SSRF in Latchset Kdcproxy

CVE-2025-59088

If kdcproxy receives a request for a realm which does not have server addresses defined in its configuration, by default, it will query SRV records in the DNS zone matching the requested realm name. This creates a server-side request forgery vulnerability, since an attacker could send a request for a realm matching a DNS zone where they created SRV records pointing to arbitrary ports and hostnames (which may resolve to loopback or internal IP addresses). This vulnerability can be exploited to probe internal network topology and firewall rules, perform port scanning, and exfiltrate data. Deployments where the "use_dns" setting is explicitly set to false are not affected.

Vulnerability class: SSRF (Server-Side Request Forgery)

EPSS: 0.004 (36.6th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 8.6 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:N/A:N.

Affected products

Weakness classification (CWE)

References

Frequently asked questions

What is CVE-2025-59088?
CVE-2025-59088 is a high-severity vulnerability in Latchset Kdcproxy, classified under Server-Side Request Forgery (SSRF). CVSS score: 8.6/10. Published 2025-11-12.
How severe is CVE-2025-59088?
High severity. CVSS v3 base score is 8.6 out of 10.