What is the CVSS score of CVE-2025-48906?

CVE-2025-48906 has a CVSS 3.1 base score of 8.8 (High). CVSS vector: CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H. EPSS exploitation probability: 0.0%.

Which versions of Harmonyos are affected by CVE-2025-48906?

An authentication bypass vulnerability in the DSoftBus module poses a HIGH risk to system availability with a CVSS score of 8.8.

How to fix or mitigate CVE-2025-48906?

Within 24 hours: Identify and inventory all systems running DSoftBus module; restrict network access to DSoftBus services to trusted internal networks only. Within 7 days: Deploy compensating controls including WAF rules to block suspicious authentication attempts and implement enhanced logging/monitoring for DSoftBus authentication events. Within 30 days: Evaluate disabling DSoftBus if non-critical, contact vendor for patch timeline, and develop incident response procedures specific to this vulnerability.

Harmonyos CVE-2025-48906

EUVD-2025-17085 HIGH

Authentication Bypass by Spoofing (CWE-290)

2025-06-06 psirt@huawei.com

Authentication Bypass Denial Of Service Harmonyos

8.8

CVSS 3.1 · NVD

Severity by source

NVD PRIMARY

8.8 HIGH

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

Primary rating from NVD · only source for this CVE.

CVSS VectorNVD

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

Attack Vector

Adjacent

Attack Complexity

Low

Privileges Required

None

User Interaction

None

Scope

Unchanged

Confidentiality

High

Integrity

High

Availability

High

Lifecycle Timeline

EUVD ID Assigned

Mar 14, 2026 - 18:10 euvd

EUVD-2025-17085

Analysis Generated

Mar 14, 2026 - 18:10 vuln.today

CVE Published

Jun 06, 2025 - 07:15 nvd

HIGH 8.8

DescriptionCVE.org

Authentication bypass vulnerability in the DSoftBus module Impact: Successful exploitation of this vulnerability may affect availability.

AnalysisAI

CVE-2025-48906 is an authentication bypass vulnerability in the DSoftBus module that allows unauthenticated attackers on the local network to completely compromise system confidentiality, integrity, and availability without user interaction. The vulnerability affects DSoftBus implementations across multiple platforms with a CVSS score of 8.8, indicating critical severity with high exploitability potential on adjacent networks.

Technical ContextAI

DSoftBus is a distributed soft bus communication module used for inter-process communication and service discovery in various operating systems and IoT platforms. The vulnerability root cause is classified under CWE-290 (Authentication Using a Broken or Risky Cryptographic Algorithm), indicating the authentication mechanism either uses insufficient cryptographic protections, lacks proper validation, or can be circumvented through cryptographic weaknesses. The adjacent network attack vector (AV:A) suggests the flaw exists in network-based authentication handshakes or credential validation during service discovery or RPC mechanisms within DSoftBus. The low attack complexity (AC:L) and no privilege requirement (PR:N) indicate this is a fundamental design flaw rather than edge-case exploitation requiring specific conditions.

RemediationAI

Immediate actions: (1) Isolate DSoftBus-enabled devices from untrusted network segments; implement strict network segmentation and firewall rules limiting DSoftBus traffic to authorized hosts only; (2) Monitor for vendor security advisories from OpenHarmony, Huawei, and device manufacturers for patched versions; (3) Patch to latest DSoftBus versions once vendors release security updates addressing CWE-290 (expected to implement cryptographically sound authentication, mutual authentication, or capability-based authorization); (4) Temporary workarounds include disabling DSoftBus if not essential, restricting network access via iptables/firewall rules to trusted peers, or implementing application-level authentication overlays. Vendor patch links and specific version updates must be obtained from official OpenHarmony security advisories and device manufacturer security bulletins.