CVE-2026-20709
microcode_ctl: Intel Processors: Escalation of privilege due to default cryptographic key
Severity
ModerateRed Hat Product Security
CVSS 3.1
Review impact separately from score.
Published · April 9, 2026
Updated · June 30, 2026
Description
A flaw was found in some Intel Pentium Processor Silver Series, Intel Celeron Processor J Series, and Intel Celeron Processor N Series. This vulnerability arises from the use of a default cryptographic key in the hardware. A sophisticated attacker with physical access and privileged user access could exploit this to achieve an escalation of privilege, potentially compromising the system's confidentiality and integrity.
CVSS score applicability
The CVSS score(s) listed for this vulnerability do not reflect the associated product's status, and are included for informational purposes to better understand the severity of this vulnerability.
Mitigation
No mitigation is specified in collected source.
CVSS / CWE
CVSS 3.1 · 6.6CVSS:3.1/AV:P/AC:H/PR:H/UI:N/S:C/C:H/I:H/A:N
CWE-1392 · Use of Default Credentials