CVE-2025-54630

Service interruption via unchecked DFA data length

Published Aug 6, 2025 · Updated Aug 6, 2025

Heap-based buffer overflow in Huawei HarmonyOS 4.3.0 and 5.0.1 allows physically proximate attackers to interrupt service via crafted data. The DFA module fails to verify an input's data length before processing it, allowing the input to overflow a heap buffer. Physical access is required; Huawei reports availability impact but does not disclose whether exploitation causes a crash, hang, or reboot.

CVSS severity6.8
Medium
EPSS probability0.23%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Heap-based buffer overflow in Huawei HarmonyOS 4.3.0 and 5.0.1 allows physically proximate attackers to interrupt service via crafted data. The DFA module fails to verify an input's data length before processing it, allowing the input to overflow a heap buffer. Physical access is required; Huawei reports availability impact but does not disclose whether exploitation causes a crash, hang, or reboot.

The record

CVE
CVE-2025-54630
Published
Aug 6, 2025
Updated
Aug 6, 2025
Vendor
MindSpore
Product
HarmonyOS
Classifications
CWE-122, T1499
Attack vector
physical
Privileges
unauthenticated

Timeline

How it unfolded

  1. Aug 6, 2025CVE publishedPublication date reported by the CVE source.
  2. Aug 6, 2025Record 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=4.3.0
  2. Affected versionversion=5.0.1

What conditions does exploitation require?

Attack vectorphysical
Required privilegesunauthenticated

What is affected?

MindSpore · HarmonyOSversion=4.3.0; version=5.0.1

Published CVSS scores

6.8Huawei TechnologiesCVSS:3.1/AV:P/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
7.5NIST NVDCVSS: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.

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No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectorphysical
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-122Heap-based Buffer Overflow
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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