Reference page — cumulative record through Thursday, October 8, 2026 UTC. Reference pages update as the archive grows; only dated daily editions are immutable pages of record.

CVE-2021-36343

CVE-2021-36343MEDIUM

Dell BIOS contains an improper input validation vulnerability.

  AV  AC  PR  UI  S  C  I  A   CVSS    EPSS   %ile   KEV
   L   H   H   N  U  H  H  H    6.4   .0024   14.0     —

AFFECTED
  Product   Versions       Fixed
  CPG BIOS  unspecified –  —

TIMELINE
  Jul 8   Reserved by dell
  Jan 24  Published (CNA: dell)
  Oct 7   RESCORED — CVE-2021-36343 (Dell CPG BIOS). CVSS 7.5 → 6.4 (NVD).

CWE-20, CWE-119 · CNA: dell · CVSS v3.1 · 1 reference · NVD status: Analyzed

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.

Lifecycle

Complete event history — 3 events, chronological
Date	Event	Detail
July 8, 2021	Reserved	Reserved by dell
January 24, 2022	Published	Published (CNA: dell)
October 7, 2026	RESCORED	RESCORED — CVE-2021-36343 (Dell CPG BIOS). CVSS 7.5 → 6.4 (NVD).

Affected

Affected products and packages — 1 row
Vendor	Product / Package	Ecosystem	Version introduced	Fixed
Dell	CPG BIOS	—	unspecified	—

Weaknesses

CWE-20 · CWE-119

References (1)

https://www.dell.com/support/kbdoc/en-us/000193321/dsa-2021-240 [Vendor Advisory]

Authoritative record: CVE-2021-36343 at cve.org

Vendors: dell

Weaknesses: CWE-20 · CWE-119

About this page

This is a reference page, not a dated page of record. It assembles the complete lifecycle of CVE-2021-36343 from the CVE Program record, NVD enrichment, the CISA KEV catalog, EPSS, and OSV advisories. The box score's numbers (CVSS, EPSS, KEV status) are current as of Thursday, October 8, 2026 UTC and are re-derived as the archive grows; only dated daily editions are immutable pages of record. The authoritative source for this identifier is cve.org.