CVE-2022-31760Network attack vector

Lock-screen data exposure and modification via USSD dialogs

Published Jun 13, 2022 · Updated Aug 3, 2024

Lock-screen bypass in affected HarmonyOS and EMUI releases allows remote attackers to expose or alter data through carrier USSD dialogs. The carrier-customized USSD service displays an interactive dialog while the device screen remains locked instead of enforcing the lock-screen access boundary. The flaw requires a carrier-customized USSD service and affects HarmonyOS 2.0 and EMUI 10.1.0, 10.1.1, 11.0.0, and 12.0.0; Huawei has not disclosed further implementation detail.

CVSS severity9.1
Critical
EPSS probability0.65%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Lock-screen bypass in affected HarmonyOS and EMUI releases allows remote attackers to expose or alter data through carrier USSD dialogs. The carrier-customized USSD service displays an interactive dialog while the device screen remains locked instead of enforcing the lock-screen access boundary. The flaw requires a carrier-customized USSD service and affects HarmonyOS 2.0 and EMUI 10.1.0, 10.1.1, 11.0.0, and 12.0.0; Huawei has not disclosed further implementation detail.

The record

CVE
CVE-2022-31760
Published
Jun 13, 2022
Updated
Aug 3, 2024
Vendor
Huawei Technologies Co., Ltd.
Product
HarmonyOS
Classifications
Unavailable
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Jun 13, 2022CVE publishedPublication date reported by the CVE source.
  2. Aug 3, 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=2.0

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Huawei Technologies Co., Ltd. · HarmonyOSversion=2.0
MindSpore · EMUIversion=10.1.0; version=10.1.1; version=11.0.0; version=12.0.0

Published CVSS scores

6.4NIST NVDAV:N/AC:L/Au:N/C:P/I:P/A:N
9.1NIST NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/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)
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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