Security readout for executives and security teams
Plain-English summary
This is a Dell BIOS firmware issue where a local, highly privileged attacker could try to bypass firmware security checks during SMM. It is not described as remotely exploitable, but firmware-level weaknesses can undermine endpoint trust where affected Dell systems are present.
Executive priority
Treat as a targeted endpoint firmware risk, not an emergency internet-facing issue. Prioritize Dell fleet identification, firmware guidance review, and remediation for high-value or privileged-user devices.
Technical view
CVE-2022-26859 is a CWE-367 race condition in Dell CPG BIOS. The CVSS vector is AV:L/AC:H/PR:H/UI:N/S:C/C:L/I:H/A:N, scoring 6.1. The described path involves malicious input via SMI to bypass security checks during SMM.
Likely exposure
Exposure is limited to Dell systems using the affected CPG BIOS, but the provided sources do not specify models, BIOS versions, or CPEs. Asset and firmware inventory must be checked against Dell guidance.
Exploitation context
The source bundle does not show CISA KEV listing or cited evidence of active exploitation. Exploitation requires local access, high privileges, and high attack complexity, which reduces broad internet-scale risk but not privileged endpoint risk.
Researcher notes
The CVE record gives useful attack prerequisites and impact but lacks platform and fixed-version detail. Research should focus on Dell advisory mapping, SMM security-check bypass implications, and whether specific product lines remain unpatched.
Mitigation direction
- Review Dell advisory 000202194 for affected platforms and BIOS guidance.
- Inventory Dell endpoints and record model, service tag, and BIOS version.
- Apply Dell-provided BIOS updates only where Dell identifies applicable fixed releases.
- Restrict local administrator access on Dell endpoints.
- Track firmware update completion in endpoint management tooling.
Validation and detection
- Compare Dell asset inventory against Dell advisory applicability.
- Verify BIOS versions after remediation through endpoint management records.
- Confirm local admin membership is limited to approved users.
- Check vulnerability scanner findings for CVE-2022-26859 closure.
- Document systems where Dell guidance is unavailable or inconclusive.
Public sources used
Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.
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-367: Exact CWE lookup
Use the exact CWE identifier as the starting point before reviewing related ATT&CK behavior. 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 lookupCVE-2022-26859 mapping review
Open the CVE-to-ATT&CK bridge for reviewed, inferred, or future official mappings tied to this CVE.
Open ATT&CK lookup- 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:L/I:H/A:N
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.
SSVC decision data
CVSS vector scores
1 official scoreWe 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.
CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:C/C:L/I:H/A:N0.84.7dellVulnerability scoring details
Base CVSS 3.1 score
6.1MediumVector: CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:C/C:L/I:H/A:N
Vulnerability timeline
Timeline events are normalized from CVE metadata, CNA source timelines, ADP timelines, and KEV metadata when present.
- CVE reservedCVE Program
The CVE ID was reserved by the assigning CNA.
- CVE publishedCVE Program
The CVE record was published.
- CVE updatedCVE Program
The CVE record metadata indicates this as the latest update time.
ADP provider summaries
Source materials
- CVE List V5 sourceCVE List V5
- https://www.dell.com/support/kbdoc/000202194CVE reference, dell · x_refsource_MISC
Products and packages named in the record
CWE details
CWE links open Glexia weakness intelligence pages with official CWE context, developer remediation guidance, and related CVE mappings.
Time-of-check Time-of-use (TOCTOU) Race Condition
Time-of-check Time-of-use (TOCTOU) Race Condition represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.