CVE-2022-31753Network attack vector

Service interruption via externally controlled format strings

Published Jun 13, 2022 · Updated Aug 3, 2024

Format string injection in Huawei HarmonyOS 2.0 and EMUI 10.1.0 through 12.0.0 allows remote attackers to interrupt service. The voice wakeup module treats externally controlled text as a formatting template instead of ordinary data, allowing format directives to disrupt processing. Network reachability without authentication or user interaction is sufficient, and the documented consequence is limited to availability.

CVSS severity7.5
High
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

Format string injection in Huawei HarmonyOS 2.0 and EMUI 10.1.0 through 12.0.0 allows remote attackers to interrupt service. The voice wakeup module treats externally controlled text as a formatting template instead of ordinary data, allowing format directives to disrupt processing. Network reachability without authentication or user interaction is sufficient, and the documented consequence is limited to availability.

The record

CVE
CVE-2022-31753
Published
Jun 13, 2022
Updated
Aug 3, 2024
Vendor
Huawei Technologies Co., Ltd.
Product
HarmonyOS
Classifications
CWE-134, T1499
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=11.0.1; version=12.0.0

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 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-134Use of Externally-Controlled Format String
T1499Endpoint Denial of Service

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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