CVE-2020-9074Network attack vector

Service interruption via malformed message exception

Published Jun 5, 2020 · Updated Aug 4, 2024

Denial of service in Huawei Honor 20, Honor View 20, and Honor 20 Pro firmware allows remote authenticated users to interrupt service. Huawei has not disclosed the component or exception type; it states only that the component mishandles an exception caused by a malformed message. Exploitation requires low privileges, user interaction, and the ability to send a message to the phone, and the reported consequence is limited to disruption of normal service.

CVSS severity5.3
Medium
EPSS probability0.73%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Denial of service in Huawei Honor 20, Honor View 20, and Honor 20 Pro firmware allows remote authenticated users to interrupt service. Huawei has not disclosed the component or exception type; it states only that the component mishandles an exception caused by a malformed message. Exploitation requires low privileges, user interaction, and the ability to send a message to the phone, and the reported consequence is limited to disruption of normal service.

The record

CVE
CVE-2020-9074
Published
Jun 5, 2020
Updated
Aug 4, 2024
Vendor
Huawei
Product
Honor 20
Classifications
CWE-755, T1642
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Jun 5, 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?

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

  1. Affected versionversion=Versions earlier than 10.0.0.186(C185E2R2P1)
  2. Affected versionversion=Versions earlier than 10.0.0.194(C432E9R5P1)

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

Huawei · Honor 20version=Versions earlier than 10.0.0.186(C185E2R2P1); version=Versions earlier than 10.0.0.194(C432E9R5P1)
Huawei · Honor View 20version=Versions earlier than 10.0.0.195(C00E62R4P11); version=Versions earlier than 10.0.0.200(C185E3R3P3); version=Versions earlier than 10.0.0.201(C10E5R4P3); version=Versions earlier than 10.0.0.201(C636E3R4P3)
Huawei · Honor 20 Proversion=Versions earlier than 10.0.0.194(C00E62R8P12); version=Versions earlier than 10.0.0.194(C10E3R3P2); version=Versions earlier than 10.0.0.194(C432E9R5P1); version=Versions earlier than 10.0.0.194(C636E3R3P1)

Published CVSS scores

5.3NIST NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
5.0NIST NVDAV:N/AC:L/Au:N/C:N/I:N/A:P
3.5HuaweiCVSS:3.0/AV:N/AC:L/PR:L/UI:R/S:U/C:N/I:N/A:L
3.3HuaweiCVSS:3.0/AV:N/AC:L/PR:L/UI:R/S:U/C:N/I:N/A:L/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 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-755Improper Handling of Exceptional Conditions
T1642Endpoint Denial of Service

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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