CVE-2023-52545Network attack vector

Unauthenticated service interruption via undefined Calendar permissions

Published Apr 8, 2024 · Updated Aug 26, 2024

Incorrect permissions in Huawei Calendar on HarmonyOS 3.0.0, 3.1.0, and 4.0.0 and EMUI 13.0.0 allow remote attackers to interrupt service. Huawei has not published which Calendar resource receives undefined permissions or which operation accepts unauthorized access. Network reachability is sufficient; successful exploitation affects availability without a reported ability to read or alter data.

CVSS severity7.5
High
EPSS probability0.35%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Incorrect permissions in Huawei Calendar on HarmonyOS 3.0.0, 3.1.0, and 4.0.0 and EMUI 13.0.0 allow remote attackers to interrupt service. Huawei has not published which Calendar resource receives undefined permissions or which operation accepts unauthorized access. Network reachability is sufficient; successful exploitation affects availability without a reported ability to read or alter data.

The record

CVE
CVE-2023-52545
Published
Apr 8, 2024
Updated
Aug 26, 2024
Vendor
MindSpore
Product
HarmonyOS
Classifications
CWE-276, T1499
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Apr 8, 2024CVE publishedPublication date reported by the CVE source.
  2. Aug 26, 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=3.0.0
  2. Affected versionversion=3.1.0
  3. Affected versionversion=4.0.0

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

MindSpore · HarmonyOSversion=3.0.0; version=3.1.0; version=4.0.0
MindSpore · EMUIversion=13.0.0

Published CVSS scores

7.5CISA ADP VulnrichmentCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

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

CWE-276Incorrect Default Permissions
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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