Vulnerability · Published Jun 24, 2025 · Assigned by icscert

CVE-2025-2566Deserialization of Untrusted Data in Kaleris Navis N4

Critical 9.3

In plain English

A critical-severity unsafe deserialization in Navis N4 from Kaleris. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.6% (higher than 51% of all known vulnerabilities).

Severity (CVSS 4.0)9.3Critical

Exploit odds (30 days)0.6%top 48.9% of all CVEs

Exploited in the wildNo reportsCISA SSVC: none

Attack toolingNoneno public tooling known

Official 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.

Affected products (as reported)

Vendor	Product	Versions
Kaleris	Navis N4	0 – before 4.0

Weakness: CWE-502 · Vector: 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

References

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