CVE-2021-0158: intel celeron_n2805_firmware Improper Input Validation
CVSS: 6.7v3.1MediumModified
Published 17-11-2021Last modified 07-10-2026
Vulnerability summary
CVE-2021-0158 is a medium (CVSS 6.7) Improper Input Validation vulnerability in intel celeron_n2805_firmware. EPSS estimates a 3.02% chance of exploitation in the next 30 days, higher than 87.2% of scored vulnerabilities.
CVSS score
6.7/10
010
Medium · v3.1 (CVE.org)EPSS score
3.02%
0%100%
Low · 0.00 pp in 30 daysKEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded
Timeline
- 17-11-2021PublishedVulnerability first disclosed.
- 07-10-2026Last modifiedVulnerability information updated.
Description
Improper input validation in the BIOS firmware for some Intel(R) Processors may allow a privileged user to potentially enable escalation of privilege via local access.
CVSS metrics
3 scores · 2 sources · 2 versionsMedium 6.7Preferred score · CVE.org (CNA)
CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:HSourcesAll 2 agree
- NVDNIST6.7MediumCVSS:3.1/AV:L/AC:L/PR:H/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
3.02%
Chance of exploitation in the next 30 days
Percentile
87%
Versus all other CVEs
30-day change
0.00 pp
From 3.02% on 19-09-2026
19-09-202619-10-2026
EPSS score3.02%
Known exploited
Compare KEV catalogsNot in any of the 3 tracked catalogs.
Public exploits
0 foundNo public exploits indexed.
Weaknesses
CWE · root causeAffected systems
1 vendor · 200 products · Showing 200 of 484. Use Open JSON for the complete list.
References
1 links- www.intel.com/content/www/us/en/security-center/advisory/intel-sa-00562.htmlX Refsource MISCVendor Advisory