RCE in Iptime A1

CVE-2025-55423

A command injection vulnerability exists in the upnp_relay() function in multiple ipTIME router models because the controlURL value used to pass port-forwarding information to an upper router is passed to system() without proper validation…

Vulnerability class: RCE (Remote Code Execution)

EPSS: 0.033 (87.3th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 9.8 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.

Affected products

Weakness classification (CWE)

Public proof-of-concept exploits

References

Frequently asked questions

What is CVE-2025-55423?
CVE-2025-55423 is a critical-severity vulnerability in Iptime A1, classified under Code Injection. CVSS score: 9.8/10. Published 2026-01-20.
How severe is CVE-2025-55423?
Critical severity. CVSS v3 base score is 9.8 out of 10.
Is CVE-2025-55423 known to be exploited?
1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.