CVE-2025-2566

Name: CVE-2025-2566
Creator: NVD / NIST
Published: 2025-06-24T19:15:23.52+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

CRITICALCVSS 9.3/10EPSS 0.53%

Last modified Jun 17, 2026

CVE-2025-2566 is a critical-severity vulnerability rated 9.3/10 on the CVSS scale. Kaleris NAVIS N4 ULC (Ultra Light Client) contains an unsafe Java deserialization vulnerability. An unauthenticated attacker can make specially crafted requests to execute arbitrary code on the server.. EPSS estimates a 0.53% chance of exploitation in the next 30 days.

Description

Kaleris NAVIS N4 ULC (Ultra Light Client) contains an unsafe Java deserialization vulnerability. An unauthenticated attacker can make specially crafted requests to execute arbitrary code on the server.

Metrics

CVSS 4.0

9.3/10

CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/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/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

EPSS Probability

0.53%

40.9th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-502

References

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

Timeline

Published: Jun 24, 2025
Last Modified: Jun 17, 2026
Status: Deferred

Frequently Asked Questions

What is CVE-2025-2566?

How severe is CVE-2025-2566?

CVE-2025-2566 has a CVSS score of 9.3/10 (CRITICAL severity). The EPSS model estimates a 0.53% probability of exploitation in the next 30 days.

How do I fix CVE-2025-2566?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2025-2566?

Run a free Strix scan to check your systems for this vulnerability.

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Source: NVD / NIST