CVE-2020-12359: intel bios Insufficient Control Flow Management
CVSS: 6.8v3.1MediumModified
Published 09-06-2021Last modified 07-10-2026
Vulnerability summary
CVE-2020-12359 is a medium (CVSS 6.8) Insufficient Control Flow Management vulnerability in intel bios. EPSS estimates a 0.32% chance of exploitation in the next 30 days, higher than 23.1% of scored vulnerabilities.
CVSS score
6.8/10
010
Medium · v3.1 (CVE.org)EPSS score
0.32%
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.
- 07-10-2026Last modifiedVulnerability information updated.
Description
Insufficient control flow management in the firmware for some Intel(R) Processors may allow an unauthenticated user to potentially enable escalation of privilege via physical access.
CVSS metrics
3 scores · 2 sources · 2 versionsMedium 6.8Preferred score · CVE.org (CNA)
CVSS:3.1/AV:P/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:HSourcesAll 2 agree
- NVDNIST6.8MediumCVSS:3.1/AV:P/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Medium 4.6Preferred score · NVD (NIST)
AV:L/AC:L/Au:N/C:P/I:P/A:PSourcesSingle source
EPSS trend
Probability
0.32%
Chance of exploitation in the next 30 days
Percentile
23%
Versus all other CVEs
30-day change
0.00 pp
From 0.32% on 18-09-2026
18-09-202618-10-2026
EPSS score0.32%
Known exploited
Compare KEV catalogsNot in any of the 3 tracked catalogs.
Public exploits
0 foundNo public exploits indexed.
Weaknesses
CWE · root causeAffected systems
Intel1 product
- biosna
2 vendors · 8 products
References
2 links- www.intel.com/content/www/us/en/security-center/advisory/intel-sa-00463.htmlX Refsource MISCVendor Advisory