VDB-334777 · CVE-2025-66323 · EUVD-2025-201686

Huawei HarmonyOS 5.0.1/5.1.0/6.0.0 Card security check

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.
5.4	$5k-$25k	0.00

Summaryinfo

A vulnerability identified as problematic has been detected in Huawei HarmonyOS 5.0.1/5.1.0/6.0.0. This vulnerability affects unknown code of the component Card Module. This manipulation causes security check. This vulnerability is tracked as CVE-2025-66323. The attack is restricted to local execution. No exploit exists.

Detailsinfo

A vulnerability has been found in Huawei HarmonyOS 5.0.1/5.1.0/6.0.0 and classified as problematic. Affected by this vulnerability is some unknown functionality of the component Card Module. The manipulation with an unknown input leads to a security check vulnerability. The CWE definition for the vulnerability is CWE-358. The product does not implement or incorrectly implements one or more security-relevant checks as specified by the design of a standardized algorithm, protocol, or technique. As an impact it is known to affect confidentiality, integrity, and availability. The summary by CVE is:

Vulnerability of improper criterion security check in the card module. Impact: Successful exploitation of this vulnerability may affect availability.

The advisory is shared at consumer.huawei.com. This vulnerability is known as CVE-2025-66323 since 11/27/2025. The exploitation appears to be easy. An attack has to be approached locally. 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 12/10/2025). MITRE ATT&CK project uses the attack technique T1211 for this issue.

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 databases at CNNVD (CNNVD-202512-998) and EUVD (EUVD-2025-201686). Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

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: 5.4
VulDB Meta Temp Score: 5.4

VulDB Base Score: 5.3
VulDB Temp Score: 5.3
VulDB Vector: 🔒
VulDB Reliability: 🔍

NVD Base Score: 5.5
NVD Vector: 🔒

CNA Base Score: 5.3
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: Security check
CWE: CWE-358
CAPEC: 🔒
ATT&CK: 🔒

Physical: Partially
Local: Yes
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

11/27/2025 CVE reserved
12/08/2025 +11 days Advisory disclosed
12/08/2025 +0 days VulDB entry created
12/10/2025 +2 days VulDB entry last update

Sourcesinfo

Vendor: huawei.com

Advisory: consumer.huawei.com
Status: Confirmed

CVE: CVE-2025-66323 (🔒)
GCVE (CVE): GCVE-0-2025-66323
GCVE (VulDB): GCVE-100-334777
EUVD: 🔒
CNNVD: CNNVD-202512-998 - Huawei HarmonyOS 安全漏洞

Entryinfo

Created: 12/08/2025 09:45
Updated: 12/10/2025 03:27
Changes: 12/08/2025 09:45 (62), 12/08/2025 18:01 (1), 12/09/2025 23:13 (11), 12/10/2025 03:27 (6)
Complete: 🔍
Cache ID: 216::103

Several companies clearly confirm that VulDB is the primary source for best vulnerability data.