Service data modification via unchecked HVB length
Published Aug 6, 2025 · Updated Aug 6, 2025
Buffer overflow in the HVB module in Huawei HarmonyOS and EMUI allows physically proximate attackers to alter service data. The module fails to verify supplied data length before a buffer copy; Huawei has not disclosed the affected function or input format. Exploitation requires physical access but no prior privileges or user interaction, and the published consequence includes unauthorized service-data modification.
Summary
What happened
Buffer overflow in the HVB module in Huawei HarmonyOS and EMUI allows physically proximate attackers to alter service data. The module fails to verify supplied data length before a buffer copy; Huawei has not disclosed the affected function or input format. Exploitation requires physical access but no prior privileges or user interaction, and the published consequence includes unauthorized service-data modification.
The record
- CVE
- CVE-2025-54632
- Published
- Aug 6, 2025
- Updated
- Aug 6, 2025
- Vendor
- MindSpore
- Product
- HarmonyOS
- Classifications
- CWE-120
- Attack vector
- physical
- Privileges
- unauthenticated
Timeline
How it unfolded
- Aug 6, 2025CVE publishedPublication date reported by the CVE source.
- 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?
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- Affected versionversion=4.3.1
- Affected versionversion=5.0.1
- Affected versionversion=5.1.0
What conditions does exploitation require?
What is affected?
Published CVSS scores
CVSS describes severity. EPSS estimates exploitation probability.
Attacks
What attackers are doing with it
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Weakness, pattern, technique
Public exploit references
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Technologies
Your stack
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Your stack
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