What’s Vulnerable › Vulnerabilities

CVE-2021-0086

• Severity: medium (CVSS 6.5 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.3% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2021-06-09 · updated 2026-06-17
• Weakness: CWE-203

Description

Observable response discrepancy in floating-point operations for some Intel(R) Processors may allow an authorized user to potentially enable information disclosure via local access.

Affected products

• Fedoraproject Fedora: 33, 34
• Intel(R) Brand Verification Tool: before 11.0.0.1225 — fixed in 11.0.0.1225
• Intel Celeron Processors Firmware: all versions
• Intel Core Processors Firmware: all versions
• Intel Itanium Processors Firmware: all versions
• Intel Pentium Processors Firmware: all versions
• Intel Xeon Processors Firmware: all versions

How to fix

Upgrade to a fixed version: Intel(R) Brand Verification Tool 11.0.0.1225. Check the vendor advisory for mitigations.

References

• http://www.openwall.com/lists/oss-security/2021/06/08/7
• http://www.openwall.com/lists/oss-security/2021/06/09/2
• http://www.openwall.com/lists/oss-security/2021/06/10/1
• https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/H36U6CNREC436W6GYO7QUMJIVEA35SCV/
• https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/SVA2NY26MMXOODUMYZN5DCU3FXMBMBOB/
• https://www.intel.com/content/www/us/en/security-center/advisory/intel-sa-00516.html
• https://www.intel.com/content/www/us/en/security-center/advisory/intel-sa-00546.html
• https://www.intel.com/content/www/us/en/security-center/advisory/intel-sa-00546.html
• https://www.intel.com/content/www/us/en/security-center/advisory/intel-sa-00546.html
• https://www.intel.com/content/www/us/en/security-center/advisory/intel-sa-00546.html
• http://www.openwall.com/lists/oss-security/2021/06/08/7
• http://www.openwall.com/lists/oss-security/2021/06/09/2

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