VulnerabilityPublished 14 Aug 2025Updated 15 Aug 2025

CVE-2025-43983: Missing Authentication

Source CVE Database V5

Not known to be exploited · CVSS 9.1 Critical.

Data as of 26 Oct 2026, 12:55 UTC

CVSS 3.1 base score

9.1Critical

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

EPSS: 0.3% chance of exploitation in 30 days – higher than 33% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.

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

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

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

Attack Vector: Network: The vulnerable component is bound to the network stack and the set of possible attackers extends beyond the other options listed, up to and including the entire Internet. Such a vulnerability is often termed 'remotely exploitable' and can be thought of as an attack being exploitable at the protocol level one or more network hops away (e.g., across one or more routers).
Attack Complexity: Low: Specialized access conditions or extenuating circumstances do not exist. An attacker can expect repeatable success against the vulnerable component.
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: High: There is a total loss of integrity, or a complete loss of protection. For example, the attacker is able to modify any/all files protected by the impacted component. Alternatively, only some files can be modified, but malicious modification would present a direct, serious consequence to 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 14 Aug 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

AI-suggested

Network Segmentation: Immediately isolate KuWFi CPF908-CP5 devices from untrusted networks, including the internet, to limit exposure. Place devices behind firewalls that restrict access to the vulnerable endpoints.
Access Control: Implement strict network access controls allowing only trusted management hosts to communicate with these devices.
Monitoring and Logging: Enable detailed logging on network devices and monitor for unusual traffic patterns targeting goform endpoints or unexpected SMS sending activity.
Credential Rotation: Change default and existing administrator credentials on all affected devices to strong, unique passwords to reduce risk if credentials are leaked.
Disable SMS Features: If possible, disable SMS sending capabilities on the device until a patch is available to prevent abuse.
Vendor Engagement: Engage with KuWFi or device suppliers to obtain patches or firmware updates addressing the vulnerability.
Incident Response Preparedness: Prepare incident response plans specific to exploitation scenarios involving these devices, including rapid isolation and forensic analysis.
Alternative Solutions: Consider replacing vulnerable devices with more secure alternatives if patching is delayed or unavailable. These steps go beyond generic advice by focusing on network-level controls, operational monitoring, and vendor coordination tailored to the specific device and vulnerability.

Description

KuWFi CPF908-CP5 WEB5.0_LCD_20210125 devices have multiple unauthenticated access control vulnerabilities within goform/goform_set_cmd_process and goform/goform_get_cmd_process. These allow an unauthenticated attacker to retrieve sensitive information (including the device admin username and password), modify critical device settings, and send arbitrary SMS messages.

Impact

For European organizations, the impact of CVE-2025-43983 could be severe, especially for those relying on KuWFi CPF908-CP5 devices in their network infrastructure. The ability to retrieve admin credentials compromises device confidentiality and can lead to full device takeover. Unauthorized modification of device settings can disrupt network operations, degrade security posture, or create persistent backdoors. The capability to send arbitrary SMS messages could be exploited to conduct social engineering attacks, fraud, or spam campaigns, potentially damaging organizational reputation and incurring regulatory penalties under GDPR if personal data is involved. Industrial, governmental, or critical infrastructure entities using these devices may face operational disruptions or espionage risks. The unauthenticated nature of the vulnerability means attackers do not need prior access or credentials, increasing the likelihood of exploitation. Given the lack of patches, organizations face an urgent need to implement compensating controls to mitigate exposure.

CWE-306Missing Authentication for Critical Function (opens in a new tab)
Base weaknessLikelihood of exploit: HighCWE Top 25 (2025): #21OWASP Top 10 A07:2025: Authentication Failures (opens in a new tab)
The product does not perform any authentication for functionality that requires a provable user identity or consumes a significant amount of resources.
Architecture and Design
Divide the software into anonymous, normal, privileged, and administrative areas. Identify which of these areas require a proven user identity, and use a centralized authentication capability.
Architecture and Design
For any security checks that are performed on the client side, ensure that these checks are duplicated on the server side, in order to avoid CWE-602. Attackers can bypass the client-side checks by modifying values after the checks have been performed, or by changing the client to remove the client-side checks…
Architecture and Design
Where possible, avoid implementing custom, "grow-your-own" authentication routines and consider using authentication capabilities as provided by the surrounding framework, operating system, or environment.
OWASP Cheat Sheets
OWASP Authentication (opens in a new tab)
OWASP ASVS 4.0.3
V1.2.3 (opens in a new tab)
V1.2.2 (opens in a new tab)
V1.2.4 (opens in a new tab)
Attack patterns
Choosing Message Identifier (opens in a new tab)
Force the System to Reset Values (opens in a new tab)
Using Unpublished Interfaces or Functionality (opens in a new tab)
Cross Site Request Forgery (opens in a new tab)
Communication Channel Manipulation (opens in a new tab)
From MITRE CWE, MITRE CAPEC and OWASP (Top 10, OpenCRE).

References

Community reviews

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Exploitation evidence

What to do

Description

AI analysisMachine-generated, updated 22 Aug 2025, 01:10 UTC

WeaknessesCWE-306

Technical details

References

Community reviews

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