Security readout for executives and security teams
Plain-English summary
This is a Dell BIOS vulnerability that could let a highly privileged local attacker run code in System Management Mode, a very powerful firmware layer. It is not described as remotely exploitable, but compromised or malicious local administrators on affected Dell systems could gain deep control below the operating system.
Executive priority
Treat as high priority for Dell firmware governance, not as an emergency internet-facing incident. Prioritize inventory and vendor-guided BIOS updates, especially for high-value laptops, workstations, and systems used by administrators or security staff.
Technical view
CVE-2022-26860 is a stack-based buffer overflow in Dell CPG BIOS. The CVSS vector requires local access, high attack complexity, and high privileges, with no user interaction. Successful exploitation could bypass security checks and execute arbitrary code in SMM, affecting confidentiality, integrity, and availability.
Likely exposure
Exposure is limited to Dell systems running affected CPG BIOS versions. The provided sources do not list specific models, BIOS versions, or fixed versions, so asset owners must map Dell hardware and firmware versions against Dell advisory 000202194.
Exploitation context
The CVE is not listed as CISA KEV in the provided bundle, and no cited source states active exploitation. Exploitation requires local, highly privileged access and high complexity, reducing broad internet-scale risk but increasing concern after endpoint compromise.
Researcher notes
Evidence is incomplete for affected model and fixed-version granularity. The key technical issue is SMM code execution from a BIOS stack overflow reachable by a privileged local attacker. Avoid assuming exploit availability, affected product breadth, or remediation details beyond Dell guidance.
Mitigation direction
- Check Dell advisory 000202194 for affected models and BIOS updates.
- Inventory Dell endpoints and servers with CPG BIOS.
- Apply Dell-provided BIOS updates through approved firmware maintenance processes.
- Prioritize sensitive, shared, or administrator-accessible systems.
- Limit unnecessary local administrator access until firmware status is confirmed.
Validation and detection
- Record model, service tag, and BIOS version for Dell assets.
- Compare firmware versions against Dell advisory 000202194.
- Verify BIOS version after any vendor update is applied.
- Confirm local administrator access is restricted and reviewed.
- Track exceptions where Dell guidance is unavailable or updates are deferred.
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-121: 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 lookupExecution behavior lookup
The CVE wording references code or command execution, so execution technique review may help defensive triage. This is a Glexia inferred lookup path, not an official MITRE, ATT&CK, or CVE Program mapping.
Open ATT&CK lookupCVE-2022-26860 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
- High
- CVSS
- 7.5 (3.1)
- Known Exploited
- No
- Published
Vector: CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:C/C:H/I:H/A:H
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:H/I:H/A:H0.86dellVulnerability scoring details
Base CVSS 3.1 score
7.5HighVector: CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:C/C:H/I:H/A:H
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.
Stack-based Buffer Overflow
Stack-based Buffer Overflow represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.