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.
References
Configurations
No configuration.
History
20 Nov 2025, 15:17
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19 Nov 2025, 09:15
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17 Nov 2025, 09:15
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12 Nov 2025, 23:15
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12 Nov 2025, 17:15
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Information
Published : 2025-11-12 17:15
Updated : 2025-11-20 15:17
NVD link : CVE-2025-59088
Mitre link : CVE-2025-59088
CVE.ORG link : CVE-2025-59088
JSON object : View
Products Affected
No product.
CWE
CWE-918
Server-Side Request Forgery (SSRF)
