Security readout for executives and security teams
Plain-English summary
This flaw affects Dell Inspiron 7347 laptops running BIOS versions before A13. Someone with physical access and access to system memory could potentially run code in highly privileged firmware mode, which can undermine operating-system security controls.
Executive priority
Treat as a moderate firmware-risk issue. It is not remotely exploitable from the provided evidence, but successful exploitation could compromise confidentiality, integrity, and availability beneath the operating system.
Technical view
The vulnerability is a UEFI BIOS Boot Services overwrite issue in Dell Inspiron 7347 BIOS before A13. A local physical attacker with system-memory access may overwrite the EFI_BOOT_SERVICES structure and execute arbitrary code in System Management Mode. CVSS 3.1 score is 6.8.
Likely exposure
Exposure appears limited to Dell Inspiron 7347 systems with BIOS versions earlier than A13. The source bundle identifies Dell CPG BIOS generally, but the CVE description specifically names Inspiron 7347 BIOS.
Exploitation context
The source bundle does not cite active exploitation, and KEV status is false. The CVSS vector requires physical access, no privileges, no user interaction, and low attack complexity once the access condition exists.
Researcher notes
Key constraints are physical attack vector and system-memory access. The source bundle provides no exploit-in-the-wild evidence and no details beyond the Boot Services overwrite path to SMM code execution. Avoid assuming broader Dell model impact without vendor confirmation.
Mitigation direction
- Inventory Dell Inspiron 7347 systems and record BIOS versions.
- Update affected systems to BIOS A13 or later per Dell guidance.
- Prioritize devices used by executives, administrators, or privileged engineering teams.
- Restrict physical access to affected laptops until firmware is updated.
- Check Dell advisory SLN322616 for current vendor guidance.
Validation and detection
- Confirm each asset is Dell Inspiron 7347 before scoping remediation.
- Verify BIOS version is A13 or later after update.
- Retain asset and firmware evidence for vulnerability-management closure.
- Review Dell advisory SLN322616 for any model-specific update instructions.
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
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CWE-416: 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-2020-5376 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
- 6.8 (3.1)
- Known Exploited
- No
- Published
Vector: CVSS:3.1/AV:P/AC:L/PR:N/UI:N/S:U/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.
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:P/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H0.95.9Primary CVE scoreVulnerability scoring details
Base CVSS 3.1 score
6.8MediumVector: CVSS:3.1/AV:P/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Source materials
- CVE List V5 sourceCVE List V5
- https://www.dell.com/support/article/SLN322616CVE reference · 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.
Use After Free
Use After Free represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.