Risk Scores
CVSS v3.1
7.900000095367432
CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:N
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Red Hat | microcode_ctl |
Timeline
- Apr 7, 2026 CVE Published
- Apr 8, 2026 Distribution Patch
=========================================================================== AUSCERT External Security Bulletin Redistribution ESB-2026.3365 microcode_ctl security update 8 April 2026 =========================================================================== AUSCERT Security Bulletin Summary --------------------------------- Product: microcode_ctl Publisher: Red Hat Operating System: Red Hat Resolution: Patch/Upgrade CVE Names: CVE-2025-35998 Original Bulletin: https://access.redhat.com/errata/RHSA-2026:6888 Comment: CVSS (Max): 7.9 CVE-2025-35998 (CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:N) CVSS Source: Red Hat Calculator: https://www.first.org/cvss/calculator/3.1#CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:N EPSS (Max): 0.0% (0th) CVE-2025-35998 2026-04-07 - --------------------------BEGIN INCLUDED TEXT-------------------- RHSA-2026:6888 - Security Advisory Issued: 2026-04-07 Updated: 2026-04-07 Synopsis Microcode_ctl security update Type/Severity Security Advisory: Important Topic An update for microcode_ctl is now available for Red Hat Enterprise Linux 10.0 Extended Update Support. Red Hat Product Security has rated this update as having a security impact of Important. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available for each vulnerability from the CVE link(s) in the References section. Description The microcode_ctl packages provide microcode updates for Intel and AMD processors. Security Fix(es): o Intel (R): From CVEorg collector (CVE-2025-35998) For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section. Solution For details on how to apply this update, which includes the changes described in this advisory, refer to: https://access.redhat.com/articles/11258 Affected Products o Red Hat Enterprise Linux for x86_64 - Extended Update Support 10.0 x86_64 o Red Hat Enterprise Linux for x86_64 - 4 years of updates 10.0 x86_64 Fixes o BZ - 2438523 - CVE-2025-35998 Intel (R): From CVEorg collector o RHEL-162251 - [10.0z]: Update microcode_ctl to 20260227 CVEs o CVE-2025-35998 References o https://access.redhat.com/security/updates/classification/#important - --------------------------END INCLUDED TEXT---------------------- You have received this e-mail bulletin as a result of your organisation's registration with AUSCERT. The mailing list you are subscribed to is maintained within your organisation, so if you do not wish to continue receiving these bulletins you should contact your local IT manager. If you do not know who that is, please send an email to auscert@auscert.org.au and we will forward your request to the appropriate person. NOTE: Third Party Rights This security bulletin is provided as a service to AUSCERT's members. As AUSCERT did not write the document quoted above, AUSCERT has had no control over its content. The decision to follow or act on information or advice contained in this security bulletin is the responsibility of each user or organisation, and should be considered in accordance with your organisation's site policies and procedures. AUSCERT takes no responsibility for consequences which may arise from following or acting on information or advice contained in this security bulletin. NOTE: This is only the original release of the security bulletin. It may not be updated when updates to the original are made. If downloading at a later date, it is recommended that the bulletin is retrieved directly from the author's website to ensure that the information is still current. Contact information for the authors of the original document is included in the Security Bulletin above. If you have any questions or need further information, please contact them directly. Previous advisories and external security bulletins can be retrieved from: https://portal.auscert.org.au/bulletins/ =========================================================================== AUSCERT The University of Queensland, Brisbane QLD 4072 Australia e: auscert@auscert.org.au t: +61 (0)7 3365 4417 Allies in Cyber Security ===========================================================================
| Vendor | Product | Versions |
|---|---|---|
| Red Hat | microcode_ctl |