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CVE-2021-40045

Quick assessment

Affected
Huawei EMUI
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

Huawei HarmonyOS是中国华为（Huawei）公司的一个操作系统。提供一个基于微内核的全场景分布式操作系统。 Huawei HarmonyOS存在安全漏洞，该漏洞源于Wearables recovery升级系统存在签名校验机制失效的漏洞。成功利用此漏洞可能导致机密性受影响。

AI Predicted 7.5 Difficulty: Easy EPSS 0.15% · P5

Possible ATT&CK Techniques 1 AI

T1190 · Exploit Public-Facing Application
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I. Basic Information for CVE-2021-40045

Vulnerability Information
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Vulnerability Title
N/A
Source: CVE Program / CVE List V5
Vulnerability Description
There is a vulnerability of signature verification mechanism failure in system upgrade through recovery mode.Successful exploitation of this vulnerability may affect service confidentiality.
Source: CVE Program / CVE List V5
CVSS Information
N/A
Source: CVE Program / CVE List V5
Vulnerability Type
N/A
Source: CVE Program / CVE List V5
Vulnerability Title
Huawei HarmonyOS 数据伪造问题漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Huawei HarmonyOS是中国华为（Huawei）公司的一个操作系统。提供一个基于微内核的全场景分布式操作系统。 Huawei HarmonyOS存在安全漏洞，该漏洞源于Wearables recovery升级系统存在签名校验机制失效的漏洞。成功利用此漏洞可能导致机密性受影响。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
Huawei EMUI 2.0 -
Huawei Magic UI 12.0.0 -
Huawei HarmonyOS 4.0.0 -

II. Public POCs for CVE-2021-40045

# POC Description Source Link Shenlong Link
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III. Intelligence Information for CVE-2021-40045

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Vendor Advisories for CVE-2021-40045 (1)

Other References for CVE-2021-40045 (1)

Same Patch Batch · Huawei · 2022-02-09 · 11 CVEs total

CVE-2021-39991 Huawei EMUI 安全漏洞
CVE-2021-39986 HUAWEI EMUI 安全漏洞
CVE-2021-37115 HUAWEI EMUI 安全漏洞
CVE-2021-37109 HUAWEI EMUI 安全漏洞
CVE-2021-37107 HUAWEI EMUI 缓冲区错误漏洞
CVE-2021-39992 HUAWEI EMUI 安全漏洞
CVE-2021-39994 Huawei EMUI 安全漏洞
CVE-2021-39997 Huawei Emui 缓冲区错误漏洞
CVE-2021-40044 Huawei EMUI 安全漏洞
CVE-2021-40015 Huawei HarmonyOS 竞争条件问题漏洞

IV. Related Vulnerabilities

Same product: EMUI
Same vendor: Huawei

V. Comments for CVE-2021-40045

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