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TI-2026-10236 Aliases CVE-2026-11861GHSA-g67c-jg9c-rqh2

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

Priority MEDIUM 43CWE-266Published · Updated

Key facts

Attack vector
Network
Privileges required
Low
User interaction
None
Attack complexity
Low
Impact type
Privilege escalation
Confidentiality · integrity · availability
High · High · None
Fix status
Partial Red Hat: 18 fixed, 1 without a fix

Attack profile from CVSS 3.1 · CNA. Fix status from CNA and Red Hat. Impact type from CWE-266.

Summary

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.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00363 30th percentileScored 2026-11-07
Fix Partial Red Hat: 11 advisoriesRed Hat: 18 fixed, 1 without a fix

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
None
Automatable
No
Technical impact
Total

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
Red HatRed Hat Enterprise Linux 10—4.13.4-1.el10_2Patch availableCNA
Red HatRed Hat Enterprise Linux 10.0 Extended Update Support—4.12.2-15.el10_0.7Patch availableCNA
Red HatRed Hat Enterprise Linux 7 Extended Lifecycle Support—4.6.8-5.el7_9.25Patch availableCNA
Red HatRed Hat Enterprise Linux 8—8100020261007071200.143e9e98Patch availableCNA
Red HatRed Hat Enterprise Linux 8—8100020261007070536.823393f5Patch availableCNA
Red HatRed Hat Enterprise Linux 8.4 Advanced Mission Critical Update Support—8040020261027121250.f153676aPatch availableCNA
Red HatRed Hat Enterprise Linux 8.4 Advanced Mission Critical Update Support—8040020261027121355.5b01ab7ePatch availableCNA
Red HatRed Hat Enterprise Linux 8.4 Extended Update Support Long-Life Add-On—8040020261027121250.f153676aPatch availableCNA
Red HatRed Hat Enterprise Linux 8.4 Extended Update Support Long-Life Add-On—8040020261027121355.5b01ab7ePatch availableCNA
Red HatRed Hat Enterprise Linux 8.6 Advanced Mission Critical Update Support—8060020261008134123.c1533a64Patch availableCNA
Red HatRed Hat Enterprise Linux 8.6 Advanced Mission Critical Update Support—8060020261008133528.ada582f1Patch availableCNA
Red HatRed Hat Enterprise Linux 8.6 Extended Update Support Long-Life Add-On—8060020261008134123.c1533a64Patch availableCNA
Red HatRed Hat Enterprise Linux 8.6 Extended Update Support Long-Life Add-On—8060020261008133528.ada582f1Patch availableCNA
Red HatRed Hat Enterprise Linux 8.8 Telecommunications Update Service—8080020261007080925.e581a9e4Patch availableCNA
Red HatRed Hat Enterprise Linux 8.8 Telecommunications Update Service—8080020261007071832.b0a6ceeaPatch availableCNA
Red HatRed Hat Enterprise Linux 8.8 Update Services for SAP Solutions—8080020261007080925.e581a9e4Patch availableCNA
Red HatRed Hat Enterprise Linux 8.8 Update Services for SAP Solutions—8080020261007071832.b0a6ceeaPatch availableCNA
Red HatRed Hat Enterprise Linux 9—4.13.4-1.el9_8Patch availableCNA
Red HatRed Hat Enterprise Linux 9.2 Update Services for SAP Solutions—4.10.1-12.el9_2.7Patch availableCNA
Red HatRed Hat Enterprise Linux 9.4 Update Services for SAP Solutions—4.11.0-15.el9_4.9Patch availableCNA
Red HatRed Hat Enterprise Linux 9.6 Extended Update Support—4.12.2-14.el9_6.8Patch availableCNA
Red HatRed Hat Enterprise Linux 6——No fix listedCNA
  • Red Hat Enterprise Linux 10 VendorRed Hat Affected — Fixed in 4.13.4-1.el10_2 Patch available CNA
  • Red Hat Enterprise Linux 10.0 Extended Update Support VendorRed Hat Affected — Fixed in 4.12.2-15.el10_0.7 Patch available CNA
  • Red Hat Enterprise Linux 7 Extended Lifecycle Support VendorRed Hat Affected — Fixed in 4.6.8-5.el7_9.25 Patch available CNA
  • Red Hat Enterprise Linux 8 VendorRed Hat Affected — Fixed in 8100020261007071200.143e9e98 Patch available CNA
  • Red Hat Enterprise Linux 8 VendorRed Hat Affected — Fixed in 8100020261007070536.823393f5 Patch available CNA
  • Red Hat Enterprise Linux 8.4 Advanced Mission Critical Update Support VendorRed Hat Affected — Fixed in 8040020261027121250.f153676a Patch available CNA
  • Red Hat Enterprise Linux 8.4 Advanced Mission Critical Update Support VendorRed Hat Affected — Fixed in 8040020261027121355.5b01ab7e Patch available CNA
  • Red Hat Enterprise Linux 8.4 Extended Update Support Long-Life Add-On VendorRed Hat Affected — Fixed in 8040020261027121250.f153676a Patch available CNA
  • Red Hat Enterprise Linux 8.4 Extended Update Support Long-Life Add-On VendorRed Hat Affected — Fixed in 8040020261027121355.5b01ab7e Patch available CNA
  • Red Hat Enterprise Linux 8.6 Advanced Mission Critical Update Support VendorRed Hat Affected — Fixed in 8060020261008134123.c1533a64 Patch available CNA
  • Red Hat Enterprise Linux 8.6 Advanced Mission Critical Update Support VendorRed Hat Affected — Fixed in 8060020261008133528.ada582f1 Patch available CNA
  • Red Hat Enterprise Linux 8.6 Extended Update Support Long-Life Add-On VendorRed Hat Affected — Fixed in 8060020261008134123.c1533a64 Patch available CNA
  • Red Hat Enterprise Linux 8.6 Extended Update Support Long-Life Add-On VendorRed Hat Affected — Fixed in 8060020261008133528.ada582f1 Patch available CNA
  • Red Hat Enterprise Linux 8.8 Telecommunications Update Service VendorRed Hat Affected — Fixed in 8080020261007080925.e581a9e4 Patch available CNA
  • Red Hat Enterprise Linux 8.8 Telecommunications Update Service VendorRed Hat Affected — Fixed in 8080020261007071832.b0a6ceea Patch available CNA
  • Red Hat Enterprise Linux 8.8 Update Services for SAP Solutions VendorRed Hat Affected — Fixed in 8080020261007080925.e581a9e4 Patch available CNA
  • Red Hat Enterprise Linux 8.8 Update Services for SAP Solutions VendorRed Hat Affected — Fixed in 8080020261007071832.b0a6ceea Patch available CNA
  • Red Hat Enterprise Linux 9 VendorRed Hat Affected — Fixed in 4.13.4-1.el9_8 Patch available CNA
  • Red Hat Enterprise Linux 9.2 Update Services for SAP Solutions VendorRed Hat Affected — Fixed in 4.10.1-12.el9_2.7 Patch available CNA
  • Red Hat Enterprise Linux 9.4 Update Services for SAP Solutions VendorRed Hat Affected — Fixed in 4.11.0-15.el9_4.9 Patch available CNA
  • Red Hat Enterprise Linux 9.6 Extended Update Support VendorRed Hat Affected — Fixed in 4.12.2-14.el9_6.8 Patch available CNA
  • Red Hat Enterprise Linux 6 VendorRed Hat Affected — Fixed in — No fix listed CNA

CPE configurations NVD · 5

CPEVersionsRoleVendor
cpe:2.3:a:freeipa:freeipa:*:*:*:*:*:*:*:*before 4.13.3VulnerableFreeIPA
cpe:2.3:o:redhat:enterprise_linux:7.0:*:*:*:*:*:*:*7.0VulnerableRed Hat
cpe:2.3:o:redhat:enterprise_linux:8.0:*:*:*:*:*:*:*8.0VulnerableRed Hat
cpe:2.3:o:redhat:enterprise_linux:9.0:*:*:*:*:*:*:*9.0VulnerableRed Hat
cpe:2.3:o:redhat:enterprise_linux:10.0:*:*:*:*:*:*:*10.0VulnerableRed Hat
  • cpe:2.3:a:freeipa:freeipa:*:*:*:*:*:*:*:* Versions before 4.13.3 Vulnerable ·FreeIPA
  • cpe:2.3:o:redhat:enterprise_linux:7.0:*:*:*:*:*:*:* Versions 7.0 Vulnerable ·Red Hat
  • cpe:2.3:o:redhat:enterprise_linux:8.0:*:*:*:*:*:*:* Versions 8.0 Vulnerable ·Red Hat
  • cpe:2.3:o:redhat:enterprise_linux:9.0:*:*:*:*:*:*:* Versions 9.0 Vulnerable ·Red Hat
  • cpe:2.3:o:redhat:enterprise_linux:10.0:*:*:*:*:*:*:* Versions 10.0 Vulnerable ·Red Hat

Remediation

Red Hat 11 advisories

  • RHSA-2026:93452 Released 2026-11-02 · Red Hat rating Critical
    idm:client security update
    • Red Hat Enterprise Linux AppStream AUS (v.8.4) bind-dyndb-ldap-11.6-2.module+el8.4.0+21736+855b82c8.1.src::idm:DL1, bind-dyndb-ldap-11.6-2.module+el8.4.0+21736+855b82c8.1.x86_64::idm:DL1, custodia-0.6.0-3.module+el8.1.0+4098+f286395e.noarch::idm:DL1 +47
    • Red Hat Enterprise Linux AppStream EUS EXTENSION (v.8.4) bind-dyndb-ldap-11.6-2.module+el8.4.0+21736+855b82c8.1.src::idm:DL1, bind-dyndb-ldap-11.6-2.module+el8.4.0+21736+855b82c8.1.x86_64::idm:DL1, custodia-0.6.0-3.module+el8.1.0+4098+f286395e.noarch::idm:DL1 +47
  • RHSA-2026:93071 Released 2026-10-30 · Red Hat rating Critical
    ipa security update
    • Red Hat Enterprise Linux Server (v. 7 ELS) ipa-4.6.8-5.el7_9.25, ipa-client-4.6.8-5.el7_9.25, ipa-client-common-4.6.8-5.el7_9.25 +9
  • RHSA-2026:89836 Released 2026-10-26 · Red Hat rating Critical
    idm:DL1 security, bug fix, and enhancement update
    • Red Hat Enterprise Linux AppStream AUS (v.8.6) bind-dyndb-ldap-11.6-4.module+el8.6.0+21751+4d78cb83.3.src::idm:DL1, bind-dyndb-ldap-11.6-4.module+el8.6.0+21751+4d78cb83.3.x86_64::idm:DL1, custodia-0.6.0-3.module+el8.1.0+4098+f286395e.noarch::idm:DL1 +47
    • Red Hat Enterprise Linux AppStream EUS EXTENSION (v.8.6) bind-dyndb-ldap-11.6-4.module+el8.6.0+21751+4d78cb83.3.src::idm:DL1, bind-dyndb-ldap-11.6-4.module+el8.6.0+21751+4d78cb83.3.x86_64::idm:DL1, custodia-0.6.0-3.module+el8.1.0+4098+f286395e.noarch::idm:DL1 +47
Show 8 more Red Hat advisories
  • RHSA-2026:83460 Released 2026-10-15 · Red Hat rating Critical
    idm:DL1 security, bug fix, and enhancement update
    • Red Hat Enterprise Linux AppStream (v. 8) bind-dyndb-ldap-11.6-6.module+el8.10.0+23009+91fb337e.aarch64::idm:DL1, bind-dyndb-ldap-11.6-6.module+el8.10.0+23009+91fb337e.ppc64le::idm:DL1, bind-dyndb-ldap-11.6-6.module+el8.10.0+23009+91fb337e.s390x::idm:DL1 +47
  • RHSA-2026:83461 Released 2026-10-15 · Red Hat rating Critical
    idm:DL1 security, bug fix, and enhancement update
    • Red Hat Enterprise Linux AppStream E4S (v.8.8) bind-dyndb-ldap-11.6-4.module+el8.8.0+21675+157fa23b.2.ppc64le::idm:DL1, bind-dyndb-ldap-11.6-4.module+el8.8.0+21675+157fa23b.2.src::idm:DL1, bind-dyndb-ldap-11.6-4.module+el8.8.0+21675+157fa23b.2.x86_64::idm:DL1 +47
    • Red Hat Enterprise Linux AppStream TUS (v.8.8) bind-dyndb-ldap-11.6-4.module+el8.8.0+21675+157fa23b.2.src::idm:DL1, bind-dyndb-ldap-11.6-4.module+el8.8.0+21675+157fa23b.2.x86_64::idm:DL1, custodia-0.6.0-3.module+el8.1.0+4098+f286395e.noarch::idm:DL1 +47
  • RHSA-2026:83085 Released 2026-10-14 · Red Hat rating Critical
    ipa security, bug fix, and enhancement update
    • Red Hat Enterprise Linux AppStream E4S (v.9.2) ipa-4.10.1-12.el9_2.7, ipa-client-4.10.1-12.el9_2.7, ipa-client-common-4.10.1-12.el9_2.7 +11
  • RHSA-2026:83084 Released 2026-10-14 · Red Hat rating Critical
    ipa security update
    • Red Hat Enterprise Linux AppStream E4S (v.9.4) ipa-4.11.0-15.el9_4.9, ipa-client-4.11.0-15.el9_4.9, ipa-client-common-4.11.0-15.el9_4.9 +11
  • RHSA-2026:83083 Released 2026-10-14 · Red Hat rating Critical
    ipa security update
    • Red Hat CodeReady Linux Builder EUS (v.9.6) python3-ipatests-4.12.2-14.el9_6.8
    • Red Hat Enterprise Linux AppStream EUS (v.9.6) ipa-4.12.2-14.el9_6.8, ipa-client-4.12.2-14.el9_6.8, ipa-client-common-4.12.2-14.el9_6.8 +15
  • RHSA-2026:82935 Released 2026-10-14 · Red Hat rating Critical
    ipa security update
    • Red Hat Enterprise Linux AppStream EUS (v. 10.0) ipa-4.12.2-15.el10_0.7, ipa-client-4.12.2-15.el10_0.7, ipa-client-common-4.12.2-15.el10_0.7 +15
    • Red Hat Enterprise Linux CodeReady Linux Builder EUS (v. 10.0) python3-ipatests-4.12.2-15.el10_0.7
  • RHSA-2026:72279 Released 2026-09-28 · Red Hat rating Critical
    ipa security, bug fix, and enhancement update
    • Red Hat Enterprise Linux AppStream (v. 10) ipa-4.13.4-1.el10_2, ipa-client-4.13.4-1.el10_2, ipa-client-common-4.13.4-1.el10_2 +15
    • Red Hat Enterprise Linux CodeReady Linux Builder (v. 10) python3-ipatests-4.13.4-1.el10_2
  • RHSA-2026:70564 Released 2026-09-24 · Red Hat rating Critical
    ipa security, bug fix, and enhancement update
    • Red Hat Enterprise Linux AppStream (v. 9) ipa-4.13.4-1.el9_8, ipa-client-4.13.4-1.el9_8, ipa-client-common-4.13.4-1.el9_8 +15
    • Red Hat Enterprise Linux CodeReady Linux Builder (v. 9) python3-ipatests-4.13.4-1.el9_8

Vendor assessments

Red Hat

Red Hat rating: Moderate. Red Hat's page for this CVE →

ProductStatusPlan or fix
Red Hat Enterprise Linux 6AffectedNo fix planned: Out of support scope
Red Hat CodeReady Linux Builder EUS (v.9.6)Fixed RHSA-2026:83083
Red Hat Enterprise Linux AppStream (v. 10)Fixed RHSA-2026:72279
Red Hat Enterprise Linux AppStream (v. 8)Fixed RHSA-2026:83460
Red Hat Enterprise Linux AppStream (v. 9)Fixed RHSA-2026:70564
Red Hat Enterprise Linux AppStream AUS (v.8.4)Fixed RHSA-2026:93452
Red Hat Enterprise Linux AppStream AUS (v.8.6)Fixed RHSA-2026:89836
Red Hat Enterprise Linux AppStream E4S (v.8.8)Fixed RHSA-2026:83461
Red Hat Enterprise Linux AppStream E4S (v.9.2)Fixed RHSA-2026:83085
Red Hat Enterprise Linux AppStream E4S (v.9.4)Fixed RHSA-2026:83084
Red Hat Enterprise Linux AppStream EUS (v. 10.0)Fixed RHSA-2026:82935
Red Hat Enterprise Linux AppStream EUS (v.9.6)Fixed RHSA-2026:83083
Red Hat Enterprise Linux AppStream EUS EXTENSION (v.8.4)Fixed RHSA-2026:93452
Red Hat Enterprise Linux AppStream EUS EXTENSION (v.8.6)Fixed RHSA-2026:89836
Red Hat Enterprise Linux AppStream TUS (v.8.8)Fixed RHSA-2026:83461
Red Hat Enterprise Linux CodeReady Linux Builder (v. 10)Fixed RHSA-2026:72279
Red Hat Enterprise Linux CodeReady Linux Builder (v. 9)Fixed RHSA-2026:70564
Red Hat Enterprise Linux CodeReady Linux Builder EUS (v. 10.0)Fixed RHSA-2026:82935
Red Hat Enterprise Linux Server (v. 7 ELS)Fixed RHSA-2026:93071

Timeline

  1. 2026-10-02 Threatist record created from CVE-2026-11861
  2. 2026-10-03 Alias added: GHSA-g67c-jg9c-rqh2
  3. 2026-10-14 Fix available: ipa@0:4.12.2-15.el10_0.7 · CNA
  4. 2026-10-14 1 new reference · CNA
  5. 2026-10-15 Fix available: RHSA-2026:82935 · Red Hat
  6. 2026-10-15 Fix available: idm:[email protected], idm:[email protected], idm:[email protected] +4 · CNA
  7. 2026-10-15 5 new references · CNA
  8. 2026-10-16 Fix available: RHSA-2026:83083 · Red Hat
  9. 2026-10-16 Fix available: RHSA-2026:83084 · Red Hat
  10. 2026-10-16 Fix available: RHSA-2026:83085 · Red Hat
  11. 2026-10-16 Fix available: RHSA-2026:83460 · Red Hat
  12. 2026-10-16 Fix available: RHSA-2026:83461 · Red Hat
  13. 2026-10-16 Fix available: Red Hat CodeReady Linux Builder EUS (v.9.6), Red Hat Enterprise Linux AppStream (v. 8), Red Hat Enterprise Linux AppStream E4S (v.8.8) +6 · Red Hat
  14. 2026-10-26 Fix available: idm:[email protected], idm:[email protected] · CNA
  15. 2026-10-26 1 new reference · CNA
  16. 2026-10-26 Fix available: RHSA-2026:89836 · Red Hat
  17. 2026-10-26 Fix available: Red Hat Enterprise Linux AppStream AUS (v.8.6), Red Hat Enterprise Linux AppStream EUS EXTENSION (v.8.6) · Red Hat
  18. 2026-10-30 Fix available: Red Hat Enterprise Linux Server (v. 7 ELS) · Red Hat
  19. 2026-10-30 Fix available: ipa@0:4.6.8-5.el7_9.25 · CNA
  20. 2026-10-30 1 new reference · CNA
  21. 2026-10-31 Fix available: RHSA-2026:93071 · Red Hat
  22. 2026-11-02 Fix available: idm:[email protected], idm:[email protected] · CNA
  23. 2026-11-02 1 new reference · CNA
  24. 2026-11-02 Fix available: RHSA-2026:93452 · Red Hat
  25. 2026-11-02 Fix available: Red Hat Enterprise Linux AppStream AUS (v.8.4), Red Hat Enterprise Linux AppStream EUS EXTENSION (v.8.4) · Red Hat

References

Advisory 13

  • TI-2019-08259 Underflow in PHP-FPM can lead to RCE KEVCVSS 3.1CRITICAL 9.8
  • TI-2018-10530 Code injection in [UNKNOWN] RichFaces KEVCVSS 3.1CRITICAL 9.8
  • TI-2014-05975 GNU Bash through 4.3 bash43-025 processes trailing strings after certain malformed… KEVCVSS 3.1CRITICAL 9.8
  • TI-2014-05157 GNU Bash through 4.3 processes trailing strings after function definitions in the values… KEVCVSS 3.1CRITICAL 9.8
  • TI-2025-23530 Sudo before 1.9.17p1 allows local users to obtain root access because /etc/nsswitch.conf… KEVCVSS 3.1CRITICAL 9.3
  • TI-2021-17490 mod_proxy SSRF KEVCVSS 3.1CRITICAL 9.0
See all 1955 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences