VulnerabilityPublished 28 Nov 2025

CVE-2025-64311: Huawei HarmonyOS · Information Exposure

Affects Huawei HarmonyOSSource CVE Database V5

Not known to be exploited · CVSS 5.1 Medium.

Data as of 26 Oct 2026, 14:05 UTC

CVSS 3.1 base score

5.1Medium

How severe the flaw is on the 0–10 CVSS scale.

EPSS: 0.08% chance of exploitation in 30 days – higher than 0% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.

CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N

Attack Vector: Local
Attack Complexity: High
Privileges Required: None
User Interaction: None
Scope: Unchanged
Confidentiality: High
Integrity: None
Availability: None

Bold values are the worst case: easiest to exploit or largest impact.

Attack Vector: Local: The vulnerable component is not bound to the network stack and the attacker’s path is via read/write/execute capabilities. Either: the attacker exploits the vulnerability by accessing the target system locally (e.g., keyboard, console), or remotely (e.g., SSH); or the attacker relies on User Interaction by another person to perform actions required to exploit the vulnerability (e.g., tricking a legitimate user into opening a malicious document).
Attack Complexity: High: A successful attack depends on conditions beyond the attacker's control. That is, a successful attack cannot be accomplished at will, but requires the attacker to invest in some measurable amount of effort in preparation or execution against the vulnerable component before a successful attack can be expected. For example, a successful attack may require an attacker to: gather knowledge about the environment in which the vulnerable target/component exists; prepare the target environment to improve exploit reliability; or inject themselves into the logical network path between the target and the resource requested by the victim in order to read and/or modify network communications (e.g., a man in the middle attack).
Privileges Required: None: The attacker is unauthorized prior to attack, and therefore does not require any access to settings or files to carry out an attack.
User Interaction: None: The vulnerable system can be exploited without any interaction from any user.
Scope: Unchanged: An exploited vulnerability can only affect resources managed by the same security authority. In this case, the vulnerable component and the impacted component are either the same, or both are managed by the same security authority.
Confidentiality: High: There is total loss of confidentiality, resulting in all resources within the impacted component being divulged to the attacker. Alternatively, access to only some restricted information is obtained, but the disclosed information presents a direct, serious impact.
Integrity: None: There is no loss of integrity within the impacted component.
Availability: None: There is no impact to availability within the impacted component.

Definitions: FIRST CVSS v3.1 specification.

Exploitation evidence

Disclosed: evidence found.
CVE published 28 Nov 2025
Detectable: no evidence on record.
No public nuclei template indexed
Weaponised: no evidence on record.
No public exploit code indexed in Metasploit or Exploit-DB
Exploited in the wildExploited: no evidence on record.
Not in CISA KEV and no source reports exploitation
Observed by OffSeq MirageSeen by Mirage: no evidence on record.
No attack traffic recorded by OffSeq Mirage sensors

A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 26 Oct 2026.

Disclosed: The CVE record is public on cve.org. Its publication is t = 0.
Detectable: A public nuclei template can find exposed instances, for defenders and attackers alike.
Weaponised: Public exploit code exists in Metasploit or Exploit-DB, or CISA SSVC or the CVSS exploit maturity reports a public proof of concept.
Exploited in the wild: CISA KEV lists it, CISA SSVC rates exploitation active, or a source reports attacks.
Observed by OffSeq Mirage: OffSeq Mirage honeypot sensors recorded attack traffic for this CVE, or found exposed hosts without attack traffic.

Moments are spaced evenly, not to scale; a dashed line marks a gap of six months or more. Deltas count from t = 0. Sources that give only a date (CISA KEV, Exploit-DB, or a time of exactly 00:00Z) read “same day” rather than hours. Metasploit modules carry the flaw’s disclosure date, not their release date, and nuclei templates carry no date, so both appear above but not on the timeline.

What to do

Affected software

Product	Affected	Fixed in
Huawei HarmonyOS	Affected =5.1.0 =5.0.1 =6.0.0	Fixed in–

AI-suggested

Monitor Huawei’s official security advisories and apply patches promptly once they become available for the affected HarmonyOS versions.
Restrict physical and local access to Huawei devices running affected versions, especially in sensitive environments, to reduce the risk of exploitation.
Implement device management policies that enforce strong authentication and access controls to limit unauthorized local usage.
Conduct regular audits of device configurations and installed applications to detect unauthorized modifications or suspicious activity.
Educate users about the risks of local device compromise and encourage secure handling of devices containing sensitive information.
Where possible, isolate or limit the use of the Notepad module for storing highly sensitive data until patches are applied.
Employ endpoint detection and response (EDR) solutions capable of identifying anomalous local access patterns on Huawei devices.
Consider network segmentation and data encryption strategies to minimize the impact of potential data exposure from compromised devices.

Description

CVE-2025-64311 is a medium-severity permission control vulnerability in the Notepad module of Huawei HarmonyOS versions 5.0.1, 5.1.0, and 6.0.0. It allows unauthorized actors to access sensitive information without authentication or user interaction, impacting confidentiality but not integrity or availability. Exploitation requires local access with high attack complexity, limiting remote exploitation. No known exploits are currently in the wild.

Impact

For European organizations, the primary impact of CVE-2025-64311 is the unauthorized disclosure of sensitive information stored in the Notepad module on Huawei HarmonyOS devices. This could lead to data breaches involving personal, corporate, or intellectual property data, undermining confidentiality and potentially violating data protection regulations such as GDPR. The requirement for local access and high attack complexity reduces the likelihood of widespread exploitation but does not eliminate risks from insider threats or physical device compromise. Organizations relying on Huawei devices for mobile or IoT deployments may face increased risk, particularly in sectors handling sensitive or regulated data. The exposure could damage organizational reputation, lead to regulatory penalties, and facilitate further targeted attacks if sensitive information is leveraged by adversaries. However, the lack of impact on integrity and availability limits the scope of operational disruption.

CWE-200Exposure of Sensitive Information to an Unauthorized Actor (opens in a new tab)
Class weaknessLikelihood of exploit: HighCWE Top 25 (2025): #20OWASP Top 10 A01:2025: Broken Access Control (opens in a new tab)
The product exposes sensitive information to an actor that is not explicitly authorized to have access to that information.
MITRE discourages mapping vulnerabilities to this broad entry; the root cause is usually a more specific weakness.
Architecture and Design · Separation of Privilege
Compartmentalize the system to have "safe" areas where trust boundaries can be unambiguously drawn. Do not allow sensitive data to go outside of the trust boundary and always be careful when interfacing with a compartment outside of the safe area.
OWASP Cheat Sheets
Error Handling (opens in a new tab)
Logging (opens in a new tab)
Authorization (opens in a new tab)
OWASP ASVS 4.0.3
V8.3.4 (opens in a new tab)
V14.3.3 (opens in a new tab)
V7.3.3 (opens in a new tab)
Attack patterns
Subverting Environment Variable Values (opens in a new tab)
ICMP Echo Request Ping (opens in a new tab)
TCP SYN Scan (opens in a new tab)
Enumerate Mail Exchange (MX) Records (opens in a new tab)
DNS Zone Transfers (opens in a new tab)
From MITRE CWE, MITRE CAPEC and OWASP (Top 10, OpenCRE).

References

consumer.huawei.com/en/support/bulletin/2025/11/ (opens in a new tab)

Community reviews

Loading reviews…

Exploitation evidence

What to do

Affected software

Description

AI analysisMachine-generated, updated 5 Dec 2025, 04:33 UTC

WeaknessesCWE-200

Technical details

References

Community reviews

Related threats