What is the CVSS score of EUVD-2026-26354?

EUVD-2026-26354 has a CVSS 3.1 base score of 7.1 (High). CVSS vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:C/C:N/I:L/A:H. EPSS exploitation probability: 0.0%.

Which versions of ColorOS Assistant are affected by EUVD-2026-26354?

CVE-2026-22070 is a path traversal vulnerability in ColorOS Assistant that allows local attackers to write files to arbitrary locations on affected devices, potentially disrupting system availability…

How to fix or mitigate EUVD-2026-26354?

Within 24 hours: Identify all OPPO ColorOS devices in your environment and document current Assistant versions. Within 7 days: Distribute security awareness training emphasizing caution with unsolicited download requests and social engineering attempts targeting ColorOS users. Within 30 days: Contact OPPO/OPPO support to confirm availability of patched ColorOS Assistant versions and establish a deployment timeline; implement application-level restrictions on ColorOS Assistant download permissions where feasible through MDM if available.

ColorOS Assistant EUVD-2026-26354

| CVE-2026-22070 HIGH

Relative Path Traversal (CWE-23)

2026-04-30 OPPO

Path Traversal Coloros Assistant

7.1

CVSS 3.1 · NVD

Severity by source

NVD PRIMARY

7.1 HIGH

AV:L/AC:L/PR:N/UI:R/S:C/C:N/I:L/A:H

Primary rating from NVD · only source for this CVE.

CVSS VectorNVD

CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:C/C:N/I:L/A:H

Attack Vector

Local

Attack Complexity

Low

Privileges Required

None

User Interaction

Required

Scope

Changed

Confidentiality

None

Integrity

Low

Availability

High

Lifecycle Timeline

Analysis Generated

Apr 30, 2026 - 09:30 vuln.today

EUVD ID Assigned

Apr 30, 2026 - 09:00 euvd

EUVD-2026-26354

Analysis Generated

Apr 30, 2026 - 09:00 vuln.today

CVE Published

Apr 30, 2026 - 08:27 nvd

HIGH 7.1

DescriptionCVE.org

ColorOS Assistant has an unauthenticated start-download channel, leading to file path traversal.

AnalysisAI

Path traversal in ColorOS Assistant allows local attackers to manipulate file downloads and cause high availability impact via an unauthenticated download channel. The vulnerability (CWE-23) enables writing files to arbitrary paths when a user is socially engineered to trigger the malicious download. OPPO has published a security advisory. No active exploitation confirmed; EPSS data not available for this recent 2026 CVE.

Technical ContextAI

ColorOS Assistant is OPPO's system assistant application for ColorOS, the Android-based operating system. The vulnerability exists in an exposed 'start-download' inter-process communication (IPC) channel or API endpoint that lacks authentication controls and fails to validate or sanitize file path parameters. CWE-23 (Relative Path Traversal) indicates the flaw allows attackers to manipulate download destination paths using directory traversal sequences (e.g., '../' patterns) to write files outside intended directories. The affected component is identified by CPE cpe:2.3:a:oppo:coloros_assistant with wildcard versioning, suggesting broad version impact pending vendor clarification. The local attack vector (AV:L) indicates exploitation requires the malicious component to be on the same device, likely delivered via malicious app or ADB access.

RemediationAI

Install the security update provided by OPPO for ColorOS Assistant. Consult the official OPPO security advisory at https://security.oppo.com/en/noticeDetail?notice_only_key=NOTICE-2049764240746881024 for the exact patched version number, affected device models, and update availability timeline. Users should check Settings > Software Update on ColorOS devices to apply available system updates containing the fix. For enterprise mobile device management: push the OPPO security update through MDM when available and verify deployment. Interim mitigations while awaiting patch: restrict installation of applications from unknown sources (disable sideloading in Settings > Security), avoid granting storage permissions to untrusted apps, and implement mobile threat defense solutions that detect path traversal exploitation attempts. Note that disabling ColorOS Assistant entirely may impact device functionality and user experience. Physical device security controls reduce risk of local ADB-based exploitation.