CVE•Published 2026-08-20•Modified 2026-08-24•1 article on news•5 live references•NVD data

CVE-2026-11861Freeipa · Freeipa

Vulnerability data via NVD (ingested)

CVSS v3.1

9.6

CRITICAL

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:N

EPSS percentile

Exploit Prediction Scoring System · top 90% of all CVEs

Weaknesses (CWE)

CWE-266Incorrect Privilege Assignment

Description

A flaw was found in FreeIPA. When a trust relationship is configured between FreeIPA and Active Directory, Active Directory users can bypass authentication for FreeIPA services, including the portal, SMB server, and LDAP directory. This is possible by impersonating a client name in the Ticket Granting Service (TGS) due to FreeIPA services not verifying Privilege Attribute Certificate (PAC) certificates. This vulnerability could allow an authenticated Active Directory user to escalate their privileges within the FreeIPA domain.

Timeline

Published 2026-08-20

Modified 2026-08-24

External references

NVD MITRE Exploit-DB GitHub PoC VulnCheck

Search for exposed instances

Shodan + Censys queries derived from NVD's CPE data. The vuln tag catches assets Shodan has explicitly linked to this CVE; the product / banner fingerprints find exposed instances even when the vuln tag was never applied (which is common).

Shodan · vuln tag0 hosts

vuln:CVE-2026-11861

Hosts Shodan has explicitly fingerprinted as vulnerable.

Shodan · product

product:"Freeipa Freeipa"

All exposed Freeipa Freeipa instances — cross-reference with the CVE's affected-version range.

Shodan · banner/body mention

http.html:"Freeipa"

HTTP body or banner mentions "Freeipa" — catches deploys Shodan didn't identify as a product.

More intel sources (5)

Shodan report

vuln:CVE-2026-11861