CVE-2021-38591

Local NvRAM modification via misconfigured debug command

Published Aug 11, 2021 · Updated Aug 4, 2024

Improper debug-command configuration in LG mobile devices running Android P or Q allows local users to modify NvRAM content. A debug command is configured to permit writes to NvRAM content that should not be alterable by its low-privilege caller. The flaw requires local access and affects devices using mt6762, mt6765, or mt6883 chipsets, with no reported confidentiality or availability impact.

CVSS severity3.3
Low
EPSS probability0.10%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Improper debug-command configuration in LG mobile devices running Android P or Q allows local users to modify NvRAM content. A debug command is configured to permit writes to NvRAM content that should not be alterable by its low-privilege caller. The flaw requires local access and affects devices using mt6762, mt6765, or mt6883 chipsets, with no reported confidentiality or availability impact.

The record

CVE
CVE-2021-38591
Published
Aug 11, 2021
Updated
Aug 4, 2024
Vendor
Unknown vendor
Product
Unknown product
Classifications
Unavailable
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. Aug 11, 2021CVE publishedPublication date reported by the CVE source.
  2. Aug 4, 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?

Affected buildAffected product and version details are unavailable.

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

Affected products and versions are unavailable in this record.

Published CVSS scores

2.1NIST NVDAV:L/AC:L/Au:N/C:N/I:P/A:N
3.3NIST NVDCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N

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)
Vectorlocal
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

No sourced classifications are available.

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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