VDB-349125 · CVE-2026-28536 · EUVD-2026-9795

Huawei HarmonyOS 5.1.0/6.0.0 Device Authentication authentication bypass

CVSS Meta Temp Score CVSS is a standardized scoring system to determine possibilities of attacks. The Temp Score considers temporal factors like disclosure, exploit and countermeasures. The unique Meta Score calculates the average score of different sources to provide a normalized scoring system.	Current Exploit Price (≈) Our analysts are monitoring exploit markets and are in contact with vulnerability brokers. The range indicates the observed or calculated exploit price to be seen on exploit markets. A good indicator to understand the monetary effort required for and the popularity of an attack.	CTI Interest Score Our Cyber Threat Intelligence team is monitoring different web sites, mailing lists, exploit markets and social media networks. The CTI Interest Score identifies the interest of attackers and the security community for this specific vulnerability in real-time. A high score indicates an elevated risk to be targeted for this vulnerability.
8.8	$5k-$25k	0.00

Summaryinfo

A vulnerability was found in Huawei HarmonyOS 5.1.0/6.0.0. It has been rated as very critical. The impacted element is an unknown function of the component Device Authentication Module. Performing a manipulation results in authentication bypass. This vulnerability is known as CVE-2026-28536. Access to the local network is required for this attack. No exploit is available.

Detailsinfo

A vulnerability was found in Huawei HarmonyOS 5.1.0/6.0.0. It has been classified as very critical. This affects an unknown function of the component Device Authentication Module. The manipulation with an unknown input leads to a authentication bypass vulnerability. CWE is classifying the issue as CWE-305. The authentication algorithm is sound, but the implemented mechanism can be bypassed as the result of a separate weakness that is primary to the authentication error. This is going to have an impact on confidentiality, integrity, and availability. The summary by CVE is:

Authentication bypass vulnerability in the device authentication module. Impact: Successful exploitation of this vulnerability will affect integrity and confidentiality.

The advisory is shared at consumer.huawei.com. This vulnerability is uniquely identified as CVE-2026-28536 since 02/28/2026. The exploitability is told to be easy. The attack needs to approached within the local network. No form of authentication is needed for exploitation. Neither technical details nor an exploit are publicly available. The price for an exploit might be around USD $5k-$25k at the moment (estimation calculated on 03/07/2026).

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

The vulnerability is also documented in the vulnerability database at EUVD (EUVD-2026-9795). If you want to get the best quality for vulnerability data then you always have to consider VulDB.

Productinfo

Type

Smartphone Operating System

Vendor

Huawei

Name

HarmonyOS

Version

License

commercial

Website

Vendor: https://www.huawei.com/

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 8.8
VulDB Meta Temp Score: 8.8

VulDB Base Score: 8.8
VulDB Temp Score: 8.8
VulDB Vector: 🔒
VulDB Reliability: 🔍

NVD Base Score: 8.1
NVD Vector: 🔒

CNA Base Score: 9.6
CNA Vector (huawei): 🔒

CVSSv2info

AV	AC	Au	C	I	A
💳	💳	💳	💳	💳	💳
💳	💳	💳	💳	💳	💳
💳	💳	💳	💳	💳	💳

Vector	Complexity	Authentication	Confidentiality	Integrity	Availability
Unlock	Unlock	Unlock	Unlock	Unlock	Unlock
Unlock	Unlock	Unlock	Unlock	Unlock	Unlock
Unlock	Unlock	Unlock	Unlock	Unlock	Unlock

VulDB Base Score: 🔒
VulDB Temp Score: 🔒
VulDB Reliability: 🔍

Exploitinginfo

Class: Authentication bypass
CWE: CWE-305 / CWE-287
CAPEC: 🔒
ATT&CK: 🔒

Physical: No
Local: No
Remote: Partially

Availability: 🔒
Status: Not defined

EPSS Score: 🔒
EPSS Percentile: 🔒

Price Prediction: 🔍
Current Price Estimation: 🔒

0-Day	Unlock	Unlock	Unlock	Unlock
Today	Unlock	Unlock	Unlock	Unlock

Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: no mitigation known
Status: 🔍

0-Day Time: 🔒

Timelineinfo

02/28/2026 CVE reserved
03/05/2026 +5 days Advisory disclosed
03/05/2026 +0 days VulDB entry created
03/07/2026 +2 days VulDB entry last update

Sourcesinfo

Vendor: huawei.com

Advisory: consumer.huawei.com
Status: Confirmed

CVE: CVE-2026-28536 (🔒)
GCVE (CVE): GCVE-0-2026-28536
GCVE (VulDB): GCVE-100-349125
EUVD: 🔒

Entryinfo

Created: 03/05/2026 08:29
Updated: 03/07/2026 20:23
Changes: 03/05/2026 08:29 (62), 03/05/2026 10:18 (1), 03/07/2026 20:23 (12)
Complete: 🔍
Cache ID: 216::103

If you want to get the best quality for vulnerability data then you always have to consider VulDB.