CVE-2026-22070
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 · uneditedColorOS Assistant has an unauthenticated start-download channel, leading to file path traversal.
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 · high confidenceColorOS Assistant contains an unauthenticated start-download function that fails to properly validate file path inputs, allowing remote attackers to use directory traversal sequences (e.g., ../../) to access files outside the intended directory and read sensitive system files.
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= 1.4.26CVSS 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
- Network
- Complexity
- Low
- Privileges
- None
- User interaction
- None
- Scope
- Unchanged
- Confidentiality
- High
- Integrity
- High
- Availability
- High
CVSS:3.1/AV:N/AC:L/PR:N/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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Verify ColorOS Assistant is installedCheck the installed applications on the Oppo device for 'ColorOS Assistant' or 'ColorOS 助手'Affected if The application is present on the device and is version 1.4.26
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Confirm the installed versionAccess the app's version information through the device settings under Apps > ColorOS Assistant > Version, or check the APK version metadataAffected if The installed version is exactly 1.4.26
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Identify exposed download endpointInspect network traffic or examine the app's network configuration to locate the start-download function endpoint. This may require a network proxy or reviewing app documentationAffected if The download function endpoint is accessible without requiring authentication credentials
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Test for directory traversal accessibilitySend a crafted HTTP request to the download endpoint using path traversal sequences such as ../../ to attempt to access files outside the intended download directoryAffected if The application accepts and processes requests containing ../ sequences without rejecting them
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Review for exploitation indicatorsExamine application logs, network logs, or system audit logs for evidence of directory traversal requests targeting sensitive paths such as /data/, /system/, or /etc/Affected if Logs show requests with traversal sequences or unauthorized file access attempts
A user is affected if ColorOS Assistant version 1.4.26 is installed and the unauthenticated download function is exposed, allowing path traversal attacks to read system files outside the intended directory.
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 dataImplement strict input validation and path sanitization on the download function to reject path traversal sequences, and add proper authentication/authorization checks to prevent unauthenticated access.
- Consultation3.0 h
- Implementation4.0 h
- Testing3.0 h
- Review / QA2.0 h
An estimate, not a bill — we confirm scope with you before any work starts. Need it this week? Rush from $3,408.
Scan for this in your stack
Free · runs locallyCheck whether your project pulls in CVE-2026-22070 — 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-2026-22070 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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