CVE-2025-13184: Toto Link X5000R's (AX1800 router) · Missing Authentication
Affects Toto Link X5000R's (AX1800 router)Source CVE Database V5
Not known to be exploited · 20% EPSS · CVSS 9.8 Critical.
Data as of 26 Oct 2026, 06:26 UTC
- EPSS
- 20.0% chance of exploitation in 30 days – higher than 97% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:HExploitation evidence
Disclosed: evidence found.
CVE published 10 Dec 2025
Detectable: no evidence on record.
No public nuclei template indexed
Weaponised: no evidence on record.
No public exploit code indexed in Metasploit or Exploit-DB
Exploited in the wildExploited: no evidence on record.
Not in CISA KEV and no source reports exploitation
Observed by OffSeq MirageSeen by Mirage: no evidence on record.
No attack traffic recorded by OffSeq Mirage sensors
A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 2026-10-26.
What to do
Affected software
| Product | Affected | Fixed in |
|---|---|---|
| Toto Link X5000R's (AX1800 router) | Affected
| Fixed in– |
AI-suggested
Immediate mitigation steps include isolating affected Toto Link X5000R routers from untrusted networks and disabling Telnet access at the network perimeter. Network administrators should implement strict firewall rules to block inbound Telnet (TCP port 23) traffic and monitor for any unauthorized Telnet sessions. Until an official firmware patch is released, organizations should consider replacing vulnerable devices or deploying network-level intrusion detection systems to alert on suspicious activity related to cstecgi.cgi or Telnet enablement attempts. Regularly auditing router configurations to ensure Telnet is disabled by default and changing default passwords on all devices is critical. Vendors and users should prioritize firmware updates as soon as patches become available. Additionally, segmenting critical network assets behind more secure gateways and employing VPNs or encrypted management channels can reduce exposure. Security teams should also conduct threat hunting for signs of exploitation and educate users about the risks of unmanaged network devices.
Description
Unauthenticated Telnet enablement via cstecgi.cgi (auth bypass) leading to unauthenticated root login with a blank password on factory/reset X5000R V9.1.0u.6369_B20230113 (arbitrary command execution). Earlier versions that share the same implementation, may also be affected.