CVE-2020-1803

Information disclosure via wearable identity validation

Published Apr 20, 2020 · Updated Aug 4, 2024

Improper authentication in Huawei Honor V20 firmware allows adjacent attackers to disclose information through a smart wearable connection. The wearable-device authentication path insufficiently validates a connecting device's identity before exposing information from the smartphone. Exploitation requires adjacent-network access and certain information already present on the victim's phone; affected regional builds precede 10.0.0.179(C636E3R4P3), 10.0.0.180(C185E3R3P3), or 10.0.0.180(C432E10R3P4).

CVSS severity5.3
Medium
EPSS probability0.32%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Improper authentication in Huawei Honor V20 firmware allows adjacent attackers to disclose information through a smart wearable connection. The wearable-device authentication path insufficiently validates a connecting device's identity before exposing information from the smartphone. Exploitation requires adjacent-network access and certain information already present on the victim's phone; affected regional builds precede 10.0.0.179(C636E3R4P3), 10.0.0.180(C185E3R3P3), or 10.0.0.180(C432E10R3P4).

The record

CVE
CVE-2020-1803
Published
Apr 20, 2020
Updated
Aug 4, 2024
Vendor
Huawei
Product
Honor V20
Classifications
CWE-287
Attack vector
adjacent
Privileges
unauthenticated

Timeline

How it unfolded

  1. Apr 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?

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

  1. Affected versionversion=Versions earlier than 10.0.0.179(C636E3R4P3)
  2. Affected versionversion=Versions earlier than 10.0.0.180(C185E3R3P3)
  3. Affected versionversion=Versions earlier than 10.0.0.180(C432E10R3P4)

What conditions does exploitation require?

Attack vectoradjacent
Required privilegesunauthenticated

What is affected?

Huawei · Honor V20version=Versions earlier than 10.0.0.179(C636E3R4P3); version=Versions earlier than 10.0.0.180(C185E3R3P3); version=Versions earlier than 10.0.0.180(C432E10R3P4)

Published CVSS scores

5.3HuaweiCVSS:3.0/AV:A/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N
5.3NIST NVDCVSS:3.1/AV:A/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N
2.9NIST NVDAV:A/AC:M/Au:N/C:P/I:N/A:N
4.9HuaweiCVSS:3.0/AV:A/AC:H/PR:N/UI:N/S:U/C:H/I:N/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.

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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)
Vectoradjacent
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-287Improper Authentication

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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