CVE-2020-1831

Digital Balance bypass via insufficient usage restrictions

Published May 29, 2020 · Updated Aug 4, 2024

Improper authorization in Huawei Mate 20 before 10.0.0.195(SP31C00E74R3P8) allows physically proximate attackers to bypass Digital Balance limits. The Digital Balance usage-time enforcement fails to preserve a limited user's configured restriction after a series of PC-assisted operations. Exploitation requires physical control of the phone as a limited user and affects only enforcement of that user's usage-time limit.

CVSS severity2.4
Low
EPSS probability0.20%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Improper authorization in Huawei Mate 20 before 10.0.0.195(SP31C00E74R3P8) allows physically proximate attackers to bypass Digital Balance limits. The Digital Balance usage-time enforcement fails to preserve a limited user's configured restriction after a series of PC-assisted operations. Exploitation requires physical control of the phone as a limited user and affects only enforcement of that user's usage-time limit.

The record

CVE
CVE-2020-1831
Published
May 29, 2020
Updated
Aug 4, 2024
Vendor
MindSpore
Product
Huawei Mate 20
Classifications
CWE-863
Attack vector
physical
Privileges
authenticated

Timeline

How it unfolded

  1. May 29, 2020CVE 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?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=Versions earlier than 10.0.0.195(SP31C00E74R3P8)

What conditions does exploitation require?

Attack vectorphysical
Required privilegesauthenticated

What is affected?

MindSpore · Huawei Mate 20version=Versions earlier than 10.0.0.195(SP31C00E74R3P8)

Published CVSS scores

2.3HuaweiCVSS:3.0/AV:P/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N/E:F/RL:O/RC:C
2.4HuaweiCVSS:3.0/AV:P/AC:L/PR:N/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)
Vectorphysical
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-863Incorrect Authorization

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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