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VulnerabilityPublished Updated

CVE-2025-43986: Information Exposure

Source CVE Database V5

0

Not known to be exploited · CVSS 9.8 Critical.

Data as of 26 Oct 2026, 13:47 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 13 Aug 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 26 Oct 2026.

What to do

AI-suggested

Immediate mitigation steps include disabling the TELNET service on all affected KuWFi GC111 devices, especially on WAN interfaces. If disabling TELNET is not feasible, network administrators should restrict access to the TELNET port using firewall rules to allow only trusted internal IP addresses. Implementing network segmentation to isolate these devices from critical network segments can reduce potential impact. Monitoring network traffic for unusual TELNET connections or attempts can help detect exploitation attempts. Since no official patches are currently available, organizations should contact KuWFi for firmware updates or advisories. As a longer-term measure, replacing devices that rely on insecure protocols like TELNET with those supporting secure management protocols such as SSH is recommended. Additionally, organizations should conduct asset inventories to identify all affected devices and ensure they are not exposed to the internet unnecessarily. Employing intrusion detection/prevention systems (IDS/IPS) with signatures for TELNET exploitation attempts can provide additional defense layers.

Description

An issue was discovered on KuWFi GC111 GC111-GL-LM321_V3.0_20191211 devices. The TELNET service is enabled by default and exposed over the WAN interface without authentication.

References

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