CVE-2021-36323: dell alienware_13_r3_firmware Improper Input Validation
CVSS: 7.5v3.1HighModified
Published 12-11-2021Last modified 08-10-2026
Vulnerability summary
CVE-2021-36323 is a high (CVSS 7.5) Improper Input Validation vulnerability in dell alienware_13_r3_firmware. EPSS estimates a 0.24% chance of exploitation in the next 30 days, higher than 14.2% of scored vulnerabilities.
CVSS score
7.5/10
010
High · v3.1 (CVE.org)EPSS score
0.24%
0%100%
Low · 0.00 pp in 30 daysKEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded
Timeline
- 12-11-2021PublishedVulnerability first disclosed.
- 08-10-2026Last modifiedVulnerability information updated.
Description
Dell BIOS contains an improper input validation vulnerability. A local authenticated malicious user may potentially exploit this vulnerability by using an SMI to gain arbitrary code execution in SMRAM.
CVSS metrics
3 scores · 2 sources · 2 versionsHigh 7.5Preferred score · CVE.org (CNA)
CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:C/C:H/I:H/A:HSources2 sources · 6.7–7.5
- NVDNIST6.7MediumCVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:HDiffers
High 7.2Preferred score · NVD (NIST)
AV:L/AC:L/Au:N/C:C/I:C/A:CSourcesSingle source
EPSS trend
Probability
0.24%
Chance of exploitation in the next 30 days
Percentile
14%
Versus all other CVEs
30-day change
0.00 pp
From 0.24% on 20-09-2026
20-09-202620-10-2026
EPSS score0.24%
Known exploited
Compare KEV catalogsNot in any of the 3 tracked catalogs.
Public exploits
0 foundNo public exploits indexed.
Weaknesses
CWE · root causeAffected systems
Dell200 products
- alienware_13_r3_firmware< 1.13.0
- alienware_15_r3_firmware< 1.13.0
- alienware_15_r4_firmware< 1.14.0
- alienware_17_r4_firmware< 1.13.0
- alienware_17_r5_firmware< 1.14.0
1 vendor · 200 products · Showing 200 of 284. Use Open JSON for the complete list.