What’s Vulnerable › Vulnerabilities

CVE-2021-39990

• Severity: critical (CVSS 9.8 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.8% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2022-01-03 · updated 2026-06-17
• Weakness: CWE-787

Description

The screen lock module has a Stack-based Buffer Overflow vulnerability.Successful exploitation of this vulnerability may affect user experience.

Affected products

• Huawei HarmonyOS: before 2.0 — fixed in 2.0

How to fix

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

References

• https://device.harmonyos.com/en/docs/security/update/security-bulletins-202111-0000001217889667
• https://device.harmonyos.com/en/docs/security/update/security-bulletins-202111-0000001217889667

Get alerted when CVE-2021-39990 or the next vulnerability affects your stack