CVE-2025-51381: KAON KCM3100 · Authentication Bypass Using an Alternate Path or Channel
Affects KAON KCM3100Source CVE Database V5
Not known to be exploited · CVSS 9.8 Critical.
Data as of 26 Oct 2026, 06:26 UTC
- EPSS
- 0.6% chance of exploitation in 30 days – higher than 52% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:HExploitation evidence
Disclosed: evidence found.
CVE published 18 Jun 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 |
|---|---|---|
| KAON KCM3100 | Affected
| Fixed in– |
AI-suggested
1. Immediate network segmentation: Isolate KAON KCM3100 devices on dedicated VLANs with strict access controls to limit LAN access only to trusted devices and administrators. 2. Monitor network traffic for unusual access patterns or unauthorized attempts to communicate with the device, using IDS/IPS solutions tuned for KAON device signatures. 3. Restrict physical and logical access to the LAN segments where these devices reside, enforcing strong endpoint security to prevent initial compromise. 4. Implement network access control (NAC) solutions to ensure only authorized devices can connect to the LAN. 5. Regularly audit device firmware versions and configurations; although no patches are currently available, maintain contact with KAON for updates and apply patches immediately upon release. 6. Employ multi-factor authentication and strong password policies on management interfaces where applicable, even if the vulnerability bypasses authentication, to reduce risk from other attack vectors. 7. Consider deploying network anomaly detection tools to identify lateral movement or unusual device behavior indicative of exploitation attempts. 8. Develop and test incident response plans specifically addressing network device compromise scenarios to ensure rapid containment and recovery.
Description
An authentication bypass vulnerability exists in KCM3100 Ver1.4.2 and earlier. If this vulnerability is exploited, an attacker may bypass the authentication of the product from within the LAN to which the product is connected.