What is the CVSS score of CVE-2020-1840?

CVE-2020-1840 has a CVSS 3.1 base score of 6.0 (Medium). CVSS vector: CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:N/A:H. EPSS exploitation probability: 0.2%.

Mate 20 Firmware CVE-2020-1840

MEDIUM

Improper Authentication (CWE-287)

2020-01-21 psirt@huawei.com

Authentication Bypass Huawei Mate 20 Firmware

6.0

CVSS 3.1 · NVD

View

Vulnerability Assessment

Weakness	CWE CWE-287 OWASP Top 10:2025 A07:2025 - Authentication Failures ASVS 5.0 V6 - Authentication Authentication mechanism validation MITRE ATT&CK 2 techniques across 2 tactics: Defense Evasion, Initial Access The technique list with ATT&CK links and the kill-chain view is part of the Basic plan and up. Sign in to read
Impact	CVSS score of 6.0 (MEDIUM). Attack characteristics: local attack vector, low complexity, high privileges required, no user interaction not required.
Exploit ScenarioDerived	A local attacker with access to the system could bypass authentication mechanisms to gain unauthorized access.

This Month Plan within 30 days. Why: MEDIUM severity (CVSS 4.0-6.9).

No patch listed yet 0.2% exploitation probability (EPSS)

Get an e-mail when this CVE is exploited, patched or re-scored. Free account.

Alert me

AnalysisAI

HUAWEI Mate 20 smart phones with versions earlier than 10.0.0.175(C00E70R3P8) have an insufficient authentication vulnerability. Rated medium severity (CVSS 6.0), this vulnerability is low attack complexity. No vendor patch available.

RemediationAI

No vendor patch is available at time of analysis. Monitor vendor advisories for updates. Implement multi-factor authentication, enforce strong password policies, use proven authentication frameworks.

Affects your stack

Find out whether the stacks and servers you run are on an affected version.

Checking this CVE against your own stacks and servers is part of the Basic plan and up.

Technical ContextAI · show details

This vulnerability is classified as Improper Authentication (CWE-287), which allows attackers to bypass authentication mechanisms to gain unauthorized access. HUAWEI Mate 20 smart phones with versions earlier than 10.0.0.175(C00E70R3P8) have an insufficient authentication vulnerability. A local attacker with high privilege can execute a specific command to exploit this vulnerability. Successful exploitation may cause information leak and compromise the availability of the smart phones.Affected product versions include: HUAWEI Mate 20 versions Versions earlier than 10.0.0.175(C00E70R3P8) Affected products include: Huawei Mate 20 Firmware.

Severity by source

NVD PRIMARY 6.0 MEDIUM

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

Primary rating from NVD · only source for this CVE.

CVSS VectorNVD

Attack Vector

Local

Attack Complexity

Low

Privileges Required

High

User Interaction

None

Scope

Unchanged

Confidentiality

High

Integrity

None

Availability

High

DescriptionNVD

HUAWEI Mate 20 smart phones with versions earlier than 10.0.0.175(C00E70R3P8) have an insufficient authentication vulnerability. A local attacker with high privilege can execute a specific command to exploit this vulnerability. Successful exploitation may cause information leak and compromise the availability of the smart phones.Affected product versions include: HUAWEI Mate 20 versions Versions earlier than 10.0.0.175(C00E70R3P8)

Threat Intelligence Overview

EPSS Score

0.2%

Top 87% exploitable

Data Quality

2 sources

Confidence: Low

NVD

CVE.org

EPSS

How this decision was reached

The engine reads each signal below and applies a fixed list of rules from top to bottom. The first rule that matches sets the recommended action – like a statement, every line is shown.

SignalValue

Severity MEDIUM

CISA KEV No

Public POC No

EPSS 0.2%

Patch available No

Active threat No

Deciding rule

MEDIUM severity (CVSS 4.0-6.9)

What every action level means

Emergency Immediate action required. Criteria: CRITICAL + in CISA KEV (actively exploited) without patch, OR CRITICAL + EPSS > 30% without patch, OR CRITICAL + active threat signals without patch.

Act Now Prioritize within 24-48h. Criteria: in KEV with patch available, OR CRITICAL + public POC, OR HIGH + EPSS > 10%, OR CRITICAL + active threat, OR any CRITICAL severity.

This Week Schedule remediation this week. Criteria: HIGH severity (CVSS 7.0-8.9). Patch within normal change window.

This Month Plan within 30 days. Criteria: MEDIUM severity (CVSS 4.0-6.9), lower exploitation probability. Include in regular patch cycle.

Monitor Track and reassess. Criteria: LOW severity (CVSS 0.1-3.9), minimal exploitation risk. No immediate action needed.

SSVC AssessmentENISA

SSVC Decision· derived

Defer

Exploitation· derived

None

System Exposure· derived

Small

Automatable· derived

Human Impact· derived

Medium

Priority Score

Low Medium High Critical

KEV: 0

EPSS: 0

CVSS: +30

PoC: 0

Weaponized: 0

Threat intel: 0

Gov advisory: 0

Attack Technique

Authentication Bypass CRITICAL

Authentication bypass attacks exploit flaws in the verification mechanisms that control access to systems and applications.

Affected Products (CPE)NVD

cpe:2.3:o:huawei:mate_20_firmware:*:*:*:*:*:*:*:*

More in Mate 20 Firmware

View all

CVE-2020-0022 HIGH This Week POC

8.8 Feb 13

In reassemble_and_dispatch of packet_fragmenter.cc, there is possible out of bounds write due to an incorrect bounds cal

CVE-2019-9506 HIGH This Week

8.1 Aug 14

The Bluetooth BR/EDR specification up to and including version 5.1 permits sufficiently low encryption key length and do

CVE-2020-9113 HIGH This Week

8.0 Oct 19

HUAWEI Mate 20 versions earlier than 10.0.0.188(C00E74R3P8) have a buffer overflow vulnerability in the Bluetooth module

CVE-2020-9247 HIGH This Week

7.8 Dec 07

There is a buffer overflow vulnerability in several Huawei products. Rated high severity (CVSS 7.8), this vulnerability

CVE-2019-5225 HIGH This Week

7.8 Nov 29

P30, Mate 20, P30 Pro smartphones with software of versions earlier than ELLE-AL00B 9.1.0.193(C00E190R1P21), versions ea

CVE-2020-9244 MEDIUM This Month

6.8 Aug 11

HUAWEI Mate 20 versions Versions earlier than 10.1.0.160(C00E160R3P8);HUAWEI Mate 20 Pro versions Versions earlier than

CVE-2020-1796 MEDIUM This Month

6.6 Mar 20

There is an improper authorization vulnerability in several smartphones. Rated medium severity (CVSS 6.6), this vulnerab

CVE-2020-1787 MEDIUM This Month

6.6 Jan 09

HUAWEI Mate 20 smartphones versions earlier than 9.1.0.139(C00E133R3P1) have an improper authentication vulnerability. R

CVE-2019-5251 MEDIUM This Month

5.5 Dec 13

There is a path traversal vulnerability in several Huawei smartphones. Rated medium severity (CVSS 5.5), this vulnerabil

CVE-2019-5227 MEDIUM This Month

5.5 Nov 29

P30, P30 Pro, Mate 20 smartphones with software of versions earlier than ELLE-AL00B 9.1.0.193(C00E190R2P1), versions ear

CVE-2019-5226 MEDIUM This Month

5.5 Nov 29

P30, P30 Pro, Mate 20 smartphones with software of versions earlier than ELLE-AL00B 9.1.0.193(C00E190R2P1), versions ear

CVE-2018-7956 MEDIUM This Month

5.3 Dec 04

Huawei VIP App is a mobile app for Malaysia customers that purchased P20 Series, Nova 3/3i and Mate 20. Rated medium sev

Same weakness CWE-287 – Improper Authentication

View all

CVE-2022-40684 CRITICAL POC

9.8

CVE-2025-61882 CRITICAL POC

9.8

CVE-2020-0688 HIGH POC

8.8

CVE-2023-46805 HIGH POC

8.2

CVE-2023-35078 CRITICAL POC

9.8

CVE-2015-1187 CRITICAL POC

9.8

CVE-2024-7593 CRITICAL POC

9.8

CVE-2017-7921 CRITICAL POC

9.8

Same technique Authentication Bypass

View all

CVE-2015-3306 CRITICAL POC

10.0

CVE-2023-22515 CRITICAL POC

9.8

CVE-2012-4681 CRITICAL POC

9.8

CVE-2013-2465 CRITICAL POC

9.8

CVE-2011-3544 CRITICAL POC

9.8

CVE-2024-0012 CRITICAL POC

9.3

References

Advisories & patches

ADVISORY https://www.huawei.com/en/psirt/security-advisories/huawei-sa-20200115-01-smartphone-en

Search Externally

GitHub PoC

Exploit-DB PacketStorm Snyk Rapid7 Nuclei Templates Trickest PoC

Back