CVE-2025-43980

MEDIUM

6.5

CVSS Score

Published: August 5, 2025 at 12:00 AM UTC

Updated: June 17, 2026 at 09:24 AM UTC

1 product affected across 1 vendorFIRSTNUM JC21A-04

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Severity

MEDIUM6.5

Exploit prediction

EPSS 0.2%

SSVC

No known exploit

Description

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.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

FIRSTNUM JC21A-04 · Firstnum

90%

v ≤ 2.01ME/FN

Remediation

No guide yet

No remediation guidance has been written for this CVE yet, and no fixed version or vendor advisory is recorded against it.

References (2)

Source: [email protected]

https://github.com/actuator/cve/blob/main/Firstnum/CVE-2025-43980.txt

Source: [email protected]

https://github.com/actuator/cve/tree/main/Firstnum

SSVC — Action Prioritization

SSVCNo known exploitNot automatableTotal impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

6.5MEDIUMCISA-ADP

Attack Vector: NETWORK
Complexity: LOW
Privileges: NONE
User Interaction: NONE
Scope: UNCHANGED
Confidentiality: NONE
Integrity: LOW
Availability: LOW

Vector?

Quick Info

StatusDEFERRED

CWE

CWE-284

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