Ipa: privilege escalation via krbcanonicalname manipulation due to realm-unaware uniqueness enforcement in freeipa ldap datastore
Red Hat · Red Hat Enterprise Linux 10
8.7HighCVSS 3.1
Recommended action
Within 7 days
High technical severity; prioritise exposed affected systems while verifying vendor guidance.
Fix not verified
Distribution package intelligence
Ubuntu vendor package status
Canonical’s release and source-package findings are shown separately from local repository availability.
1 package state
Repository candidate not checked
A published vendor fix does not prove that a matching update is enabled and installable on a particular asset. Confirm the local package candidate before scheduling remediation.
Ubuntu release
Source package
Vendor state
Fixed version
Evidence
Ubuntu 24.04 LTSnoble · standard archive
freeipa
Under evaluationCanonical reports that the package might be affected and still needs evaluation or fixing.
Structured product status and remediation from the issuing vendor. Product-state explanations are always visible; large lists can be searched or downloaded.
1 current
CVE-2026-13097 · CSAF 2.0 · revision 3 · finalRed Hat Product Securityipa: Privilege escalation via krbCanonicalName manipulation due to realm-unaware uniqueness enforcement in FreeIPA LDAP datastore
107 known affected
The vendor explicitly identifies these products as affected by this CVE.
ipa-client as a component of Red Hat Enterprise Linux 10
ipa-client-common as a component of Red Hat Enterprise Linux 10
ipa-client-encrypted-dns as a component of Red Hat Enterprise Linux 10
ipa-client-epn as a component of Red Hat Enterprise Linux 10
ipa-client-samba as a component of Red Hat Enterprise Linux 10
ipa-common as a component of Red Hat Enterprise Linux 10
ipa-selinux as a component of Red Hat Enterprise Linux 10
ipa-selinux-luna as a component of Red Hat Enterprise Linux 10
ipa-selinux-nfast as a component of Red Hat Enterprise Linux 10
ipa-server as a component of Red Hat Enterprise Linux 10
ipa-server-common as a component of Red Hat Enterprise Linux 10
ipa-server-dns as a component of Red Hat Enterprise Linux 10
Summary
A privilege escalation flaw was found in FreeIPA. The uniqueness constraint enforced on Kerberos principal name attributes in the 389-ds directory server does not properly account for equivalent representations of the same principal name, allowing a user with sufficient LDAP write privileges to create a service principal that impersonates an existing privileged one. This can lead to unauthorized acquisition of Kerberos service tickets for sensitive services, potentially resulting in full domain compromise.
Remediation
Affected
Optional official sources
National CERT insights ?CERT means Computer Emergency Response Team; CSIRT is the closely related term Computer Security Incident Response Team.
Select the national-authority views to include. The exact source language is shown on each matched advisory. Your choice is remembered on this device and encoded in the shareable URL.
Official European source
ENISA European Vulnerability Database
Official EUVD identifiers, advisory evidence and known-exploited context. Missing fields are not treated as evidence of low risk.
1 current
ENISA EUVD identifier
EUVD-2026-63243
No EUVD known-exploited evidence
A privilege escalation flaw was found in FreeIPA. The uniqueness constraint enforced on Kerberos principal name attributes in the 389-ds directory server does not properly account for equivalent representations of the same principal name, allowing a user with sufficient LDAP write privileges to create a service principal that impersonates an existing privileged one. This can lead to unauthorized acquisition of Kerberos service tickets for sensitive services, potentially resulting in full domain compromise.
EUVD state
Present in the current official mapping
Known exploitation
Not present in the current ENISA EUVD known-exploited dataset. This is not proof of no exploitation.
ENISA score
8.7 · CVSS 3.1
Advisory evidence
No linked advisory details stored yet
Recommended actionWithin 7 days
High technical severity; prioritise exposed affected systems while verifying vendor guidance.
Fix not verified
01
What, why and how
A privilege escalation flaw was found in FreeIPA. The uniqueness constraint enforced on Kerberos principal name attributes in the 389-ds directory server does not properly account for equivalent representations of the same principal name, allowing a user with sufficient LDAP write privileges to create a service principal that impersonates an existing privileged one. This can lead to unauthorized acquisition of Kerberos service tickets for sensitive services, potentially resulting in full domain compromise.
What
A privilege escalation flaw was found in FreeIPA. The uniqueness constraint enforced on Kerberos principal name attributes in the 389-ds directory server does not properly account for equivalent representations of the same principal name, allowing a user with sufficient LDAP write privileges to create a service principal that impersonates an existing privileged one. This can lead to unauthorized acquisition of Kerberos service tickets for sensitive services, potentially resulting in full domain compromise.
Why
The product uses a name or reference to access a resource, but the name/reference resolves to a resource that is outside of the intended control sphere.
How
An attacker operating through a network path may attempt exploitation with elevated privileges. If successful, the issue may gain additional privileges.
What
A privilege escalation flaw was found in FreeIPA. The uniqueness constraint enforced on Kerberos principal name attributes in the 389-ds directory server does not properly account for equivalent representations of the same principal name, allowing a user with sufficient LDAP write privileges to create a service principal that impersonates an existing privileged one. This can lead to unauthorized acquisition of Kerberos service tickets for sensitive services, potentially resulting in full domain compromise.
Why
The product uses a name or reference to access a resource, but the name/reference resolves to a resource that is outside of the intended control sphere.
How
An attacker operating through a network path may attempt exploitation with elevated privileges. If successful, the issue may gain additional privileges.
02
Exploit reality and attack path
CVSS severity, EPSS forecast probability, public exploit material and CISA-confirmed exploitation are separate signals.
Observed exploitation ?Confirmed exploitation and public exploit material are separate signals. Attacks can occur without public proof-of-concept or exploit code.No confirmed evidence
No CISA KEV match was present at the last successful refresh. This means no confirmation from that source, not proof of no exploitation.
Public PoC / exploit material ?Confirmed exploitation and public exploit material are separate signals. Attacks can occur without public proof-of-concept or exploit code.None recorded
No exploit-tagged reference or CISA SSVC proof-of-concept state is currently recorded. Research may still exist outside the structured feeds.
Likely attack path
a network path → Use of Incorrectly-Resolved Name or Reference → gain additional privileges
Attack surface
Network
Privileges required
High: elevated access is required
User interaction
None
Attack complexity
Low: no specialised conditions are recorded
Security boundary
Changed: exploitation can affect a different security authority
Weakness ?CWE means Common Weakness Enumeration: a standard category for the underlying weakness.
CWE-706: Use of Incorrectly-Resolved Name or Reference. The product uses a name or reference to access a resource, but the name/reference resolves to a resource that is outside of the intended control sphere.
CVSS vector ?CVSS means Common Vulnerability Scoring System. The vector records the metric values used to calculate technical severity.
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:N
Common Vulnerability Scoring System 3.1: the compact vector below is decoded into plain language.
AVNetworkAttack vector: The vulnerable component can be reached over a network.ACLowAttack complexity: No specialised conditions are required beyond attacker-controlled input.PRHighPrivileges required: The attacker needs elevated or administrative privileges.UINoneUser interaction: No action by another user is required.SChangedScope: The attack can affect a component governed by a different security authority.CHighConfidentiality impact: A successful attack can cause a major loss.IHighIntegrity impact: A successful attack can cause a major loss.ANoneAvailability impact: No direct loss is represented by this metric.
Post-exploitation / living off the land
No specific living-off-the-land technique is confirmed in the structured sources. Monitor normal administration tools for activity inconsistent with the affected service's baseline.
NetworkPrivilege escalationCWE-706
A
Official authority intelligence
Only matched European and national findings are included. Language selectors and unavailable sources are omitted.
ENISA EUVD · EUVD-2026-63243Official EUVD mapping
A privilege escalation flaw was found in FreeIPA. The uniqueness constraint enforced on Kerberos principal name attributes in the 389-ds directory server does not properly account for equivalent representations of the same principal name, allowing a user with sufficient LDAP write privileges to create a service principal that impersonates an existing privileged one. This can lead to unauthorized acquisition of Kerberos service tickets for sensitive services, potentially resulting in full domain compromise.
Operational remediation based on structured source evidence.
Status ?Patch availability is based on structured fixed-version fields and authoritative update references. If no fix is verified, check the vendor advisory before making a change.
Fix not verified
Affected
ipa-client as a component of Red Hat Enterprise Linux 10
ipa-client-common as a component of Red Hat Enterprise Linux 10
ipa-client-encrypted-dns as a component of Red Hat Enterprise Linux 10
ipa-client-epn as a component of Red Hat Enterprise Linux 10
ipa-client-samba as a component of Red Hat Enterprise Linux 10
ipa-common as a component of Red Hat Enterprise Linux 10
ipa-selinux as a component of Red Hat Enterprise Linux 10
ipa-selinux-luna as a component of Red Hat Enterprise Linux 10
ipa-selinux-nfast as a component of Red Hat Enterprise Linux 10
ipa-server as a component of Red Hat Enterprise Linux 10
ipa-server-common as a component of Red Hat Enterprise Linux 10
ipa-server-dns as a component of Red Hat Enterprise Linux 10
ipa-server-encrypted-dns as a component of Red Hat Enterprise Linux 10
ipa-server-trust-ad as a component of Red Hat Enterprise Linux 10
ipa.src as a component of Red Hat Enterprise Linux 10
python3-ipaclient as a component of Red Hat Enterprise Linux 10
python3-ipalib as a component of Red Hat Enterprise Linux 10
python3-ipaserver as a component of Red Hat Enterprise Linux 10
python3-ipatests as a component of Red Hat Enterprise Linux 10
ipa-admintools as a component of Red Hat Enterprise Linux 6
ipa-client as a component of Red Hat Enterprise Linux 6
ipa-python as a component of Red Hat Enterprise Linux 6
ipa-server as a component of Red Hat Enterprise Linux 6
ipa-server-selinux as a component of Red Hat Enterprise Linux 6
ipa-server-trust-ad as a component of Red Hat Enterprise Linux 6
ipa.src as a component of Red Hat Enterprise Linux 6
ipa-admintools as a component of Red Hat Enterprise Linux 7
ipa-client as a component of Red Hat Enterprise Linux 7
ipa-client-common as a component of Red Hat Enterprise Linux 7
ipa-common as a component of Red Hat Enterprise Linux 7
and 77 more
Fixed
No fixed version is explicitly recorded in the structured CVE data.
Action
No verified patch reference is present in the current structured sources. Check the vendor advisory before making a change.
Workaround
No verified workaround is recorded. If business-safe, reduce exposure to the affected interface and allow only trusted sources until authoritative guidance is available.
04
Evidence and provenance
Published 20 Aug 2026 · Last source change 8 Sept 2026, 10:49 UTC · CWE-706 · Use of Incorrectly-Resolved Name or Reference
CVE recordCVE.org · 5.2
CVSS sourceCNA
EPSS source ?The date BlackTree first stored a score for this CVE from the daily FIRST EPSS feed.FIRST · tracked since 2026-08-23
European sourceENISA EUVD · EUVD-2026-63243
Product sourceVendor CSAF · Red Hat Product Security
Remediation sourceVendor CSAF · Red Hat Product Security
CWE sourceCNA
NVD statusNVD modified after enrichment
Core structured fields are present and their contributing authorities are shown above.
Affected versionsThe structured affected or fixed version information changed.
Before
ipa-client as a component of Red Hat Enterprise Linux 10; ipa-client-common as a component of Red Hat Enterprise Linux 10; ipa-client-encrypted-dns as a component of Red Hat Enterprise Linux 10; ipa-client-epn as a component of Red Hat Enterprise Linux 10; ipa-client-samba as a component of Red Hat Enterprise Linux 10; ipa-common as a component of Red Hat Enterprise Linux 10; ipa-selinux as a component of Red Hat Enterprise Linux 10; ipa-selinux-luna as a component of Red Hat Enterprise Linux 10; ipa-selinux-nfast as a component of Red Hat Enterprise Linux 10; ipa-server as a component of Red Hat Enterprise Linux 10; ipa-server-common as a component of Red Hat Enterprise Linux 10; ipa-server-dns as a component of Red Hat Enterprise Linux 10; ipa-server-encrypted-dns as a component of Red Hat Enterprise Linux 10; ipa-server-trust-ad as a component of Red Hat Enterprise Linux 10; ipa.src as a component of Red Hat Enterprise Linux 10; python3-ipaclient as a component of Red Hat Enterprise Linux 10; python3-ipalib as a component of Red Hat Enterprise Linux 10; python3-ipaserver as a component of Red Hat Enterprise Linux 10; python3-ipatests as a component of Red Hat Enterprise Linux 10; ipa-admintools as a component of Red Hat Enterprise Linux 6; ipa-client as a component of Red Hat Enterprise Linux 6; ipa-python as a component of Red Hat Enterprise Linux 6; ipa-server as a component of Red Hat Enterprise Linux 6; ipa-server-selinux as a component of Red Hat Enterprise Linux 6; ipa-server-trust-ad as a component of Red Hat Enterprise Linux 6; ipa.src as a component of Red Hat Enterprise Linux 6; ipa-admintools as a component of Red Hat Enterprise Linux 7; ipa-client as a component of Red Hat Enterprise Linux 7; ipa-client-common as a component of Red Hat Enterprise Linux 7; ipa-common as a component of Red Hat Enterprise Linux 7; and 45 more
After
ipa-client as a component of Red Hat Enterprise Linux 10; ipa-client-common as a component of Red Hat Enterprise Linux 10; ipa-client-encrypted-dns as a component of Red Hat Enterprise Linux 10; ipa-client-epn as a component of Red Hat Enterprise Linux 10; ipa-client-samba as a component of Red Hat Enterprise Linux 10; ipa-common as a component of Red Hat Enterprise Linux 10; ipa-selinux as a component of Red Hat Enterprise Linux 10; ipa-selinux-luna as a component of Red Hat Enterprise Linux 10; ipa-selinux-nfast as a component of Red Hat Enterprise Linux 10; ipa-server as a component of Red Hat Enterprise Linux 10; ipa-server-common as a component of Red Hat Enterprise Linux 10; ipa-server-dns as a component of Red Hat Enterprise Linux 10; ipa-server-encrypted-dns as a component of Red Hat Enterprise Linux 10; ipa-server-trust-ad as a component of Red Hat Enterprise Linux 10; ipa.src as a component of Red Hat Enterprise Linux 10; python3-ipaclient as a component of Red Hat Enterprise Linux 10; python3-ipalib as a component of Red Hat Enterprise Linux 10; python3-ipaserver as a component of Red Hat Enterprise Linux 10; python3-ipatests as a component of Red Hat Enterprise Linux 10; ipa-admintools as a component of Red Hat Enterprise Linux 6; ipa-client as a component of Red Hat Enterprise Linux 6; ipa-python as a component of Red Hat Enterprise Linux 6; ipa-server as a component of Red Hat Enterprise Linux 6; ipa-server-selinux as a component of Red Hat Enterprise Linux 6; ipa-server-trust-ad as a component of Red Hat Enterprise Linux 6; ipa.src as a component of Red Hat Enterprise Linux 6; ipa-admintools as a component of Red Hat Enterprise Linux 7; ipa-client as a component of Red Hat Enterprise Linux 7; ipa-client-common as a component of Red Hat Enterprise Linux 7; ipa-common as a component of Red Hat Enterprise Linux 7; and 77 more
Technical terms and abbreviations used in this report
CVE
Common Vulnerabilities and Exposures: the public identifier for one disclosed vulnerability.
CVSS
Common Vulnerability Scoring System: a technical severity framework; it is not patching priority by itself.
EPSS
Exploit Prediction Scoring System: FIRST's estimate of the probability that exploitation activity will be observed in the next 30 days; it is a forecast, not confirmation.
CWE
Common Weakness Enumeration: the standard category describing the underlying software or hardware weakness.
CNA
CVE Numbering Authority: an organisation authorised to assign and publish CVE records.
CISA ADP
Cybersecurity and Infrastructure Security Agency Authorized Data Publisher: structured enrichment added to a CVE record.
NVD
National Vulnerability Database: NIST's enrichment service for CVE records.
CERT / CSIRT
A computer security incident response team that publishes warnings or coordinates incident response.
PoC
Proof of concept: public material that demonstrates or helps reproduce exploitation.
CSAF
Common Security Advisory Framework: a machine-readable format for security advisories.
LoTL
Living off the land: abuse of legitimate tools or system functions during an attack.
CVE-2026-13097: Ipa: privilege escalation via krbcanonicalname manipulation due to realm-unaware uniqueness enforcement in freeipa ldap datastore | BlackTree
