CVE-2020-9158Network attack vector

Unauthenticated service interruption via missing cryptographic step

Published Jul 1, 2021 · Updated Aug 4, 2024

Missing cryptographic step in Huawei Share on affected EMUI and Magic UI versions allows remote attackers to interrupt the service. Huawei has not disclosed which cryptographic step is missing or how the triggering input reaches Samgr. No privileges or user interaction are required, and the reported consequence is limited to service disruption rather than data access or modification.

CVSS severity7.5
High
EPSS probability0.68%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Missing cryptographic step in Huawei Share on affected EMUI and Magic UI versions allows remote attackers to interrupt the service. Huawei has not disclosed which cryptographic step is missing or how the triggering input reaches Samgr. No privileges or user interaction are required, and the reported consequence is limited to service disruption rather than data access or modification.

The record

CVE
CVE-2020-9158
Published
Jul 1, 2021
Updated
Aug 4, 2024
Vendor
Huawei
Product
Huawei Share
Classifications
Unavailable
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Jul 1, 2021CVE 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=EMUI 10.0.0
  2. Affected versionversion=EMUI 10.1.0
  3. Affected versionversion=EMUI 10.1.1
  4. Affected versionversion=EMUI 11.0.0
  5. Affected versionversion=EMUI 8.0
  6. Affected versionversion=EMUI 8.2
  7. Affected versionversion=EMUI 9.1.0
  8. Affected versionversion=EMUI 9.1.1
  9. Affected versionversion=Magic UI 2.1.1
  10. Affected versionversion=Magic UI 3.0.0
  11. Affected versionversion=Magic UI 3.1.0
  12. Affected versionversion=Magic UI 3.1.1
  13. Affected versionversion=Magic UI 4.0.0

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Huawei · Huawei Shareversion=EMUI 10.0.0; version=EMUI 10.1.0; version=EMUI 10.1.1; version=EMUI 11.0.0; version=EMUI 8.0; version=EMUI 8.2; version=EMUI 9.1.0; version=EMUI 9.1.1; version=Magic UI 2.1.1; version=Magic UI 3.0.0; version=Magic UI 3.1.0; version=Magic UI 3.1.1; version=Magic UI 4.0.0

Published CVSS scores

7.5NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
5.0NVDAV:N/AC:L/Au:N/C:N/I:N/A:P

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)
Vectornetwork
Privilegesunauthenticated
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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