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.

The version of FreeBSD installed on the remote host is prior to tested version. It is, therefore, affected by multiple vulnerabilities as referenced in the 9736fef3-ada6-11f1-a655-3497f65b111b advisory.

    The FreeIPA project reports:

Tenable has extracted the preceding description block directly from the FreeBSD security advisory.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

The remote Fedora 43 host has a package installed that is affected by multiple vulnerabilities as referenced in the FEDORA-2026-3a48220f1f advisory.

    Upstream security release FreeIPA 4.13.3

    Release notes: https://www.freeipa.org/release-notes/4-13-3.html

Tenable has extracted the preceding description block directly from the Fedora security advisory.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

It is, therefore, affected by multiple vulnerabilities as referenced in the ALAS2-2026-3877 advisory.

    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. (CVE-2026-11861)

    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.
    (CVE-2026-13097)

Tenable has extracted the preceding description block directly from the tested product security advisory.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

The remote Fedora 44 host has packages installed that are affected by multiple vulnerabilities as referenced in the FEDORA-2026-903d904933 advisory.

    Update to Samba 4.24.6 (and rebuild of freeipa)



    ----

    This update contains no changes; it exists purely to keep the Fedora 44 freeipa package higher-versioned     than the Fedora 43 package. If it is not, upgrades of FreeIPA from Fedora 43 to 44 fail.


Tenable has extracted the preceding description block directly from the Fedora security advisory.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available.

  - 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.
    (CVE-2026-13097)

Note that Nessus relies on the presence of the package as reported by the vendor.

ID	Name	Product	Family	Type	Severity
344816	FreeBSD : FreeIPA -- multiple vulnerabilities (9736fef3-ada6-11f1-a655-3497f65b111b)	Nessus	FreeBSD Local Security Checks	Local	high
342751	Fedora 43 : freeipa (2026-3a48220f1f)	Nessus	Fedora Local Security Checks	Local	high
339665	Amazon Linux 2 : ipa, --advisory ALAS2-2026-3877 (ALAS-2026-3877)	Nessus	Amazon Linux Local Security Checks	Local	high
339191	Fedora 44 : freeipa / samba (2026-903d904933)	Nessus	Fedora Local Security Checks	Local	high
338271	Linux Distros Unpatched Vulnerability : CVE-2026-13097	Nessus	Misc.	Local	high

Detections

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CVE-2026-13097

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Tenable Plugins

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