CVE-2025-25278
Official description Straight from the sourceThe vendor's or NVD's own wording, published unedited. Authoritative, but often terse — it says what broke, rarely what to do.
NVD · uneditedin OpenHarmony v5.0.3 and prior versions allow a local attacker arbitrary code execution in tcb through race condition.
Technical summary Written by usOur analysis, written from the advisory, the CVSS vector and the affected-version data. It adds context the advisory leaves out, and never invents facts that are not in the source.
dbcve analysis · moderate confidenceA race condition vulnerability in OpenHarmony v5.0.3 and prior versions allows a local attacker to achieve arbitrary code execution within the Trusted Computing Base (TCB), likely through time-of-check-to-time-of-use (TOCTOU) manipulation of shared state or resources.
Verify against the referenced sources before acting — the references below are authoritative for this CVE, this summary is not.
Affected products & versions What the vendor confirmedThe version ranges the vendor confirmed as vulnerable. If your version sits inside a range here, treat yourself as exposed until you have upgraded.
NVD · CPE data<= 5.0.3CVSS breakdown How the score is builtThe industry scoring standard. It rates how the flaw is reached, what it takes to exploit, and what an attacker gains — the score is derived from those, not the other way round.
From the vector- Attack vector
- Local
- Complexity
- High
- Privileges
- Low
- User interaction
- None
- Scope
- Unchanged
- Confidentiality
- High
- Integrity
- High
- Availability
- High
CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H
Am I affected? How to checkSteps we derive from the advisory and the affected-version data, so you can decide whether this CVE reaches your setup. They are a guide, not a scan — your own configuration is the authority.
dbcve checksWork through these to decide whether this CVE applies to you.
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Identify OpenHarmony versionRun 'paramctl get const.product.version' or check /etc/version or /system/etc/param/ohos.prop for the OpenHarmony version stringAffected if The installed version is 5.0.3 or any version prior to it (e.g., 5.0.2, 5.0.1, 4.x releases)
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Locate Trusted Computing Base componentsEnumerate directories containing TCB-critical binaries and libraries such as /vendor/bin, /system/bin, /sbin, or custom secure partition paths used by your OpenHarmony buildAffected if TCB components exist in the environment (the vulnerability targets TCB, so any presence of TCB components makes the system potentially affected)
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Check for privileged local processesReview running processes with elevated privileges or capabilities using 'ps -ael' or 'capsh --print' to identify processes that interact with TCB resourcesAffected if Privileged processes that manipulate shared state or resources within the TCB are running on the system
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Monitor for TOCTOU indicatorsUse file integrity monitoring or audit logs to detect rapid repeated access attempts to the same TCB-related files or resources in quick successionAffected if Multiple access attempts to the same TCB resource occur within a time window suggestive of race condition exploitation
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Inspect for unauthorized code execution artifactsExamine /data/local/tmp, /tmp, and other writable locations for unexpected executable files or newly deployed native libraries associated with TCB componentsAffected if Unexpected executables or modified TCB binaries are found in writable directories
You are affected if your OpenHarmony version is 5.0.3 or earlier and your system contains TCB components that could be targeted by a local race condition exploit.
Generated from the published advisory. Verify against your own configuration.
Remediation Closing itWhat it takes to close this. Where a vendor fix exists we point at it; where none exists we say so plainly, and can build one. Effort estimates are scoped from the advisory, not from your codebase.
From vendor dataUpgrade to a patched version of OpenHarmony beyond v5.0.3 once available; if immediate patching is not possible, minimize local privileged access and monitor for suspicious process activity targeting TCB components.
- Consultation8.0 h
- Implementation16.0 h
- Testing24.0 h
- Review / QA12.0 h
An estimate, not a bill — we confirm scope with you before any work starts. Need it this week? Rush from $16,384.
Scan for this in your stack
Free · runs locallyCheck whether your project pulls in CVE-2025-25278 — or any other known-vulnerable package — straight from your lock files. Free and open source; it runs locally and uploads nothing.
References Go to the primary sourcePrimary sources — vendor advisories, patches and trackers. Where our summary and a reference disagree, the reference wins.
Primary sourcesPractitioner notes
ContributedPeer-ranked notes from engineers who’ve handled CVE-2025-25278 in production — separate from our analysis above.
The advisory tells you what broke. It rarely tells you what actually worked. If you’ve dealt with this one, that detail is what the next engineer is searching for.
- The version that genuinely resolved it — not the one the vendor claimed
- A config change or rule that shut the vector down
- A gotcha in the upgrade path that cost you an afternoon
No notes yet
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- Verified mitigations, workarounds, and config changes
- Version or environment caveats, and links to real fixes
- No weaponised exploit code, or anything meant to cause harm
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