How severe is CVE-2026-28543?

CVE-2026-28543 has a CVSS 3.x base score of 4.4, rated medium severity. It is exploitable over local access with low attack complexity, requires high privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability high.

Is CVE-2026-28543 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (1st percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2026-28543?

CVE-2026-28543 primarily affects Huawei Harmonyos. In total, 2 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2026-28543?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

Does CVE-2026-28543 have an EU (EUVD) identifier?

Yes. CVE-2026-28543 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-9803.

When was CVE-2026-28543 published?

CVE-2026-28543 was published on 2026-03-05 and last updated on 2026-06-17.

CVE-2026-28543

CVE-2026-28543 is a medium-severity vulnerability in Huawei Harmonyos with a CVSS 3.x base score of 4.4. 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-362.

Key facts

Severity: Medium (CVSS 3.x base score 4.4)
EPSS exploit prediction: 0% (1st percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2026-9803
Weakness: CWE-362
Affected product: Huawei Harmonyos
Published: 2026-03-05
Last modified: 2026-06-17

Description

Race condition vulnerability in the maintenance and diagnostics module. Impact: Successful exploitation of this vulnerability may affect availability.

Frequently asked questions

What is CVE-2026-28543?: Race condition vulnerability in the maintenance and diagnostics module. Impact: Successful exploitation of this vulnerability may affect availability.
How severe is CVE-2026-28543?: CVE-2026-28543 has a CVSS 3.x base score of 4.4, rated medium severity. It is exploitable over local access with low attack complexity, requires high privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability high.
Is CVE-2026-28543 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (1st percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2026-28543?: CVE-2026-28543 primarily affects Huawei Harmonyos. In total, 2 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2026-28543?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
Does CVE-2026-28543 have an EU (EUVD) identifier?: Yes. CVE-2026-28543 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-9803.
When was CVE-2026-28543 published?: CVE-2026-28543 was published on 2026-03-05 and last updated on 2026-06-17.

References

Affected products (2)

cpe:2.3:o:huawei:harmonyos:5.1.0:*:*:*:*:*:*:*
cpe:2.3:o:huawei:harmonyos:6.0.0:*:*:*:*:*:*:*

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