LiveActive security incident?Get immediate response
CVE Record

CVE-2022-26858: Dell BIOS versions contain an Improper Authentication vulnerability.

Dell BIOS versions contain an Improper Authentication vulnerability. A locally authenticated malicious user could potentially exploit this vulnerability by sending malicious input to an SMI in order to bypass security controls.

MediumCVSS 6.1Not KEV-listedUpdated
Discuss exposureBack to CVEs
Glexia's TakeAutomated analysismoderate

Security readout for executives and security teams

Plain-English summary

CVE-2022-26858 is a Dell BIOS improper authentication issue. A local, already-authenticated attacker could send malicious input to a System Management Interrupt and potentially bypass security controls. It is not described as remotely exploitable in the provided sources.

Executive priority

Treat this as a moderate firmware risk. It is not a remote-entry issue based on the sources, but BIOS control bypass can matter on sensitive Dell assets after compromise.

Technical view

The CVSS 3.1 vector is AV:L/AC:H/PR:H/UI:N/S:C/C:H/I:L/A:N. The issue is CWE-287 in Dell CPG BIOS, with affected versions unspecified in the bundle. Successful exploitation could impact confidentiality highly and integrity to a limited degree.

Likely exposure

Exposure is limited to Dell systems running affected CPG BIOS versions. The bundle does not list exact models or firmware versions, so asset inventory must be matched against Dell guidance.

Exploitation context

The bundle marks KEV as false and provides no cited evidence of active exploitation. Exploitation requires local access, high privileges, and high attack complexity, making it more relevant after initial compromise.

Researcher notes

Key gaps are affected model and version details. Use Dell’s advisory as the authoritative source for scope and remediation. Avoid assuming exploitability beyond local authenticated, high-privilege conditions.

Mitigation direction

  • Review Dell KB 000202194 for affected models and BIOS guidance.
  • Apply Dell-recommended BIOS updates where your systems match the advisory.
  • Restrict local administrative access on Dell endpoints and servers.
  • Prioritize BIOS remediation on systems handling sensitive data.

Validation and detection

  • Inventory Dell systems by model, service tag, and BIOS version.
  • Compare each BIOS version against Dell KB 000202194.
  • Confirm vulnerability scanners identify CVE-2022-26858 only on matching systems.
  • After remediation, verify BIOS version and rescan affected assets.
Prepared
Confidence
medium
Sources
3

Public sources used

Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.

Potential ATT&CK relevance

Conservative CVE-to-ATT&CK context

These mappings and lookup hints may be relevant to the vulnerability behavior, CWE, affected product, or exposure path. Glexia-inferred context is not an official MITRE, ATT&CK, CWE, or CVE Program mapping.

ATT&CK lookup starting points

Use these exact CWE pages and searches to review the Glexia ATT&CK library from this CVE's weakness and description context.

cwe · medium confidence lookup

CWE-287: Credential and account abuse lookup

Authentication and credential weaknesses can make valid-account abuse and credential telemetry useful review starting points. Open the exact CWE lookup page first, then review the ATT&CK searches from that MITRE weakness context. This is a Glexia lookup hint, not an official ATT&CK mapping.

Open ATT&CK lookup
cve · low confidence lookup

CVE-2022-26858 mapping review

Open the CVE-to-ATT&CK bridge for reviewed, inferred, or future official mappings tied to this CVE.

Open ATT&CK lookup
Vulnerability profileCVE Program record
Severity
Medium
CVSS
6.1 (3.1)
Known Exploited
No
Published

Vector: CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:C/C:H/I:L/A:N

Official CVE source material

CNA and ADP enrichment extracted from CVE v5

These fields come from the CVE record and ADP containers, not from Glexia's Take. They preserve time-varying source decisions such as CISA SSVC, KEV status, CVSS metrics, and provider references.

1CVSS vectors
3Timeline events
2ADP providers
2Source links

SSVC decision data

CISA-ADPCISA Coordinator
Timestamp
Version
2.0.3
Exploitation: noneAutomatable: noTechnical Impact: partial

CVSS vector scores

1 official score

We collect every scored CVSS vector available in the official CNA and ADP containers. When more than one version is present, the table keeps the source vectors side by side instead of collapsing them into the highest score.

ScoreVersionSeverityVectorExploitImpactSource
6.1CVSS 3.1MediumCVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:C/C:H/I:L/A:N0.84.7dell

Vulnerability scoring details

Base CVSS 3.1 score

6.1Medium
CVSS 3.1 vector shape for CVE-2022-26858Attack VectorAttack ComplexityPrivileges RequiredUser InteractionScopeConfidentiality ImpactIntegrity ImpactAvailability Impact

Vector: CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:C/C:H/I:L/A:N

Attack Vector
NetworkAdjacentLocalPhysical
Attack Complexity
LowHigh
Privileges Required
NoneLowHigh
User Interaction
NoneRequired
Scope
ChangedUnchanged
Confidentiality Impact
HighLowNone
Integrity Impact
HighLowNone
Availability Impact
HighLowNone

Vulnerability timeline

Timeline events are normalized from CVE metadata, CNA source timelines, ADP timelines, and KEV metadata when present.

  1. CVE reservedCVE Program

    The CVE ID was reserved by the assigning CNA.

  2. CVE publishedCVE Program

    The CVE record was published.

  3. CVE updatedCVE Program

    The CVE record metadata indicates this as the latest update time.

ADP provider summaries

CVECVE Program Container
CISA-ADPCISA ADP Vulnrichment
other:ssvc

Source materials

Affected products

Products and packages named in the record

VendorProductVersion / packageStatus
DellCPG BIOSunspecifiedListed
Weakness

CWE details

CWE-287

CWE links open Glexia weakness intelligence pages with official CWE context, developer remediation guidance, and related CVE mappings.