How severe is CVE-2021-22480?

CVE-2021-22480 has a CVSS 3.x base score of 9.8, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2021-22480 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (50th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2021-22480?

CVE-2021-22480 affects Huawei Harmonyos. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2021-22480?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.

When was CVE-2021-22480 published?

CVE-2021-22480 was published on 2022-02-25 and last updated on 2026-06-17.

CVE-2021-22480

CVE-2021-22480 is a critical-severity vulnerability in Huawei Harmonyos with a CVSS 3.x base score of 9.8. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-190.

Key facts

Severity: Critical (CVSS 3.x base score 9.8)
CVSS v2: 7.5
EPSS exploit prediction: 1% (50th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-190
Affected product: Huawei Harmonyos
Published: 2022-02-25
Last modified: 2026-06-17

Description

The interface of a certain HarmonyOS module has an integer overflow vulnerability. Successful exploitation of this vulnerability may lead to heap memory overflow.

Frequently asked questions

What is CVE-2021-22480?: The interface of a certain HarmonyOS module has an integer overflow vulnerability. Successful exploitation of this vulnerability may lead to heap memory overflow.
How severe is CVE-2021-22480?: CVE-2021-22480 has a CVSS 3.x base score of 9.8, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2021-22480 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (50th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2021-22480?: CVE-2021-22480 affects Huawei Harmonyos. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2021-22480?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.
When was CVE-2021-22480 published?: CVE-2021-22480 was published on 2022-02-25 and last updated on 2026-06-17.

References

https://device.harmonyos.com/en/docs/security/update/security-bulletins-202109-0000001196270727

Affected products (1)

cpe:2.3:o:huawei:harmonyos:*:*:*:*:*:*:*:*

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