CVE-2022-4221 — Improper Neutralization of Special Elements used in an OS Command ('OS Command I

Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection') vulnerability in Asus NAS-M25 allows an unauthenticated attacker to inject arbitrary OS commands via unsanitized cookie values.This issue affects NAS-M25: through 1.0.1.7.

01What is this vulnerability?

Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection') vulnerability in Asus NAS-M25 allows an unauthenticated attacker to inject arbitrary OS commands via unsanitized cookie values.This issue affects NAS-M25: through 1.0.1.7.

02Affected products

Vendor	Product	Versions
Asus	NAS	M25 — 0

03Active exploitation status

Not currently listed on the CISA Known Exploited Vulnerabilities (KEV) catalog. EPSS is the best forward-looking signal — see the EPSS row above.

04Recommended remediation

• Patch to a fixed version listed in the vendor advisory (see references below).
• Mitigate with WAF rules, network egress filters, or feature flags where the patch is not yet available.
• Hunt historical logs for exploitation indicators — see Detection signatures below.

05Technical details

For the full vendor write-up, exploit chains, and reference implementations, see the references list in section 09.

06Detection signatures

Ask SARA in chat to draft a starting detection for this CVE in your stack of choice.

07Related CVEs

No directly-cited follow-up CVEs in the KB record for this advisory. The references list in section 09 carries the vendor cross-references.

08Timeline

• Published: 2022-12-01T09:26:48.459Z
• Last modified: 2025-04-14T17:51:37.058Z

09References

• onekey.com — https://onekey.com/blog/security-advisory-asus-m25-nas-vulnerability/