CVE-2025-27128

High

Published: 11 August 2025

Published

11 August 2025

Modified

12 August 2025

KEV Added

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Patch

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CVSS Score v3.1 8.4 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:N/A:H

EPSS Score 0.0007 22.1th percentile

Risk Priority 17 60% EPSS · 20% KEV · 20% CVSS

Summary

CVE-2025-27128 is a high-severity Use After Free (CWE-416) vulnerability in Openatom Openharmony. Its CVSS base score is 8.4 (High).

Operationally, ranked at the 22.1th percentile by exploit likelihood (below the median); it is not currently listed in the CISA KEV catalog.

in OpenHarmony v5.0.3 and prior versions allow a local attacker arbitrary code execution in tcb through use after free.

No named actor attribution yet. ATT&CK technique mapping in progress for this CVE.

openatom

openharmony

≤ 5.0.3

Likely Mitigating Controls AI

Per-CVE control mapping for this CVE has not run yet; the list below is derived from the weakness types (CWEs) cited in the NVD entry.

addresses: CWE-416

Use-after-free exploits that achieve arbitrary code execution are blocked or significantly hardened by non-executable pages and ASLR.