CVE-2025-59088Network attack vector

Unauthenticated SSRF via realm-controlled DNS SRV discovery

Published Nov 12, 2025 · Updated Nov 12, 2025

Server-side request forgery in kdcproxy before 1.1.0 allows remote attackers to reach internal hosts through crafted Kerberos realms. The proxy performs DNS SRV discovery for an unconfigured realm and connects to attacker-selected hosts and ports, including loopback and internal addresses, without an address or port policy. Exposure requires DNS discovery to remain enabled and the attacker to control the requested realm's DNS zone; the resulting access supports internal port scanning and data exfiltration.

CVSS severity8.6
High
EPSS probability0.46%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Server-side request forgery in kdcproxy before 1.1.0 allows remote attackers to reach internal hosts through crafted Kerberos realms. The proxy performs DNS SRV discovery for an unconfigured realm and connects to attacker-selected hosts and ports, including loopback and internal addresses, without an address or port policy. Exposure requires DNS discovery to remain enabled and the attacker to control the requested realm's DNS zone; the resulting access supports internal port scanning and data exfiltration.

The record

CVE
CVE-2025-59088
Published
Nov 12, 2025
Updated
Nov 12, 2025
Vendor
389 Directory Server
Product
Red Hat Enterprise Linux 10
Classifications
CWE-918, T1090
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Nov 12, 2025CVE publishedPublication date reported by the CVE source.
  2. Nov 12, 2025Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Affected versions are unavailable in this record. Check the vendor advisory for version and patch details.

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

389 Directory Server · Red Hat Enterprise Linux 10Affected versions are unavailable in this record.
389 Directory Server · Red Hat Enterprise Linux 7Affected versions are unavailable in this record.
389 Directory Server · Red Hat Enterprise Linux 9Affected versions are unavailable in this record.
389 Directory Server · Red Hat Enterprise Linux 10.0 Extended Update SupportAffected versions are unavailable in this record.
389 Directory Server · Red Hat Enterprise Linux 9.6 Extended Update SupportAffected versions are unavailable in this record.
389 Directory Server · Red Hat Enterprise Linux 8Affected versions are unavailable in this record.

Published CVSS scores

8.6Red HatCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:N/A:N

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-918Server-Side Request Forgery (SSRF)
T1090Proxy

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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