CVE-2020-1795

Physical bypass of Digital Balance limit

Published Mar 20, 2020 · Updated Aug 4, 2024

Logic error in Huawei Mate 20 and Mate 30 Pro smartphones before fixed builds allows attackers to bypass Digital Balance limits via repeated operations. The Digital Balance software fails to restrict certain operations while the function is enabled, allowing a sequence of operations to evade the configured limit. Exploitation requires physical possession of the smartphone; impact is limited to defeating usage controls, with no reported confidentiality or availability effect.

CVSS severity2.1
Low
EPSS probability0.21%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Logic error in Huawei Mate 20 and Mate 30 Pro smartphones before fixed builds allows attackers to bypass Digital Balance limits via repeated operations. The Digital Balance software fails to restrict certain operations while the function is enabled, allowing a sequence of operations to evade the configured limit. Exploitation requires physical possession of the smartphone; impact is limited to defeating usage controls, with no reported confidentiality or availability effect.

The record

CVE
CVE-2020-1795
Published
Mar 20, 2020
Updated
Aug 4, 2024
Vendor
Unknown vendor
Product
Unknown product
Classifications
Unavailable
Attack vector
physical
Privileges
Unavailable

Timeline

How it unfolded

  1. Mar 20, 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?

Affected buildAffected product and version details are unavailable.

What conditions does exploitation require?

Attack vectorphysical
Required privilegesUnavailable in this record.

What is affected?

Affected products and versions are unavailable in this record.

Published CVSS scores

2.1Huawei PSIRTCVSS:3.0/AV:P/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N
2.0Huawei PSIRTCVSS:3.0/AV:P/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N/E:F/RL:O/RC: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.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

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
PrivilegesUnavailable
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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