CVE-2020-1796

Unauthorized operations via incorrect authorization

Published Mar 20, 2020 · Updated Aug 4, 2024

Improper authorization in Huawei Mate 20 and Mate 30 Pro smartphones allows physically proximate attackers to perform unauthorized operations. Huawei has not disclosed the affected component or how its authorization check incorrectly accepts a low-privilege user. Exploitation requires physical possession of the phone and low-privilege access; the disclosed consequence is limited to unspecified operations reserved for a more privileged user.

CVSS severity2.1
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 and Mate 30 Pro smartphones allows physically proximate attackers to perform unauthorized operations. Huawei has not disclosed the affected component or how its authorization check incorrectly accepts a low-privilege user. Exploitation requires physical possession of the phone and low-privilege access; the disclosed consequence is limited to unspecified operations reserved for a more privileged user.

The record

CVE
CVE-2020-1796
Published
Mar 20, 2020
Updated
Aug 4, 2024
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-863, T1404
Attack vector
physical
Privileges
authenticated

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

Compare your product and version with the public record. A matching version still requires validation against your environment.

Is a vulnerable build present?

Affected buildAffected product and version details are unavailable.

What conditions does exploitation require?

Attack vectorphysical
Required privilegesauthenticated

What is affected?

Affected products and versions are unavailable in this record.

Published CVSS scores

4.6NIST NVDAV:L/AC:L/Au:N/C:P/I:P/A:P
6.6NIST NVDCVSS:3.1/AV:P/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
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
2.1Huawei PSIRTCVSS:3.0/AV:P/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.

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

No observations available

Sep 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectorphysical
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-863Incorrect Authorization
T1404Exploitation for Privilege Escalation

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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