What is the CVSS score of CVE-2026-28542?

CVE-2026-28542 has a CVSS 3.1 base score of 7.3 (High). CVSS vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:L/A:L. EPSS exploitation probability: 0.0%.

How to fix or mitigate CVE-2026-28542?

Within 24 hours: Inventory all systems running vulnerable service framework versions and isolate high-risk instances from production networks if possible. Within 7 days: Implement network segmentation to restrict access to affected services and enforce strong authentication mechanisms; coordinate with the vendor for patch timelines. Within 30 days: Deploy comprehensive monitoring and logging for permission-related events; establish a prioritized patching schedule and communicate remediation timeline to stakeholders.

Emui CVE-2026-28542

HIGH

Improper Handling of Exceptional Conditions (CWE-755)

2026-03-05 psirt@huawei.com

Authentication Bypass Emui Harmonyos Huawei

7.3

CVSS 3.1 · NVD

View

Attack ChainAIDerived

Hypothetical attack flow derived from CVE metadata – not a confirmed exploit chain

Access

Local attacker gains system access
Exploit

Bypass permission checks in service framework
Execution

Escalate privileges
Impact

Access sensitive data and modify system state

Vulnerability Assessment

Weakness	CWE CWE-755 OWASP Top 10:2025 A10:2025 - Mishandling of Exceptional Conditions ASVS 5.0 V16 - Security Logging and Error Handling Exception handling procedures
Exploitation Conditions	Local access required on the target system. No authentication or user interaction needed. Vulnerability exploitable against default configurations of the system service framework with standard permission settings.
Impact	CVSS 7.3 (HIGH). Attack vector: Local. Complexity: Low. Privileges required: None. User interaction: None.
Exploit ScenarioDerived	An attacker could exploit this vulnerability to compromise the affected system.

This Week Schedule remediation this week. Why: HIGH severity (CVSS 7.0-8.9).

No patch listed yet 0.0% exploitation probability (EPSS)

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

Alert me

AnalysisAIv1 – Mar 12, 2026

Permission bypass vulnerability in the system service framework. Impact: Successful exploitation of this vulnerability may affect availability. [CVSS 7.3 HIGH]

RemediationAI

Monitor vendor advisories for a patch.

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

Classified as CWE-755 (Improper Handling of Exceptional Conditions). Affects the system component of Emui. Permission bypass vulnerability in the system service framework. Impact: Successful exploitation of this vulnerability may affect availability.

Know when Emui gets its next vulnerability

Watch products and get an email when something new is published
Check this CVE against your own stack and servers
Exploit and PoC references, threat intelligence from 22 sources

Continue with Google Continue with GitHub

No credit card · 7-day full trial

Severity by source

NVD PRIMARY 7.3 HIGH

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

Primary rating from NVD · only source for this CVE.

CVSS VectorNVD

Attack Vector

Local

Attack Complexity

Low

Privileges Required

None

User Interaction

None

Scope

Unchanged

Confidentiality

High

Integrity

Low

Availability

Low

DescriptionCVE.org

Permission bypass vulnerability in the system service framework. Impact: Successful exploitation of this vulnerability may affect availability.

Executive ViewAI

Why It Matters

A permission bypass vulnerability (CVE-2026-28542) has been identified in our system service framework that could allow unauthorized users to disrupt service availability. With no patch currently available and a CVSS score of 7.3, this requires immediate mitigation efforts to protect critical operations from potential exploitation.

Business Impact: High

Compensating Controls

Implement network segmentation to limit access to affected system services; enforce principle of least privilege through role-based access controls (RBAC); deploy Web Application Firewall (WAF) rules to block suspicious permission requests; disable non-essential service framework features if operationally feasible; increase monitoring and alerting on authentication/authorization failures; restrict administrative access to affected systems.

Threat Intelligence Overview

EPSS Score

0.0%

Top 100% exploitable

Data Quality

3 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 HIGH

CISA KEV No

Public POC No

EPSS 0.0%

Patch available No

Active threat No

Deciding rule

HIGH severity (CVSS 7.0-8.9)

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

Scheduled

Exploitation· derived

None

System Exposure· derived

Small

Automatable· derived

Human Impact

High

Priority Score

Low Medium High Critical

KEV: 0

EPSS: 0

CVSS: +36

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)CVE.org

cpe:2.3:o:huawei:emui:13.0.0:*:*:*:*:*:*:*

cpe:2.3:o:huawei:emui:14.0.0:*:*:*:*:*:*:*

cpe:2.3:o:huawei:emui:14.2.0:*:*:*:*:*:*:*

cpe:2.3:o:huawei:harmonyos:3.1.0:*:*:*:*:*:*:*

cpe:2.3:o:huawei:harmonyos:4.0.0:*:*:*:*:*:*:*

cpe:2.3:o:huawei:harmonyos:4.2.0:*:*:*:*:*:*:*

More in Emui

View all

CVE-2024-32991 CRITICAL Act Now

9.8 May 14

Permission verification vulnerability in the wpa_supplicant module Impact: Successful exploitation of this vulnerability

CVE-2023-46773 CRITICAL Act Now

9.8 Dec 06

Permission management vulnerability in the PMS module. Rated critical severity (CVSS 9.8), this vulnerability is remotel

CVE-2023-44116 CRITICAL Act Now

9.8 Oct 11

Vulnerability of access permissions not being strictly verified in the APPWidget module.Successful exploitation of this

CVE-2023-44105 CRITICAL Act Now

9.8 Oct 11

Vulnerability of permissions not being strictly verified in the window management module.Successful exploitation of this

CVE-2023-44106 CRITICAL Act Now

9.8 Oct 11

API permission management vulnerability in the Fwk-Display module.Successful exploitation of this vulnerability may caus

CVE-2023-41297 CRITICAL Act Now

9.8 Sep 25

Vulnerability of defects introduced in the design process in the HiviewTunner module. Rated critical severity (CVSS 9.8)

CVE-2023-39405 CRITICAL Act Now

9.8 Aug 13

Vulnerability of out-of-bounds parameter read/write in the Wi-Fi module. Rated critical severity (CVSS 9.8), this vulner

CVE-2023-37242 CRITICAL Act Now

9.8 Jul 06

Vulnerability of commands from the modem being intercepted in the atcmdserver module. Rated critical severity (CVSS 9.8)

CVE-2023-34159 CRITICAL Act Now

9.8 Jun 19

Improper permission control vulnerability in the Notepad app.Successful exploitation of the vulnerability may lead to pr

CVE-2022-46327 CRITICAL Act Now

9.8 Dec 20

Some smartphones have configuration issues. Rated critical severity (CVSS 9.8), this vulnerability is remotely exploitab

CVE-2022-46326 CRITICAL Act Now

9.8 Dec 20

Some smartphones have the out-of-bounds write vulnerability. Rated critical severity (CVSS 9.8), this vulnerability is r

CVE-2022-46325 CRITICAL Act Now

9.8 Dec 20

Some smartphones have the out-of-bounds write vulnerability.Successful exploitation of this vulnerability may cause syst

Same weakness CWE-755 – Improper Handling of Exceptional Conditions

View all

CVE-2017-5638 CRITICAL POC

9.8

CVE-2018-7852 HIGH POC

7.5

CVE-2022-48328 CRITICAL POC

9.8

CVE-2021-38384 CRITICAL POC

9.8

CVE-2021-36128 CRITICAL POC

9.8

CVE-2020-24753 CRITICAL POC

9.8

CVE-2019-14431 CRITICAL POC

9.8

CVE-2019-12815 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-2022-40684 CRITICAL POC

9.8

CVE-2025-61882 CRITICAL POC

9.8

CVE-2024-0012 CRITICAL POC

9.3

References

Advisories & patches

ADVISORY https://consumer.huawei.com/en/support/bulletin/2026/3/ ADVISORY https://consumer.huawei.com/en/support/bulletinwearables/2026/3/

Search Externally

GitHub PoC

Exploit-DB PacketStorm Snyk Rapid7 Nuclei Templates Trickest PoC

Back