What’s Vulnerable › Vulnerabilities

CVE-2021-39998

• Severity: high (CVSS 7.5 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.7% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2022-01-10 · updated 2026-06-17

Description

There is Vulnerability of APIs being concurrently called for multiple times in HwConnectivityExService a in smartphones. Successful exploitation of this vulnerability may cause the system to crash and restart.

Affected products

• Huawei EMUI: 11.0.0, 11.0.1
• Huawei HarmonyOS: before 2.0 — fixed in 2.0
• Huawei Magic UI: 4.0.0

How to fix

Upgrade to a fixed version: Huawei HarmonyOS 2.0. Check the vendor advisory for mitigations.

References

• https://consumer.huawei.com/en/support/bulletin/2021/12/
• https://device.harmonyos.com/en/docs/security/update/security-bulletins-202112-0000001183296718
• https://consumer.huawei.com/en/support/bulletin/2021/12/
• https://device.harmonyos.com/en/docs/security/update/security-bulletins-202112-0000001183296718

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