#VU105108 Authentication bypass using an alternate path or channel in Century Systems products - CVE-2025-24846

Vulnerability identifier: #VU105108

Vulnerability risk: High

CVSSv4.0: 6.6 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N/E:U/U:Amber]

CVE-ID: CVE-2025-24846

CWE-ID: CWE-288

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
FutureNet AS-250/S
Hardware solutions / Routers & switches, VoIP, GSM, etc
FutureNet AS-250/F-SC
Hardware solutions / Routers & switches, VoIP, GSM, etc
FutureNet AS-250/F-KO
Hardware solutions / Routers & switches, VoIP, GSM, etc
FutureNet AS-250/NL
Hardware solutions / Routers & switches, VoIP, GSM, etc
FutureNet AS-250/KL
Hardware solutions / Routers & switches, VoIP, GSM, etc
FutureNet AS-250/KL Rev2
Hardware solutions / Routers & switches, VoIP, GSM, etc
FutureNet AS-250/L
Hardware solutions / Routers & switches, VoIP, GSM, etc
FutureNet AS-M250/L
Hardware solutions / Routers & switches, VoIP, GSM, etc
FutureNet AS-M250/KL
Hardware solutions / Routers & switches, VoIP, GSM, etc
FutureNet AS-M250/NL
Hardware solutions / Routers & switches, VoIP, GSM, etc
FutureNet AS-P250/NL
Hardware solutions / Routers & switches, VoIP, GSM, etc
FutureNet AS-P250/KL
Hardware solutions / Routers & switches, VoIP, GSM, etc
FutureNet AS-210/U4
Hardware solutions / Routers & switches, VoIP, GSM, etc

Vendor: Century Systems

Description

The vulnerability allows a remote attacker to bypass authentication process.

The vulnerability exists due to the authentication bypass using an alternate path or channel. A remote attacker can send a specially crafted request and obtain the device information such as MAC address.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

FutureNet AS-250/S: 1.14.0

FutureNet AS-250/F-SC: 1.14.0

FutureNet AS-250/F-KO: 1.14.0

FutureNet AS-250/NL: 1.14.0

FutureNet AS-250/KL: 1.14.0

FutureNet AS-250/KL Rev2: 2.6.4

FutureNet AS-250/L: 2.6.4

FutureNet AS-M250/L: 2.6.4

FutureNet AS-M250/KL: 2.6.4

FutureNet AS-M250/NL: 2.6.4

FutureNet AS-P250/NL: 2.6.4

FutureNet AS-P250/KL: 2.6.4

FutureNet AS-210/U4: 2.6.4

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External links
https://jvn.jp/en/vu/JVNVU96398949/index.html
https://www.centurysys.co.jp/backnumber/common/jvnvu96398949.html

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Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.