CVE-2021-36324

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.

Published: 2021-11-12 Last update: 2026-06-16 Assigner: [email protected] Source: [email protected]
NVD Status：Modified，CVE State: published
View at NVD, CVE.org, EUVD

CVE-2021-36324 is rated Low Risk (35.1/100): CVSS High severity, with low exploitation likelihood (EPSS 0.23%). Monitor for updates and reassess as exploit intelligence or EPSS changes.

Risk is dynamic; we continuously reassess and refresh what is shown on this page as upstream context changes.

Exploit prediction scoring system (EPSS) score for CVE-2021-36324

EPSS lead: Daily EPSS estimates relative likelihood of exploitation; percentile ranks this CVE among scored vulnerabilities (higher = more severe relative rank).

# Date Old EPSS score New EPSS score Delta (New - Old)
1 2026-06-15 0.04% 0.23% +0.19%
2 2025-03-30 0.08% 0.04% -0.04%
3 2025-03-29 — 0.08% —

Full EPSS history (8 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2021-36324

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
7.5 3.1 HIGH
CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:C/C:H/I:H/A:H Click to expand
Attack vector (AV:L)
They already need access on the box, or another person has to do something wrong; it’s not a remote drive-by.
Attack complexity (AC:H)
Even with access, the exploit needs extra luck, timing, or a fussy environment to actually work.
Privileges required (PR:H)
They need powerful rights—admin, root, or similar—before this pays off.
User interaction (UI:N)
Nobody has to click “OK” or open a trap file; it can work without a victim helping.
Scope (S:C)
Breaking this can reach past the original component and bite other resources—bigger blast radius.
Confidentiality (C:H)
Serious risk that confidential data gets exposed in a big way.
Integrity (I:H)
They could widely tamper with or forge data—trust in the data is badly hurt.
Availability (A:H)
Could take the service down hard or make it unusable for people who depend on it.
 0.8 6.0 [email protected]
6.7 3.1 MEDIUM
CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H Click to expand
Attack vector (AV:L)
They already need access on the box, or another person has to do something wrong; it’s not a remote drive-by.
Attack complexity (AC:L)
Once they can reach the bug, pulling it off is straightforward—no weird race conditions or rare setup.
Privileges required (PR:H)
They need powerful rights—admin, root, or similar—before this pays off.
User interaction (UI:N)
Nobody has to click “OK” or open a trap file; it can work without a victim helping.
Scope (S:U)
Damage stays in the same “trust bubble” as the broken component—no big spill into unrelated systems.
Confidentiality (C:H)
Serious risk that confidential data gets exposed in a big way.
Integrity (I:H)
They could widely tamper with or forge data—trust in the data is badly hurt.
Availability (A:H)
Could take the service down hard or make it unusable for people who depend on it.
 0.8 5.9 [email protected]
7.2 2.0 HIGH
AV:L/AC:L/Au:N/C:C/I:C/A:C Click to expand
Access vector (AV:L)
Requires local access to the target system.
Access complexity (AC:L)
Exploitation conditions are straightforward and predictable.
Authentication (AU:N)
No authentication is required.
Confidentiality impact (C:C)
Complete confidentiality impact.
Integrity impact (I:C)
Complete integrity impact.
Availability impact (A:C)
Complete availability impact.
 3.9 10.0 [email protected]

Weakness enumeration for CVE-2021-36324

Affected software / configurations for CVE-2021-36324

Vendor Product Version Raw CPE
dell alienware_13_r3_firmware < 1.13.0 cpe:2.3:o:dell:alienware_13_r3_firmware:*:*:*:*:*:*:*:*
dell alienware_15_r3_firmware < 1.13.0 cpe:2.3:o:dell:alienware_15_r3_firmware:*:*:*:*:*:*:*:*
dell alienware_15_r4_firmware < 1.14.0 cpe:2.3:o:dell:alienware_15_r4_firmware:*:*:*:*:*:*:*:*
dell alienware_17_r4_firmware < 1.13.0 cpe:2.3:o:dell:alienware_17_r4_firmware:*:*:*:*:*:*:*:*
dell alienware_17_r5_firmware < 1.14.0 cpe:2.3:o:dell:alienware_17_r5_firmware:*:*:*:*:*:*:*:*
dell alienware_area_51m_r1_firmware < 1.15.1 cpe:2.3:o:dell:alienware_area_51m_r1_firmware:*:*:*:*:*:*:*:*
dell alienware_area_51m_r2_firmware < 1.10.0 cpe:2.3:o:dell:alienware_area_51m_r2_firmware:*:*:*:*:*:*:*:*
dell alienware_aurora_r11_firmware < 1.0.9 cpe:2.3:o:dell:alienware_aurora_r11_firmware:*:*:*:*:*:*:*:*
dell alienware_aurora_r12_firmware < 1.1.7 cpe:2.3:o:dell:alienware_aurora_r12_firmware:*:*:*:*:*:*:*:*
dell alienware_aurora_r7_firmware < 1.0.25 cpe:2.3:o:dell:alienware_aurora_r7_firmware:*:*:*:*:*:*:*:*
dell alienware_aurora_r8_firmware < 1.0.17 cpe:2.3:o:dell:alienware_aurora_r8_firmware:*:*:*:*:*:*:*:*
dell alienware_aurora_r9_firmware < 1.0.14 cpe:2.3:o:dell:alienware_aurora_r9_firmware:*:*:*:*:*:*:*:*
dell alienware_aurora_ryzen_edition_firmware < 2.2.4 cpe:2.3:o:dell:alienware_aurora_ryzen_edition_firmware:*:*:*:*:*:*:*:*
dell alienware_m15_r1_firmware < 2.9.0 cpe:2.3:o:dell:alienware_m15_r1_firmware:*:*:*:*:*:*:*:*
dell alienware_m15_r2_firmware < 1.9.0 cpe:2.3:o:dell:alienware_m15_r2_firmware:*:*:*:*:*:*:*:*
dell alienware_m15_r3_firmware < 1.11.0 cpe:2.3:o:dell:alienware_m15_r3_firmware:*:*:*:*:*:*:*:*
dell alienware_m17_r1_firmware < 2.9.0 cpe:2.3:o:dell:alienware_m17_r1_firmware:*:*:*:*:*:*:*:*
dell alienware_m17_r2_firmware < 1.9.0 cpe:2.3:o:dell:alienware_m17_r2_firmware:*:*:*:*:*:*:*:*
dell alienware_m17_r3_firmware < 1.11.0 cpe:2.3:o:dell:alienware_m17_r3_firmware:*:*:*:*:*:*:*:*
dell alienware_x15_r1_firmware < 1.4.0 cpe:2.3:o:dell:alienware_x15_r1_firmware:*:*:*:*:*:*:*:*
dell alienware_x17_r1_firmware < 1.4.0 cpe:2.3:o:dell:alienware_x17_r1_firmware:*:*:*:*:*:*:*:*
dell chengming_3977_firmware < 1.13.0 cpe:2.3:o:dell:chengming_3977_firmware:*:*:*:*:*:*:*:*
dell chengming_3980_firmware < 2.19.0 cpe:2.3:o:dell:chengming_3980_firmware:*:*:*:*:*:*:*:*
dell chengming_3988_firmware < 1.7.0 cpe:2.3:o:dell:chengming_3988_firmware:*:*:*:*:*:*:*:*
dell chengming_3990_firmware < 1.5.1 cpe:2.3:o:dell:chengming_3990_firmware:*:*:*:*:*:*:*:*
dell chengming_3991_firmware < 1.5.1 cpe:2.3:o:dell:chengming_3991_firmware:*:*:*:*:*:*:*:*
dell g3_3579_firmware < 1.17.0 cpe:2.3:o:dell:g3_3579_firmware:*:*:*:*:*:*:*:*
dell g3_3590_firmware < 1.14.0 cpe:2.3:o:dell:g3_3590_firmware:*:*:*:*:*:*:*:*
dell g3_3779_firmware < 1.17.0 cpe:2.3:o:dell:g3_3779_firmware:*:*:*:*:*:*:*:*
dell g5_5000_firmware < 1.3.0 cpe:2.3:o:dell:g5_5000_firmware:*:*:*:*:*:*:*:*
dell g5_5090_firmware < 1.9.0 cpe:2.3:o:dell:g5_5090_firmware:*:*:*:*:*:*:*:*
dell g5_5587_firmware < 1.17.0 cpe:2.3:o:dell:g5_5587_firmware:*:*:*:*:*:*:*:*
dell g5_5590_firmware < 1.16.0 cpe:2.3:o:dell:g5_5590_firmware:*:*:*:*:*:*:*:*
dell g7_7587_firmware < 1.17.0 cpe:2.3:o:dell:g7_7587_firmware:*:*:*:*:*:*:*:*
dell g7_7588_firmware <= 1.17.0 cpe:2.3:o:dell:g7_7588_firmware:*:*:*:*:*:*:*:*
dell g7_7590_firmware <= 1.16.0 cpe:2.3:o:dell:g7_7590_firmware:*:*:*:*:*:*:*:*
dell g7_7790_firmware <= 1.16.0 cpe:2.3:o:dell:g7_7790_firmware:*:*:*:*:*:*:*:*
dell embedded_box_pc_5000_firmware < 1.11.0 cpe:2.3:o:dell:embedded_box_pc_5000_firmware:*:*:*:*:*:*:*:*
dell inspiron_13_5378_firmware < 1.34.0 cpe:2.3:o:dell:inspiron_13_5378_firmware:*:*:*:*:*:*:*:*
dell inspiron_13_5379_firmware < 1.17.0 cpe:2.3:o:dell:inspiron_13_5379_firmware:*:*:*:*:*:*:*:*
dell inspiron_14_3467_firmware < 2.16.0 cpe:2.3:o:dell:inspiron_14_3467_firmware:*:*:*:*:*:*:*:*
dell inspiron_14_5468_firmware < 1.15.0 cpe:2.3:o:dell:inspiron_14_5468_firmware:*:*:*:*:*:*:*:*
dell inspiron_15_3567_firmware < 2.16.0 cpe:2.3:o:dell:inspiron_15_3567_firmware:*:*:*:*:*:*:*:*
dell inspiron_15_5566_firmware < 1.15.0 cpe:2.3:o:dell:inspiron_15_5566_firmware:*:*:*:*:*:*:*:*
dell inspiron_15_5578_firmware < 1.34.0 cpe:2.3:o:dell:inspiron_15_5578_firmware:*:*:*:*:*:*:*:*
dell inspiron_15_5579_firmware < 1.17.0 cpe:2.3:o:dell:inspiron_15_5579_firmware:*:*:*:*:*:*:*:*
dell inspiron_15_5582_firmware < 2.11.0 cpe:2.3:o:dell:inspiron_15_5582_firmware:*:*:*:*:*:*:*:*
dell inspiron_15_7570_firmware < 1.20.0 cpe:2.3:o:dell:inspiron_15_7570_firmware:*:*:*:*:*:*:*:*
dell inspiron_15_7572_firmware < 1.8.0 cpe:2.3:o:dell:inspiron_15_7572_firmware:*:*:*:*:*:*:*:*
dell inspiron_15_7573_firmware < 1.20.0 cpe:2.3:o:dell:inspiron_15_7573_firmware:*:*:*:*:*:*:*:*
dell inspiron_15_7577_firmware < 1.14.0 cpe:2.3:o:dell:inspiron_15_7577_firmware:*:*:*:*:*:*:*:*
dell inspiron_17_7773_firmware < 1.17.0 cpe:2.3:o:dell:inspiron_17_7773_firmware:*:*:*:*:*:*:*:*
dell inspiron_3268_firmware < 1.17.1 cpe:2.3:o:dell:inspiron_3268_firmware:*:*:*:*:*:*:*:*
dell inspiron_3277_firmware < 1.16.0 cpe:2.3:o:dell:inspiron_3277_firmware:*:*:*:*:*:*:*:*
dell inspiron_3280_firmware < 1.12.0 cpe:2.3:o:dell:inspiron_3280_firmware:*:*:*:*:*:*:*:*
dell inspiron_3470_firmware < 2.19.0 cpe:2.3:o:dell:inspiron_3470_firmware:*:*:*:*:*:*:*:*
dell inspiron_3471_firmware < 1.7.0 cpe:2.3:o:dell:inspiron_3471_firmware:*:*:*:*:*:*:*:*
dell inspiron_3476_firmware < 1.14.0 cpe:2.3:o:dell:inspiron_3476_firmware:*:*:*:*:*:*:*:*
dell inspiron_3477_firmware < 1.16.0 cpe:2.3:o:dell:inspiron_3477_firmware:*:*:*:*:*:*:*:*
dell inspiron_3480_firmware < 1.15.0 cpe:2.3:o:dell:inspiron_3480_firmware:*:*:*:*:*:*:*:*
dell inspiron_3480_firmware < 1.12.0 cpe:2.3:o:dell:inspiron_3480_firmware:*:*:*:*:*:*:*:*
dell inspiron_3481_firmware < 1.14.0 cpe:2.3:o:dell:inspiron_3481_firmware:*:*:*:*:*:*:*:*
dell inspiron_3576_firmware < 1.14.0 cpe:2.3:o:dell:inspiron_3576_firmware:*:*:*:*:*:*:*:*
dell inspiron_3580_firmware < 1.15.0 cpe:2.3:o:dell:inspiron_3580_firmware:*:*:*:*:*:*:*:*
dell inspiron_3581_firmware < 1.14.0 cpe:2.3:o:dell:inspiron_3581_firmware:*:*:*:*:*:*:*:*
dell inspiron_3668_firmware < 1.17.1 cpe:2.3:o:dell:inspiron_3668_firmware:*:*:*:*:*:*:*:*
dell inspiron_3670_firmware < 2.19.0 cpe:2.3:o:dell:inspiron_3670_firmware:*:*:*:*:*:*:*:*
dell inspiron_3671_firmware < 1.7.0 cpe:2.3:o:dell:inspiron_3671_firmware:*:*:*:*:*:*:*:*
dell inspiron_3780_firmware < 1.15.0 cpe:2.3:o:dell:inspiron_3780_firmware:*:*:*:*:*:*:*:*
dell inspiron_3781_firmware < 1.14.0 cpe:2.3:o:dell:inspiron_3781_firmware:*:*:*:*:*:*:*:*
dell inspiron_3880_firmware < 1.5.1 cpe:2.3:o:dell:inspiron_3880_firmware:*:*:*:*:*:*:*:*
dell inspiron_3881_firmware < 1.5.1 cpe:2.3:o:dell:inspiron_3881_firmware:*:*:*:*:*:*:*:*
dell inspiron_5370_firmware < 1.19.0 cpe:2.3:o:dell:inspiron_5370_firmware:*:*:*:*:*:*:*:*
dell inspiron_5400_firmware < 1.5.2 cpe:2.3:o:dell:inspiron_5400_firmware:*:*:*:*:*:*:*:*
dell inspiron_5401_firmware < 1.5.2 cpe:2.3:o:dell:inspiron_5401_firmware:*:*:*:*:*:*:*:*
dell inspiron_5477_firmware < 1.2.15 cpe:2.3:o:dell:inspiron_5477_firmware:*:*:*:*:*:*:*:*
dell inspiron_5480_firmware < 2.11.0 cpe:2.3:o:dell:inspiron_5480_firmware:*:*:*:*:*:*:*:*
dell inspiron_5481_firmware < 2.11.0 cpe:2.3:o:dell:inspiron_5481_firmware:*:*:*:*:*:*:*:*
dell inspiron_5482_firmware < 2.11.0 cpe:2.3:o:dell:inspiron_5482_firmware:*:*:*:*:*:*:*:*
dell inspiron_5490_firmware < 1.10.0 cpe:2.3:o:dell:inspiron_5490_firmware:*:*:*:*:*:*:*:*

References for CVE-2021-36324

cvelogic Threat Intelligence