9.6

CVE-2026-11861: freeipa Incorrect Privilege Assignment

CVSS: 9.6v3.1CriticalModified
AliasesUBUNTU-CVE-2026-11861DEBIAN-CVE-2026-11861CGA-25fj-g59f-7ghv
Published 20-08-2026Last modified 15-10-2026
Open JSON

Vulnerability summary

CVE-2026-11861 is a critical (CVSS 9.6) Incorrect Privilege Assignment vulnerability in freeipa. EPSS estimates a 0.35% chance of exploitation in the next 30 days, higher than 27.1% of scored vulnerabilities.

Overall risk
70/100
0100
High · default modelHow is this calculated?
CVSS score
9.6/10
010
Critical · v3.1 (CVE.org)
EPSS score
0.35%
0%100%
Low · +0.16 pp in 30 days
KEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded

Advisory lineage

Upstream 0 · Downstream 8 · Related 1
RHSA-2026:70564RHSA-2026:72279RHSA-2026:82935RHSA-2026:83083RHSA-2026:83084RHSA-2026:83085

Timeline

  1. 20-08-2026
    PublishedVulnerability first disclosed.
  2. 15-10-2026
    Last modifiedVulnerability information updated.

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.

CVSS metrics

5 scores · 5 sources · 1 version

EPSS trend

Probability

0.35%

Chance of exploitation in the next 30 days

Percentile

27%

Versus all other CVEs

30-day change

+0.16 pp

From 0.19% on 20-09-2026

20-09-202620-10-2026
EPSS score
0.35%

Known exploited

Compare KEV catalogs

Not in any of the 3 tracked catalogs.

Public exploits

0 found

No public exploits indexed.

Weaknesses

CWE · root cause

Affected systems

Chainguard8 products
  • freeipa< 4.13.3-r0
  • freeipa-doc< 4.13.3-r0
  • py3.13-ipaclient< 4.13.3-r0
  • py3.13-ipalib< 4.13.3-r0
  • py3.13-ipaplatform< 4.13.3-r0
Debian1 product
  • freeipaAll versions (No fix recorded)
Freeipa1 product
Redhat1 product
Ubuntu1 product
  • freeipaAll versions (No fix recorded)

5 vendors · 12 products

References

16 links
Show all 16 references