How severe is CVE-2026-28539?

CVE-2026-28539 has a CVSS 3.x base score of 6.2, rated medium severity. It is exploitable over local access with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity none, and availability none.

Is CVE-2026-28539 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-2026-28539?

CVE-2026-28539 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-2026-28539?

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

Does CVE-2026-28539 have an EU (EUVD) identifier?

Yes. CVE-2026-28539 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-9800.

When was CVE-2026-28539 published?

CVE-2026-28539 was published on 2026-03-05 and last updated on 2026-06-17.

CVE-2026-28539

CVE-2026-28539 is a medium-severity vulnerability in Huawei Harmonyos with a CVSS 3.x base score of 6.2. 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-19.

Key facts

Severity: Medium (CVSS 3.x base score 6.2)
EPSS exploit prediction: 0% (1st percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2026-9800
Weakness: CWE-19
Affected product: Huawei Harmonyos
Published: 2026-03-05
Last modified: 2026-06-17

Description

Data processing vulnerability in the certificate management module. Impact: Successful exploitation of this vulnerability may affect service confidentiality.

Frequently asked questions

What is CVE-2026-28539?: Data processing vulnerability in the certificate management module. Impact: Successful exploitation of this vulnerability may affect service confidentiality.
How severe is CVE-2026-28539?: CVE-2026-28539 has a CVSS 3.x base score of 6.2, rated medium severity. It is exploitable over local access with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity none, and availability none.
Is CVE-2026-28539 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-2026-28539?: CVE-2026-28539 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-2026-28539?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
Does CVE-2026-28539 have an EU (EUVD) identifier?: Yes. CVE-2026-28539 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-9800.
When was CVE-2026-28539 published?: CVE-2026-28539 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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