VulnerabilityDeferred

CVE-2025-5087

Kaleris NAVIS N4 ULC (Ultra Light Client) communicates insecurely using zlib-compressed data over HTTP.

MEDIUM 6.0EPSS 0.25%

Does this matter?

Lower severity and a low EPSS score (0.25%). Track it; it rarely justifies an emergency change on its own.

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.

CVSS 4.0: 6.0 MEDIUMCVSS:4.0/AV:N/AC:H/AT:N/PR:N/UI:P/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/M
EPSS: 0.25% probability · 17th percentile
Public exploits: None in Exploit-DB
CISA KEV: Not listed
Weakness: CWE-319
Source: ics-cert@hq.dhs.gov

EPSS trend

EPSS 0.3% since 26 October 2026; no change recorded yet. Points are recorded when the score first appears and whenever it moves by a percentage point or more.

References

https://www.cisa.gov/news-events/ics-advisories/icsa-25-175-01

Source: NVD record, EPSS from FIRST.org, KEV from CISA, exploits from Exploit-DB. Refreshed daily. Download this record as JSON.