FIRSTNUM JC21A-04 up to 2.01ME-FN SSH Service default credentials

CVSS Meta Temp Score
CVSS is a standardized scoring system to determine possibilities of attacks. The Temp Score considers temporal factors like disclosure, exploit and countermeasures. The unique Meta Score calculates the average score of different sources to provide a normalized scoring system.
Current Exploit Price (≈)
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CTI Interest Score
Our Cyber Threat Intelligence team is monitoring different web sites, mailing lists, exploit markets and social media networks. The CTI Interest Score identifies the interest of attackers and the security community for this specific vulnerability in real-time. A high score indicates an elevated risk to be targeted for this vulnerability.
8.8$0-$5k0.00

Summaryinfo

A vulnerability was found in FIRSTNUM JC21A-04 up to 2.01ME-FN. It has been rated as very critical. This affects an unknown function of the component SSH Service. Performing a manipulation results in default credentials. This vulnerability was named CVE-2025-43980. There is no available exploit.

Detailsinfo

A vulnerability classified as very critical has been found in FIRSTNUM JC21A-04 up to 2.01ME-FN. This affects an unknown function of the component SSH Service. The manipulation with an unknown input leads to a default credentials vulnerability. CWE is classifying the issue as CWE-1392. The product uses default credentials (such as passwords or cryptographic keys) for potentially critical functionality. This is going to have an impact on confidentiality, integrity, and availability. The summary by CVE is:

An issue was discovered on FIRSTNUM JC21A-04 devices through 2.01ME/FN. They enable the SSH service by default with the credentials of root/admin. The GUI doesn't offer a way to disable the account.

This vulnerability is uniquely identified as CVE-2025-43980 since 04/21/2025. The exploitability is told to be easy. No form of authentication is needed for exploitation. The technical details are unknown and an exploit is not publicly available. The pricing for an exploit might be around USD $0-$5k at the moment (estimation calculated on 08/05/2025).

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.

Productinfo

Vendor

Name

Version

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 8.8
VulDB Meta Temp Score: 8.8

VulDB Base Score: 8.8
VulDB Temp Score: 8.8
VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv2info

AVACAuCIA
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💳💳💳💳💳💳
💳💳💳💳💳💳
VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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VulDB Base Score: 🔒
VulDB Temp Score: 🔒
VulDB Reliability: 🔍

Exploitinginfo

Class: Default credentials
CWE: CWE-1392
CAPEC: 🔒
ATT&CK: 🔒

Physical: No
Local: No
Remote: Partially

Availability: 🔒
Status: Not defined

EPSS Score: 🔒
EPSS Percentile: 🔒

Price Prediction: 🔍
Current Price Estimation: 🔒

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Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: no mitigation known
Status: 🔍

0-Day Time: 🔒

Timelineinfo

04/21/2025 CVE reserved
08/05/2025 +106 days Advisory disclosed
08/05/2025 +0 days VulDB entry created
08/05/2025 +0 days VulDB entry last update

Sourcesinfo

Status: Not defined

CVE: CVE-2025-43980 (🔒)
GCVE (CVE): GCVE-0-2025-43980
GCVE (VulDB): GCVE-100-318843

Entryinfo

Created: 08/05/2025 19:46
Changes: 08/05/2025 19:46 (51)
Complete: 🔍
Cache ID: 216::103

Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.

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