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CVE-2025-51630VulnerabilityPublished

CVE-2025-51630: n/a

Source CVE Database V5

0

Not known to be exploited · CVSS 9.8 Critical.

Data as of 25 Oct 2026, 19:02 UTC

CVSS 3.1 base score
9.8Critical
How severe the flaw is on the 0–10 CVSS scale.
EPSS
0.5% chance of exploitation in 30 days – higher than 43% 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:H

Exploitation evidence

  1. Disclosed: evidence found.

    CVE published 17 Jul 2025

  2. Detectable: no evidence on record.

    No public nuclei template indexed

  3. Weaponised: no evidence on record.

    No public exploit code indexed in Metasploit or Exploit-DB

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

    Not in CISA KEV and no source reports exploitation

  5. Observed by OffSeq 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 2026-10-25.

What to do

AI-suggested

1. Immediate mitigation should include restricting access to the router’s management interface by disabling remote management or limiting it to trusted IP addresses. 2. Network segmentation should be enforced to isolate vulnerable devices from critical systems. 3. Monitor network traffic for unusual activity or attempts to exploit the ePort parameter. 4. Apply any available firmware updates from TOTOLINK as soon as they are released. 5. 6. Implement strong authentication mechanisms for router management interfaces, including complex passwords and, if supported, multi-factor authentication. 7. Regularly audit router configurations to ensure port filtering rules and other security settings have not been tampered with. 8. Employ intrusion detection/prevention systems (IDS/IPS) to detect exploitation attempts targeting this vulnerability. 9. Educate IT staff about the vulnerability and ensure incident response plans include steps for router compromise scenarios.

Description

TOTOLINK N350RT V9.3.5u.6139_B20201216 was discovered to contain a buffer overflow via the ePort parameter in the function setIpPortFilterRules.

References

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