How severe is CVE-2026-28733?

CVE-2026-28733 has a CVSS 3.x base score of 6.5, rated medium severity. It is exploitable over local access with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability high.

Is CVE-2026-28733 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (3rd percentile), an estimate of the probability of exploitation in the next 30 days.

How do I fix CVE-2026-28733?

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

Does CVE-2026-28733 have an EU (EUVD) identifier?

Yes. CVE-2026-28733 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-30834.

When was CVE-2026-28733 published?

CVE-2026-28733 was published on 2026-05-19 and last updated on 2026-06-17.

CVE-2026-28733

CVE-2026-28733 is a medium-severity vulnerability with a CVSS 3.x base score of 6.5. 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-416.

Key facts

Severity: Medium (CVSS 3.x base score 6.5)
EPSS exploit prediction: 0% (3rd percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2026-30834
Weakness: CWE-416
Published: 2026-05-19
Last modified: 2026-06-17

Description

in OpenHarmony v6.0 and prior versions allow a local attacker arbitrary code execution.

Frequently asked questions

What is CVE-2026-28733?: in OpenHarmony v6.0 and prior versions allow a local attacker arbitrary code execution.
How severe is CVE-2026-28733?: CVE-2026-28733 has a CVSS 3.x base score of 6.5, rated medium severity. It is exploitable over local access with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability high.
Is CVE-2026-28733 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (3rd percentile), an estimate of the probability of exploitation in the next 30 days.
How do I fix CVE-2026-28733?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
Does CVE-2026-28733 have an EU (EUVD) identifier?: Yes. CVE-2026-28733 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-30834.
When was CVE-2026-28733 published?: CVE-2026-28733 was published on 2026-05-19 and last updated on 2026-06-17.

References

https://gitcode.com/openharmony/security/tree/master/zh/security-disclosure/2026/2026-05.md

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