors may allow an escalation of privilege. System software 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 not present without special internal knowledge and requires no user interaction. The potential vulnerability may impact the confidentiality (none), integrity (none) and availability (none) of the vulnerable system, resulting in subsequent system confidentiality (high), integrity (high) and availability (none) impacts.

Affected packages & fixed versions

EcosystemPackageFixed inAdvisory
Alpine:v3.21intel-ucode20260812-r0ALPINE-CVE-2026-20713
Alpine:v3.22intel-ucode20260812-r0ALPINE-CVE-2026-20713
Alpine:v3.23intel-ucode20260812-r0ALPINE-CVE-2026-20713
Alpine:v3.24intel-ucode20260812-r0ALPINE-CVE-2026-20713
Debian:12intel-microcodeno fix listedDEBIAN-CVE-2026-20713
Debian:13intel-microcodeno fix listedDEBIAN-CVE-2026-20713
Debian:14intel-microcode3.20260925.1DEBIAN-CVE-2026-20713
Ubuntu:22.04:LTSintel-microcodeno fix listedUBUNTU-CVE-2026-20713
Ubuntu:24.04:LTSintel-microcodeno fix listedUBUNTU-CVE-2026-20713
Ubuntu:26.04:LTSintel-microcodeno fix listedUBUNTU-CVE-2026-20713
Ubuntu:26.10intel-microcodeno fix listedUBUNTU-CVE-2026-20713

Affected products (as reported)

VendorProductVersions
n/a Intel(R) Xeon(R) processors may allow an escalation of privilege. System software 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 not present without special internal knowledge and requires no user interaction. The potential vulnerability may impact the confidentiality (none), integrity (none) and availability (none) of the vulnerable system, resulting in subsequent system confidentiality (high), integrity (high) and availability (none) impacts. See references

Weakness: CWE-670 · Vector: CVSS:4.0/AV:L/AC:H/AT:N/PR:H/UI:N/VC:N/VI:N/VA:N/SC:H/SI:H/SA:N

References