Vulnerability · Published Aug 11, 2026 · Assigned by intel
CVE-2026-20917
Medium 4.0
In plain English
A medium-severity security flaw in Intel(R) Processors. 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.
Official description
Exposure of sensitive information caused by incorrect data forwarding during transient execution for some Intel(R) Processors within Ring 0: Hypervisor and Kernel may allow information disclosure. System software adversary with a privileged user combined with a high complexity attack may enable data exposure. 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 (none) and availability (none) impacts.
Affected packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| Alpine:v3.21 | intel-ucode | 20260812-r0 | ALPINE-CVE-2026-20917 |
| Alpine:v3.22 | intel-ucode | 20260812-r0 | ALPINE-CVE-2026-20917 |
| Alpine:v3.23 | intel-ucode | 20260812-r0 | ALPINE-CVE-2026-20917 |
| Alpine:v3.24 | intel-ucode | 20260812-r0 | ALPINE-CVE-2026-20917 |
| Debian:12 | intel-microcode | no fix listed | DEBIAN-CVE-2026-20917 |
| Debian:13 | intel-microcode | no fix listed | DEBIAN-CVE-2026-20917 |
| Debian:14 | intel-microcode | 3.20260925.1 | DEBIAN-CVE-2026-20917 |
| Ubuntu:22.04:LTS | intel-microcode | no fix listed | UBUNTU-CVE-2026-20917 |
| Ubuntu:24.04:LTS | intel-microcode | no fix listed | UBUNTU-CVE-2026-20917 |
| Ubuntu:26.04:LTS | intel-microcode | no fix listed | UBUNTU-CVE-2026-20917 |
| Ubuntu:26.10 | intel-microcode | no fix listed | UBUNTU-CVE-2026-20917 |
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| n/a | Intel(R) Processors | See references |
Weakness: CWE-1422 · Vector: CVSS:4.0/AV:L/AC:H/AT:N/PR:H/UI:N/VC:N/VI:N/VA:N/SC:H/SI:N/SA:N