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CVE-2025-5087VulnerabilityPublished

CVE-2025-5087: Kaleris Navis N4 · Cleartext Transmission

Affects Kaleris Navis N4Source CVE Database V5

0

Not known to be exploited · CVSS 6.0 Medium.

Data as of 25 Oct 2026, 19:02 UTC

CVSS 4.0 base score
6.0Medium
How severe the flaw is on the 0–10 CVSS scale.
EPSS
0.2% chance of exploitation in 30 days – higher than 16% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
CVSS:4.0/AV:N/AC:H/AT:N/PR:N/UI:P/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N

Exploitation evidence

  1. Disclosed: evidence found.

    CVE published 24 Jun 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

Affected software

ProductAffectedFixed in
Kaleris Navis N4Affected
  • =0
Fixed in–

AI-suggested

1. Immediate implementation of network segmentation and isolation for Navis N4 Ultra Light Clients to limit exposure to untrusted networks and reduce the risk of traffic interception. 2. Deployment of VPNs or secure tunnels (e.g., IPsec) to encrypt traffic between clients and servers until an official patch or secure update is available. 3. Configuration changes to disable or restrict the use of the Ultra Light Client where possible, or enforce usage only within trusted internal networks. 4. Monitoring and logging of network traffic for unusual access patterns or repeated authentication failures that might indicate interception attempts. 5. Engage with Kaleris for timely updates or patches that implement secure transport protocols such as HTTPS/TLS for all client-server communications. 6. Conduct regular security awareness training for users to minimize risky behaviors that could facilitate exploitation, given the requirement for user interaction. 7. Review and rotate credentials used by Navis N4 clients to limit the window of exposure if credentials are compromised. 8. Perform penetration testing and vulnerability assessments focused on network traffic interception risks within the operational environment.

Description

Kaleris NAVIS N4 ULC (Ultra Light Client) communicates insecurely using zlib-compressed data over HTTP. An attacker capable of observing network traffic between Ultra Light Clients and N4 servers can extract sensitive information, including plaintext credentials.

References

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