How severe is CVE-2026-28536?

CVE-2026-28536 has a CVSS 3.x base score of 9.6, rated critical severity. It is exploitable over an adjacent network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2026-28536 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (8th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2026-28536?

CVE-2026-28536 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-2026-28536?

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.

Does CVE-2026-28536 have an EU (EUVD) identifier?

Yes. CVE-2026-28536 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-9795.

When was CVE-2026-28536 published?

CVE-2026-28536 was published on 2026-03-05 and last updated on 2026-06-17.

CVE-2026-28536

CVE-2026-28536 is a critical-severity vulnerability in Huawei Harmonyos with a CVSS 3.x base score of 9.6. 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-305.

Key facts

Severity: Critical (CVSS 3.x base score 9.6)
EPSS exploit prediction: 0% (8th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2026-9795
Weakness: CWE-305
Affected product: Huawei Harmonyos
Published: 2026-03-05
Last modified: 2026-06-17

Description

Authentication bypass vulnerability in the device authentication module. Impact: Successful exploitation of this vulnerability will affect integrity and confidentiality.

Frequently asked questions

What is CVE-2026-28536?: Authentication bypass vulnerability in the device authentication module. Impact: Successful exploitation of this vulnerability will affect integrity and confidentiality.
How severe is CVE-2026-28536?: CVE-2026-28536 has a CVSS 3.x base score of 9.6, rated critical severity. It is exploitable over an adjacent network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2026-28536 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (8th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2026-28536?: CVE-2026-28536 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-2026-28536?: 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.
Does CVE-2026-28536 have an EU (EUVD) identifier?: Yes. CVE-2026-28536 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-9795.
When was CVE-2026-28536 published?: CVE-2026-28536 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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