CVE-2026-11861critical9.6

Freeipa: idm: ipa: freeipa: obtaining tgs with impersonating cname through trust relationships

Impact

A flaw in FreeIPA allows authenticated Active Directory users to bypass authentication and escalate privileges within the FreeIPA domain when a trust relationship is configured. The vulnerability occurs due to FreeIPA services not verifying Privilege Attribute Certificate (PAC) certificates. Affected versions are not explicitly stated, but various Red Hat Enterprise Linux versions are listed with 'unaffected' or 'unknown' status.

Summarized by @cf/meta/llama-3.3-70b-instruct-fp8-fast. Verify details against the original sources.

What to do

Mitigation for this issue is either not available or the currently available options do not meet the Red Hat Product Security criteria comprising ease of use and deployment, applicability to widespread installation base, or stability.

redhat guidance

Affected packages

This source has no supported package-version data for matching. You can read the advisory here, but this record alone cannot power a dependency check.

Affected products

Vendor version evidence. Product records are separate from automatic dependency matching.

Red Hat · redhat

Red Hat Enterprise Linux 10

1 range

redhat version evidence

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unaffected

0:4.13.4-1.el10_2 → before *

rpm versions

Other versions: affected

Product identifiers (CPE)

cpe:/o:redhat:enterprise_linux:10.2

Red Hat · redhat

Red Hat Enterprise Linux 10.0 Extended Update Support

1 range

redhat version evidence

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unaffected

0:4.12.2-15.el10_0.7 → before *

rpm versions

Other versions: affected

Product identifiers (CPE)

cpe:/o:redhat:enterprise_linux_eus:10.0

Red Hat · redhat

Red Hat Enterprise Linux 7 Extended Lifecycle Support

1 range

redhat version evidence

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unaffected

0:4.6.8-5.el7_9.25 → before *

rpm versions

Other versions: affected

Product identifiers (CPE)

cpe:/o:redhat:rhel_els:7

Red Hat · redhat

Red Hat Enterprise Linux 8

1 range

redhat version evidence

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unaffected

8100020261007071200.143e9e98 → before *

rpm versions

Other versions: affected

Product identifiers (CPE)

cpe:/a:redhat:enterprise_linux:8::appstream

Red Hat · redhat

Red Hat Enterprise Linux 8

1 range

redhat version evidence

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unaffected

8100020261007070536.823393f5 → before *

rpm versions

Other versions: affected

Product identifiers (CPE)

cpe:/a:redhat:enterprise_linux:8::appstream

Red Hat · redhat

Red Hat Enterprise Linux 8.6 Advanced Mission Critical Update Support

1 range

redhat version evidence

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unaffected

8060020261008134123.c1533a64 → before *

rpm versions

Other versions: affected

Product identifiers (CPE)

cpe:/a:redhat:rhel_aus:8.6::appstreamcpe:/a:redhat:rhel_eus_long_life:8.6::appstream

Red Hat · redhat

Red Hat Enterprise Linux 8.6 Advanced Mission Critical Update Support

1 range

redhat version evidence

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unaffected

8060020261008133528.ada582f1 → before *

rpm versions

Other versions: affected

Product identifiers (CPE)

cpe:/a:redhat:rhel_aus:8.6::appstreamcpe:/a:redhat:rhel_eus_long_life:8.6::appstream

Red Hat · redhat

Red Hat Enterprise Linux 8.6 Extended Update Support Long-Life Add-On

1 range

redhat version evidence

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unaffected

8060020261008134123.c1533a64 → before *

rpm versions

Other versions: affected

Product identifiers (CPE)

cpe:/a:redhat:rhel_aus:8.6::appstreamcpe:/a:redhat:rhel_eus_long_life:8.6::appstream

Red Hat · redhat

Red Hat Enterprise Linux 8.6 Extended Update Support Long-Life Add-On

1 range

redhat version evidence

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unaffected

8060020261008133528.ada582f1 → before *

rpm versions

Other versions: affected

Product identifiers (CPE)

cpe:/a:redhat:rhel_aus:8.6::appstreamcpe:/a:redhat:rhel_eus_long_life:8.6::appstream

Red Hat · redhat

Red Hat Enterprise Linux 8.8 Telecommunications Update Service

1 range

redhat version evidence

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unaffected

8080020261007080925.e581a9e4 → before *

rpm versions

Other versions: affected

Product identifiers (CPE)

cpe:/a:redhat:rhel_e4s:8.8::appstreamcpe:/a:redhat:rhel_tus:8.8::appstream

Red Hat · redhat

Red Hat Enterprise Linux 8.8 Telecommunications Update Service

1 range

redhat version evidence

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unaffected

8080020261007071832.b0a6ceea → before *

rpm versions

Other versions: affected

Product identifiers (CPE)

cpe:/a:redhat:rhel_e4s:8.8::appstreamcpe:/a:redhat:rhel_tus:8.8::appstream

Red Hat · redhat

Red Hat Enterprise Linux 8.8 Update Services for SAP Solutions

1 range

redhat version evidence

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unaffected

8080020261007080925.e581a9e4 → before *

rpm versions

Other versions: affected

Product identifiers (CPE)

cpe:/a:redhat:rhel_e4s:8.8::appstreamcpe:/a:redhat:rhel_tus:8.8::appstream

Red Hat · redhat

Red Hat Enterprise Linux 8.8 Update Services for SAP Solutions

1 range

redhat version evidence

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unaffected

8080020261007071832.b0a6ceea → before *

rpm versions

Other versions: affected

Product identifiers (CPE)

cpe:/a:redhat:rhel_e4s:8.8::appstreamcpe:/a:redhat:rhel_tus:8.8::appstream

Red Hat · redhat

Red Hat Enterprise Linux 9

1 range

redhat version evidence

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unaffected

0:4.13.4-1.el9_8 → before *

rpm versions

Other versions: affected

Product identifiers (CPE)

cpe:/a:redhat:enterprise_linux:9::appstreamcpe:/a:redhat:enterprise_linux:9::crb

Red Hat · redhat

Red Hat Enterprise Linux 9.2 Update Services for SAP Solutions

1 range

redhat version evidence

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unaffected

0:4.10.1-12.el9_2.7 → before *

rpm versions

Other versions: affected

Product identifiers (CPE)

cpe:/a:redhat:rhel_e4s:9.2::appstream

Red Hat · redhat

Red Hat Enterprise Linux 9.4 Update Services for SAP Solutions

1 range

redhat version evidence

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unaffected

0:4.11.0-15.el9_4.9 → before *

rpm versions

Other versions: affected

Product identifiers (CPE)

cpe:/a:redhat:rhel_e4s:9.4::appstream

Red Hat · redhat

Red Hat Enterprise Linux 9.6 Extended Update Support

1 range

redhat version evidence

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unaffected

0:4.12.2-14.el9_6.8 → before *

rpm versions

Other versions: affected

Product identifiers (CPE)

cpe:/a:redhat:rhel_eus:9.6::appstreamcpe:/a:redhat:rhel_eus:9.6::crb

Red Hat · redhat

Red Hat Enterprise Linux 6

0 ranges

redhat version evidence

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Other versions: unknown

Product identifiers (CPE)

cpe:/o:redhat:enterprise_linux:6

Original source 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.

Inside the record

Evidence available

Package identity · not supplied

Version evidence

Remediation guidance

Weakness classification

Additional publishers

Describes the evidence in this view, not whether the product is safe.

Original records

CVE-2026-11861

View the latest unmodified CVE JSON from the official source. It may be newer than this imported page.

cve.new JSON →

Underlying weaknesses

The source’s classification of what caused the vulnerability.

CWE-266 ↗

Incorrect Privilege Assignment

redhat

Contributing organizations · 2

redhat

Assigning organization

2026-10-30

CISA-ADP

Additional data publisher

2026-08-20

What changed

Follow changes

No substantive changes have been recorded here yet. History starts when cve.new observes a change after tracking is enabled; earlier edits are not reconstructed.

Large field values are marked as truncated previews. Original source snapshots remain retained.

References

12 sources

access.redhat.com/errata/RHSA-2026:70564

vendor-advisoryredhat

access.redhat.com/errata/RHSA-2026:72279

vendor-advisoryredhat

access.redhat.com/errata/RHSA-2026:82935

vendor-advisoryredhat

access.redhat.com/errata/RHSA-2026:83083

vendor-advisoryredhat

access.redhat.com/errata/RHSA-2026:83084

vendor-advisoryredhat

access.redhat.com/errata/RHSA-2026:83085

vendor-advisoryredhat

View 6 more references

access.redhat.com/errata/RHSA-2026:83460

vendor-advisoryredhat

access.redhat.com/errata/RHSA-2026:83461

vendor-advisoryredhat

access.redhat.com/errata/RHSA-2026:89836

vendor-advisoryredhat

access.redhat.com/errata/RHSA-2026:93071

vendor-advisoryredhat

access.redhat.com/security/cve/CVE-2026-11861

vdb-entryredhat

bugzilla.redhat.com/show_bug.cgi

issue-trackingredhat

Priority and evidence

Not in CISA KEVNo package fix recorded

KEV coverage does not rule out exploitation.

KEV checked 31/10/2026, 10:20:31 UTC

redhat · CVSS:3.1 · 9.6

Assessment vector

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

Reading the signals

Severity · CVSS: Technical impact and attack conditions. The headline is the highest imported catalog score; sources may disagree.
Observed exploitation · KEV: An absent or unavailable KEV listing does not establish that exploitation has not occurred.
Predicted exploitation · EPSS: No EPSS estimate available in this record.

CISA-ADP · SSVC

CISA Coordinator · 2026-08-20

Exploitation: none
Automatable: no
Technical Impact: total

SSVC describes the publisher’s decision context. Your organization’s exposure and priorities may differ.

Record details

Published: 20/08/2026, 10:39:08 UTC
Modified: 30/10/2026, 18:43:47 UTC
Last imported by cve.new: 30/10/2026, 18:57:00 UTC
Aliases: None recorded

Source evidence

Request a correction or dispute

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Find the responsible CNA →Official dispute and escalation process ↗

CVE CVE-2026-11861

Enrichment coverage

NVDNot fully checked

GHSANot fully checked

EUVDNot fully checked

EPSSNot fully checked

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