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Vulnerability record · CVE-2025-55423 · published 20 January 2026

CVE-2025-55423: Iptime n104s-r1 firmware code injection vulnerability

Iptime · N104s R1 Firmware

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 or sanitization, allowing OS command injection.

9.8 CVSS 3.1 Critical EPSS 3.8% · top 10.3% CWE-94 · Code injection
9.8CVSS 3.1 base score
3.8%EPSS exploitation probability, 30 days
NoNot in CISA KEV
150Affected product versions listed by NVD
4References, 1 tagged exploit
17 Jun 2026Last modified by NVD

Description

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 or sanitization, allowing OS command injection.

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Affected products

150 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
https://docs.google.com/spreadsheets/d/1kryOFltCmnPJvDTpIrudgryt79uI4PWchuQ8-Gak24c/edit?usp=sharing Third Party Advisory
https://github.com/0x0xxxx/CVE/blob/main/CVE-2025-55423/README.md ExploitThird Party Advisory
https://github.com/0x0xxxx/CVE/blob/main/CVE-2025-55423/assets/affected_products_cve_format.json Third Party Advisory
https://iptime.com/iptime/?pageid=4&page_id=126&dfsid=3&dftid=583&uid=25203&mod=document Vendor Advisory

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Same products first, then exploited flaws of the same weakness class.

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Source: NIST National Vulnerability Database (record CVE-2025-55423), CISA KEV, FIRST EPSS (scores of 2026-09-26). This page is refreshed as NVD updates the record.