CVE-2020-9149

SMS manipulation via package-name trustlist bypass

Published Apr 1, 2021 · Updated Aug 4, 2024

Authorization bypass in Huawei EMUI and Magic UI releases allows local users to insert or delete SMS messages through telephony apps. The telephony app interface trusts specific package names without adequately validating the calling app, allowing unapproved apps to pass its trustlist check. Exploitation requires a locally installed app with a matching package name and affects EMUI 10.0.0, 10.1.0, 10.1.1, and 11.0.0 and Magic UI 3.0.0, 3.1.0, 3.1.1, and 4.0.0; the reported consequence is limited to SMS insertion and deletion.

CVSS severity5.5
Medium
EPSS probability0.15%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Authorization bypass in Huawei EMUI and Magic UI releases allows local users to insert or delete SMS messages through telephony apps. The telephony app interface trusts specific package names without adequately validating the calling app, allowing unapproved apps to pass its trustlist check. Exploitation requires a locally installed app with a matching package name and affects EMUI 10.0.0, 10.1.0, 10.1.1, and 11.0.0 and Magic UI 3.0.0, 3.1.0, 3.1.1, and 4.0.0; the reported consequence is limited to SMS insertion and deletion.

The record

CVE
CVE-2020-9149
Published
Apr 1, 2021
Updated
Aug 4, 2024
Vendor
Unknown vendor
Product
Unknown product
Classifications
T1565.001
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. Apr 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

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Is a vulnerable build present?

Affected buildAffected product and version details are unavailable.

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

Affected products and versions are unavailable in this record.

Published CVSS scores

2.1NIST NVDAV:L/AC:L/Au:N/C:N/I:P/A:N
5.5NIST NVDCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:H/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 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectorlocal
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

T1565.001Stored Data Manipulation

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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