CVE-2025-43980

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...

CVE-2025-43979

An issue was discovered on FIRSTNUM JC21A-04 devices through 2.01ME/FN that allows authenticated attackers to execute arbitrary OS system commands with root privileges via crafted payloads to the xmlaction.cgi?method= endpoint...

CVE-2025-43979

An issue was discovered on FIRSTNUM JC21A-04 devices through 2.01ME/FN that allows authenticated attackers to execute arbitrary OS system commands with root privileges via crafted payloads to the xmlaction.cgi?method= endpoint...

CVE-2025-43979

An issue was discovered on FIRSTNUM JC21A-04 devices through 2.01ME/FN that allows authenticated attackers to execute arbitrary OS system commands with root privileges via crafted payloads to the xmlaction.cgi?method= endpoint...

PT-2025-31941 · Firstnum · Firstnum Jc21A-04

Name of the Vulnerable Software and Affected Versions: FIRSTNUM JC21A-04 devices versions through 2.01ME/FN Description: An issue allows authenticated attackers to execute arbitrary OS system commands with root privileges via crafted payloads to the xml action.cgi?method= endpoint. Recommendation...

FIRSTNUM JC21A-04 安全漏洞

The FIRSTNUM JC21A-04 is a router from the Chinese company FIRSTNUM. A security vulnerability exists in the FIRSTNUM JC21A-04 version 2.01ME/FN and earlier, which originates from an arbitrary system command that can be executed via the xmlaction.cgi endpoint...

CVE-2025-43980: Improper Access Control

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...

PT-2025-31947 · Firstnum · Firstnum Jc21A-04

Name of the Vulnerable Software and Affected Versions: FIRSTNUM JC21A-04 devices versions through 2.01ME/FN Description: FIRSTNUM JC21A-04 devices enable the SSH service by default with the credentials root/admin. The graphical user interface GUI does not provide a method to disable this account...

CVE-2025-43980

The FIRSTNUM JC21A-04 router, in versions through 2.01ME/FN , contains a vulnerability where the SSH service is enabled by default using the default credentials of root/admin . The device's graphical user interface (GUI) lacks an option to disable this account. Practical consequences include unau...

CVE-2025-43979: Improper Neutralization of Special Elements used in an OS Command

An issue was discovered on FIRSTNUM JC21A-04 devices through 2.01ME/FN that allows authenticated attackers to execute arbitrary OS system commands with root privileges via crafted payloads to the xmlaction.cgi?method= endpoint...

CVE-2025-43980

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...

CVE-2025-43979

The FIRSTNUM JC21A-04 router (versions through 2.01ME/FN ) is vulnerable to an OS command injection flaw. An authenticated attacker can execute arbitrary OS system commands with root privileges by sending crafted payloads to the xml_action.cgi?method= endpoint. To mitigate this risk, it is recomm...