How severe is CVE-2026-28553?

CVE-2026-28553 has a CVSS 3.x base score of 6.9, rated medium severity. It is exploitable over local access with high attack complexity, requires no privileges and user interaction. Impact on confidentiality is high, integrity low, and availability low.

Is CVE-2026-28553 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (4th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2026-28553?

CVE-2026-28553 primarily affects Huawei Harmonyos. In total, 7 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2026-28553?

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

Does CVE-2026-28553 have an EU (EUVD) identifier?

Yes. CVE-2026-28553 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-21791.

When was CVE-2026-28553 published?

CVE-2026-28553 was published on 2026-04-13 and last updated on 2026-06-17.

CVE-2026-28553

CVE-2026-28553 is a medium-severity vulnerability in Huawei Harmonyos with a CVSS 3.x base score of 6.9. 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-275.

Key facts

Severity: Medium (CVSS 3.x base score 6.9)
EPSS exploit prediction: 0% (4th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2026-21791
Weakness: CWE-275
Affected product: Huawei Harmonyos
Published: 2026-04-13
Last modified: 2026-06-17

Description

Vulnerability of improper permission control in the theme setting module. Impact: Successful exploitation of this vulnerability may affect service confidentiality.

Frequently asked questions

What is CVE-2026-28553?: Vulnerability of improper permission control in the theme setting module. Impact: Successful exploitation of this vulnerability may affect service confidentiality.
How severe is CVE-2026-28553?: CVE-2026-28553 has a CVSS 3.x base score of 6.9, rated medium severity. It is exploitable over local access with high attack complexity, requires no privileges and user interaction. Impact on confidentiality is high, integrity low, and availability low.
Is CVE-2026-28553 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (4th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2026-28553?: CVE-2026-28553 primarily affects Huawei Harmonyos. In total, 7 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2026-28553?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
Does CVE-2026-28553 have an EU (EUVD) identifier?: Yes. CVE-2026-28553 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-21791.
When was CVE-2026-28553 published?: CVE-2026-28553 was published on 2026-04-13 and last updated on 2026-06-17.

References

https://consumer.huawei.com/en/support/bulletin/2026/4/

Affected products (7)

cpe:2.3:o:huawei:harmonyos:4.0.0:*:*:*:*:*:*:*
cpe:2.3:o:huawei:harmonyos:4.2.0:*:*:*:*:*:*:*
cpe:2.3:o:huawei:harmonyos:4.3.0:*:*:*:*:*:*:*
cpe:2.3:o:huawei:harmonyos:4.3.1:*:*:*:*:*:*:*
cpe:2.3:o:huawei:emui:14.0.0:*:*:*:*:*:*:*
cpe:2.3:o:huawei:emui:14.2.0:*:*:*:*:*:*:*
cpe:2.3:o:huawei:emui:15.0.0:*:*:*:*:*:*:*

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