Reference page — cumulative record through Monday, October 19, 2026 UTC. Reference pages update as the archive grows; only dated daily editions are immutable pages of record.
CVE-2026-11861
Red Hat Red Hat Enterprise Linux 10 — Freeipa: idm: ipa: freeipa: obtaining tgs with impersonating cname through trust relationships
AV AC PR UI S C I A CVSS EPSS %ile KEV
N L L N U H H N 8.1 .0035 27.0 —
AFFECTED
Product Versions Fixed
Red Hat Enterprise Linux 10 unspecified 0:4.13.4-1.el10_2
Red Hat Enterprise Linux 10.0 Extended Update Support unspecified 0:4.12.2-15.el10_0.7
Red Hat Enterprise Linux 8 unspecified 8100020261007071200.143e9e98
Red Hat Enterprise Linux 8 unspecified 8100020261007070536.823393f5
Red Hat Enterprise Linux 8.8 Telecommunications Update Service unspecified 8080020261007080925.e581a9e4
Red Hat Enterprise Linux 8.8 Telecommunications Update Service unspecified 8080020261007071832.b0a6ceea
Red Hat Enterprise Linux 8.8 Update Services for SAP Solutions unspecified 8080020261007080925.e581a9e4
Red Hat Enterprise Linux 8.8 Update Services for SAP Solutions unspecified 8080020261007071832.b0a6ceea
Red Hat Enterprise Linux 9 unspecified 0:4.13.4-1.el9_8
Red Hat Enterprise Linux 9.2 Update Services for SAP Solutions unspecified 0:4.10.1-12.el9_2.7
+ 4 more
TIMELINE
Jun 10 Reserved by redhat
Aug 20 Published (CNA: redhat)
Sep 23 PATCH SHIPPED — CVE-2026-11861 (Red Hat Enterprise Linux 9). Fixed in Red Hat Enterprise Linux 9 0:4.13.4-1.el9_8.
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.
Lifecycle
Complete event history — 3 events, chronological
| Date | Event | Detail |
|---|
| June 10, 2026 | Reserved | Reserved by redhat |
| August 20, 2026 | Published | Published (CNA: redhat) |
| September 23, 2026 | PATCH SHIPPED | PATCH SHIPPED — CVE-2026-11861 (Red Hat Enterprise Linux 9). Fixed in Red Hat Enterprise Linux 9 0:4.13.4-1.el9_8. |
Affected
Affected products and packages — 14 rows
| Vendor | Product / Package | Ecosystem | Version introduced | Fixed |
|---|
| Red Hat | Red Hat Enterprise Linux 10 | — | — | 0:4.13.4-1.el10_2 |
| Red Hat | Red Hat Enterprise Linux 10.0 Extended Update Support | — | — | 0:4.12.2-15.el10_0.7 |
| Red Hat | Red Hat Enterprise Linux 8 | — | — | 8100020261007071200.143e9e98 |
| Red Hat | Red Hat Enterprise Linux 8 | — | — | 8100020261007070536.823393f5 |
| Red Hat | Red Hat Enterprise Linux 8.8 Telecommunications Update Service | — | — | 8080020261007080925.e581a9e4 |
| Red Hat | Red Hat Enterprise Linux 8.8 Telecommunications Update Service | — | — | 8080020261007071832.b0a6ceea |
| Red Hat | Red Hat Enterprise Linux 8.8 Update Services for SAP Solutions | — | — | 8080020261007080925.e581a9e4 |
| Red Hat | Red Hat Enterprise Linux 8.8 Update Services for SAP Solutions | — | — | 8080020261007071832.b0a6ceea |
| Red Hat | Red Hat Enterprise Linux 9 | — | — | 0:4.13.4-1.el9_8 |
| Red Hat | Red Hat Enterprise Linux 9.2 Update Services for SAP Solutions | — | — | 0:4.10.1-12.el9_2.7 |
| Red Hat | Red Hat Enterprise Linux 9.4 Update Services for SAP Solutions | — | — | 0:4.11.0-15.el9_4.9 |
| Red Hat | Red Hat Enterprise Linux 9.6 Extended Update Support | — | — | 0:4.12.2-14.el9_6.8 |
| Red Hat | Red Hat Enterprise Linux 6 | — | — | — |
| Red Hat | Red Hat Enterprise Linux 7 | — | — | — |
About this page
This is a reference page, not a dated page of record. It assembles the complete lifecycle of CVE-2026-11861 from the CVE Program record, NVD enrichment, the CISA KEV catalog, EPSS, and OSV advisories. The box score's numbers (CVSS, EPSS, KEV status) are current as of Monday, October 19, 2026 UTC and are re-derived as the archive grows; only dated daily editions are immutable pages of record. The authoritative source for this identifier is cve.org.
