CVE-2020-8670: intel bios Race Condition
CVSS: 6.4v3.1MediumModified
Published 09-06-2021Last modified 08-10-2026
Vulnerability summary
CVE-2020-8670 is a medium (CVSS 6.4) Race Condition vulnerability in intel bios. EPSS estimates a 0.27% chance of exploitation in the next 30 days, higher than 17.7% of scored vulnerabilities.
CVSS score
6.4/10
010
Medium · v3.1 (NVD)EPSS score
0.27%
0%100%
Low · 0.00 pp in 30 daysKEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded
Timeline
- 09-06-2021PublishedVulnerability first disclosed.
- 08-10-2026Last modifiedVulnerability information updated.
Description
Race condition in the firmware for some Intel(R) Processors may allow a privileged user to potentially enable escalation of privilege via local access.
CVSS metrics
2 scores · 1 source · 2 versionsMedium 6.4Preferred score · NVD (NIST)
CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:U/C:H/I:H/A:HSourcesSingle source
Medium 4.4Preferred score · NVD (NIST)
AV:L/AC:M/Au:N/C:P/I:P/A:PSourcesSingle source
EPSS trend
Probability
0.27%
Chance of exploitation in the next 30 days
Percentile
18%
Versus all other CVEs
30-day change
0.00 pp
From 0.27% on 19-09-2026
19-09-202619-10-2026
EPSS score0.27%
Known exploited
Compare KEV catalogsNot in any of the 3 tracked catalogs.
Public exploits
0 foundNo public exploits indexed.
Weaknesses
CWE · root causeAffected systems
Siemens4 products
- simatic_ipc627e_firmware< 25.02.10
- simatic_ipc647e_firmware< 25.02.10
- simatic_ipc677e_firmware< 25.02.10
- simatic_ipc847e_firmware< 25.02.10
Intel1 product
- biosna
3 vendors · 11 products
References
3 links- www.intel.com/content/www/us/en/security-center/advisory/intel-sa-00463.htmlX Refsource MISCVendor Advisory