VDB

CVE-2026-11861

CVE-2026-11861 PUBLISHED CVSS 9.6 CRITICAL

Reported by redhat · Published August 20, 2026

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.

Risk Scores

CVSS 3.1
9.6
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:N

Affected Products

VendorProductVersions
Red HatRed Hat Enterprise Linux 100:4.13.4-1.el10_2
Red HatRed Hat Enterprise Linux 10.0 Extended Update Support0:4.12.2-15.el10_0.7
Red HatRed Hat Enterprise Linux 88100020261007071200.143e9e98
Red HatRed Hat Enterprise Linux 88100020261007070536.823393f5
Red HatRed Hat Enterprise Linux 8.6 Advanced Mission Critical Update Support8060020261008134123.c1533a64
Red HatRed Hat Enterprise Linux 8.6 Advanced Mission Critical Update Support8060020261008133528.ada582f1
Red HatRed Hat Enterprise Linux 8.6 Extended Update Support Long-Life Add-On8060020261008134123.c1533a64
Red HatRed Hat Enterprise Linux 8.6 Extended Update Support Long-Life Add-On8060020261008133528.ada582f1
Red HatRed Hat Enterprise Linux 8.8 Telecommunications Update Service8080020261007080925.e581a9e4
Red HatRed Hat Enterprise Linux 8.8 Telecommunications Update Service8080020261007071832.b0a6ceea
Red HatRed Hat Enterprise Linux 8.8 Update Services for SAP Solutions8080020261007080925.e581a9e4
Red HatRed Hat Enterprise Linux 8.8 Update Services for SAP Solutions8080020261007071832.b0a6ceea
Red HatRed Hat Enterprise Linux 90:4.13.4-1.el9_8
Red HatRed Hat Enterprise Linux 9.2 Update Services for SAP Solutions0:4.10.1-12.el9_2.7
Red HatRed Hat Enterprise Linux 9.4 Update Services for SAP Solutions0:4.11.0-15.el9_4.9
Red HatRed Hat Enterprise Linux 9.6 Extended Update Support0:4.12.2-14.el9_6.8
Red HatRed Hat Enterprise Linux 6
Red HatRed Hat Enterprise Linux 7
Red HatRed Hat Enterprise Linux 9.2 Update Services for SAP Solutions0:4.10.1-12.el9_2.7
Red HatRed Hat Enterprise Linux 8.6 Extended Update Support Long-Life Add-On8060020261008134123.c1533a64

…and 18 more

Timeline

  • Aug 20, 2026 CVE Published
  • Aug 21, 2026 Security Advisory
  • Aug 22, 2026 Coalition ESS Score
  • Aug 24, 2026 EPSS Score
  • Aug 25, 2026 EPSS Score
  • Sep 9, 2026 EPSS Score
  • Sep 16, 2026 EPSS Score
  • Sep 24, 2026 EPSS Score
  • Sep 24, 2026 Distribution Patch
  • Sep 24, 2026 Security Advisory
  • Sep 25, 2026 EPSS Score
  • Sep 28, 2026 EPSS Score

References

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