dbcve.org
Inspiron 7347 BiosOperating system · Dell

CVE-2020-5376

MEDIUM · 6.8 CVSS v3.1 Published 2020-09-02
Mitigation only
No fix yet — a mitigation exists. There is no fixed release. A documented workaround reduces exposure in the meantime.
See remediation →
73/100
Remediation priority · Elevated
No privileges Zero-click

Official description Straight from the sourceThe vendor's or NVD's own wording, published unedited. Authoritative, but often terse — it says what broke, rarely what to do.

NVD · unedited
Dell Inspiron 7347 BIOS versions prior to A13 contain a UEFI BIOS Boot Services overwrite vulnerability. A local attacker with access to system memory may exploit this vulnerability by overwriting the EFI_BOOT_SERVICES structure to execute arbitrary code in System Management Mode (SMM).

Technical summary Written by usOur analysis, written from the advisory, the CVSS vector and the affected-version data. It adds context the advisory leaves out, and never invents facts that are not in the source.

dbcve analysis · high confidence

Dell Inspiron 7347 BIOS versions prior to A13 contain a UEFI BIOS Boot Services overwrite vulnerability where a local attacker with system memory access can overwrite the EFI_BOOT_SERVICES structure to achieve arbitrary code execution in System Management Mode (SMM), a highly privileged CPU mode operating below the OS.

MitigationUpdate the BIOS to version A13 or later to remediate this vulnerability; no practical workaround exists as this is a firmware-level flaw requiring the vendor-provided BIOS patch.

Verify against the referenced sources before acting — the references below are authoritative for this CVE, this summary is not.

Affected products & versions What the vendor confirmedThe version ranges the vendor confirmed as vulnerable. If your version sits inside a range here, treat yourself as exposed until you have upgraded.

NVD · CPE data
Inspiron 7347 BiosOperating system
Affected:< a13

CVSS breakdown How the score is builtThe industry scoring standard. It rates how the flaw is reached, what it takes to exploit, and what an attacker gains — the score is derived from those, not the other way round.

From the vector
Attack vector
Physical
Complexity
Low
Privileges
None
User interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High

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

Am I affected? How to checkSteps we derive from the advisory and the affected-version data, so you can decide whether this CVE reaches your setup. They are a guide, not a scan — your own configuration is the authority.

dbcve checks

Work through these to decide whether this CVE applies to you.

  1. Confirm system model is Dell Inspiron 7347
    Check the system model using 'systeminfo' or physically inspect the device label
    Affected if The system is not a Dell Inspiron 7347 (other models are not affected by this specific CVE)
  2. Retrieve the installed BIOS version
    Run 'wmic bios get smbiosbiosversion' or view BIOS information via 'msinfo32' or enter BIOS setup (F2 during boot)
    Affected if Unable to retrieve BIOS version (system may not be accessible)
  3. Compare version against affected range
    Examine the BIOS version string and compare numerically to version A13
    Affected if The BIOS version is a version number less than A13 (for example A12, A11, A10, or earlier)

A system is affected if it is a Dell Inspiron 7347 with a BIOS version installed that is earlier than version A13

Generated from the published advisory. Verify against your own configuration.

Check your environment

Paste your version and any relevant configuration and it will be compared against the affected criteria above. Do not include secrets or credentials.

AI-assisted, checked against the advisory. Informational, not a guarantee.

Remediation Closing itWhat it takes to close this. Where a vendor fix exists we point at it; where none exists we say so plainly, and can build one. Effort estimates are scoped from the advisory, not from your codebase.

From vendor data
Mitigation available No clean upgrade yet — mitigate in the meantime
Mitigation

Update the BIOS to version A13 or later to remediate this vulnerability; no practical workaround exists as this is a firmware-level flaw requiring the vendor-provided BIOS patch.

Fix this in Inspiron 7347 Bios Scoped from the published advisory
  • Consultation2.0 h
  • Implementation2.0 h
  • Testing2.0 h
  • Review / QA1.0 h
7.0 hours of engineering $1,240
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References Go to the primary sourcePrimary sources — vendor advisories, patches and trackers. Where our summary and a reference disagree, the reference wins.

Primary sources

Practitioner notes

Contributed

Peer-ranked notes from engineers who’ve handled CVE-2020-5376 in production — separate from our analysis above.

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What this is

A place for practitioners to share what actually worked: a mitigation you’ve tested, a configuration change, a version- or environment-specific caveat, or a link to a verified patch. The most useful notes rise to the top as peers upvote them, so the signal stays high.

What belongs here
  • Verified mitigations, workarounds, and config changes
  • Version or environment caveats, and links to real fixes
  • No weaponised exploit code, or anything meant to cause harm
  • No spam, self-promotion, credentials, or personal data