Device availability impairment via IMS out-of-bounds write
Published Mar 5, 2026 · Updated Mar 5, 2026
Out-of-bounds write in the IMS module in Huawei HarmonyOS and EMUI allows remote attackers to impair device availability via network input. The IMS module writes beyond a destination buffer, but Huawei has not disclosed the affected function, input field, or malformed-message path. The specific availability failure mode is undisclosed; exploitation requires no privileges or user interaction and high attack complexity.
Summary
What happened
Out-of-bounds write in the IMS module in Huawei HarmonyOS and EMUI allows remote attackers to impair device availability via network input. The IMS module writes beyond a destination buffer, but Huawei has not disclosed the affected function, input field, or malformed-message path. The specific availability failure mode is undisclosed; exploitation requires no privileges or user interaction and high attack complexity.
The record
- CVE
- CVE-2026-28552
- Published
- Mar 5, 2026
- Updated
- Mar 5, 2026
- Vendor
- MindSpore
- Product
- HarmonyOS
- Classifications
- CWE-787, CWE-19, T1642
- Attack vector
- network
- Privileges
- unauthenticated
Timeline
How it unfolded
- Mar 5, 2026CVE publishedPublication date reported by the CVE source.
- Mar 5, 2026Record 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.
- Affected versionversion=4.0.0
- Affected versionversion=4.2.0
- Affected versionversion=4.3.0
- Affected versionversion=4.3.1
- Affected versionversion=5.1.0
- Affected versionversion=6.0.0
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
Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.
Weakness, pattern, technique
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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