CVE-2020-5348

Physical code execution via EFI structure overwrite

Published Apr 3, 2020 · Updated Sep 17, 2024

Use-after-free in Dell Latitude 7202 Rugged Tablet BIOS before A28 allows physically proximate attackers to execute code in SMM. The affected SMM path uses EFI_BOOT_SERVICES after its lifetime ends, allowing the structure to be overwritten before subsequent use. Physical access is required; successful exploitation gains arbitrary code execution in SMM, beneath the operating system.

CVSS severity6.8
Medium
EPSS probability0.38%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Use-after-free in Dell Latitude 7202 Rugged Tablet BIOS before A28 allows physically proximate attackers to execute code in SMM. The affected SMM path uses EFI_BOOT_SERVICES after its lifetime ends, allowing the structure to be overwritten before subsequent use. Physical access is required; successful exploitation gains arbitrary code execution in SMM, beneath the operating system.

The record

CVE
CVE-2020-5348
Published
Apr 3, 2020
Updated
Sep 17, 2024
Vendor
Dell
Product
Dell Client Platform BIOS
Classifications
CWE-416
Attack vector
physical
Privileges
unauthenticated

Timeline

How it unfolded

  1. Apr 3, 2020CVE publishedPublication date reported by the CVE source.
  2. Sep 17, 2024Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

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  1. Affected versionversion=unspecified <A28

What conditions does exploitation require?

Attack vectorphysical
Required privilegesunauthenticated

What is affected?

Dell · Dell Client Platform BIOSversion=unspecified <A28

Published CVSS scores

7.8NIST NVDCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
6.8DellCVSS:3.1/AV:P/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
7.2NIST NVDAV:L/AC:L/Au:N/C:C/I:C/A:C

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

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No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectorphysical
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-416Use After Free

Public exploit references

No public exploit references are available in this record.

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Technologies

Your stack

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Your stack

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