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VulnerabilityPublished Updated

CVE-2025-52089: n300rb · Missing Authentication

Affects n300rbSource CVE Database V5

0

Public exploit available (Exploit-DB) · CVSS 8.8 High.

Data as of 26 Oct 2026, 12:55 UTC

CVSS 3.1 base score
8.8High
How severe the flaw is on the 0–10 CVSS scale.
EPSS
9.6% chance of exploitation in 30 days – higher than 95% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Exploitation evidence

t = 0 is the CVE’s publication on cve.org

  1. Disclosed: evidence found.

    CVE published 11 Jul 2025

  2. Detectable: no evidence on record.

    No public nuclei template indexed

  3. Exploited in the wild: no evidence on record.

    Not in CISA KEV and no source reports exploitation

  4. Observed by OffSeq Mirage: no evidence on record.

    No attack traffic recorded by OffSeq Mirage sensors

Timeline

  1. CVE ID reserved

    by MITRE Corporation

    , 25 days before disclosure

  2. CVE published

    on cve.org

    , t = 0

  3. In Threat Radar

    record ingested

    , the same day as disclosure

  4. First Exploit-DB entry (opens in a new tab)

    TOTOLINK N300RB 8.54 - Command Execution

    , 5 days after disclosure

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 26 Oct 2026.

What to do

Affected software

ProductAffectedFixed in
Totolinktotolink/n300rbpkg:deb/totolink/n300rbOther threatsAffected
  • =8.54
Fixed in–

Check your own hosts for these packages with threat-finder (opens in a new tab), our free open-source scanner.

AI-suggested

Organizations should immediately inventory their network devices to identify any TOTOLINK N300RB routers running firmware version 8.54. Implement strict access control lists (ACLs) to restrict management access to specific IP addresses or VLANs. Monitoring network traffic for unusual command execution or administrative access attempts can help detect exploitation attempts. Where possible, replace vulnerable devices with models from vendors with active security support. Additionally, enforce strong network authentication mechanisms and consider disabling any remote support features if configurable. Regularly check for firmware updates from TOTOLINK and apply patches promptly once available. Educate staff about the risks of connecting unauthorized devices to the network to reduce the risk of local network compromise.

Description

A hidden remote support feature protected by a static secret in TOTOLINK N300RB firmware version 8.54 allows an authenticated attacker to execute arbitrary OS commands with root privileges.

References

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