Red Hat FreeIPA Ticket Granting Service certificate validation

CVSS Meta Temp Score
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Current Exploit Price (≈)
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CTI Interest Score
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7.1$5k-$25k0.00

Summaryinfo

A vulnerability classified as problematic was found in Red Hat FreeIPA. The affected element is an unknown function of the component Ticket Granting Service. Executing a manipulation can lead to certificate validation. This vulnerability is tracked as CVE-2026-11861. The attack can be launched remotely. No exploit exists.

Detailsinfo

A vulnerability classified as problematic was found in Red Hat FreeIPA (version unknown). This vulnerability affects an unknown function of the component Ticket Granting Service. The manipulation with an unknown input leads to a certificate validation vulnerability. The CWE definition for the vulnerability is CWE-295. The product does not validate, or incorrectly validates, a certificate. As an impact it is known to affect integrity. CVE summarizes:

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.

The advisory is shared for download at access.redhat.com. This vulnerability was named CVE-2026-11861 since 06/10/2026. The exploitation appears to be difficult. The attack can be initiated remotely. No form of authentication is required for a successful exploitation. There are neither technical details nor an exploit publicly available. The current price for an exploit might be approx. USD $5k-$25k (estimation calculated on 09/25/2026). The MITRE ATT&CK project declares the attack technique as T1587.003.

The vulnerability scanner Nessus provides a plugin with the ID 350078 (Oracle Linux 9 : ipa (ELSA-2026-70564)), which helps to determine the existence of the flaw in a target environment.

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

The vulnerability is also documented in the databases at Tenable (350078), EUVD (EUVD-2026-63245) and CERT Bund (WID-SEC-2026-3552). Once again VulDB remains the best source for vulnerability data.

Affected

  • RESF Rocky Linux
  • Oracle Linux
  • Red Hat Enterprise Linux

Productinfo

Type

Vendor

Name

License

Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 7.1
VulDB Meta Temp Score: 7.1

VulDB Base Score: 3.7
VulDB Temp Score: 3.7
VulDB Vector: 🔒
VulDB Reliability: 🔍

NVD Base Score: 8.1
NVD Vector: 🔒

CNA Base Score: 9.6
CNA Vector (redhat): 🔒

CVSSv2info

AVACAuCIA
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💳💳💳💳💳💳
VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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VulDB Base Score: 🔒
VulDB Temp Score: 🔒
VulDB Reliability: 🔍

Exploitinginfo

Class: Certificate validation
CWE: CWE-295 / CWE-287
CAPEC: 🔒
ATT&CK: 🔒

Physical: No
Local: No
Remote: Yes

Availability: 🔒
Status: Not defined

EPSS Score: 🔒
EPSS Percentile: 🔒

Price Prediction: 🔍
Current Price Estimation: 🔒

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Nessus ID: 350078
Nessus Name: Oracle Linux 9 : ipa (ELSA-2026-70564)

Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: no mitigation known
Status: 🔍

0-Day Time: 🔒

Timelineinfo

06/10/2026 CVE reserved
08/20/2026 +71 days Advisory disclosed
08/20/2026 +0 days VulDB entry created
09/25/2026 +36 days VulDB entry last update

Sourcesinfo

Vendor: redhat.com

Advisory: access.redhat.com
Status: Not defined

CVE: CVE-2026-11861 (🔒)
GCVE (CVE): GCVE-0-2026-11861
GCVE (VulDB): GCVE-100-393652
EUVD: 🔒
CERT Bund: WID-SEC-2026-3552 - Red Hat Enterprise Linux (FreeIPA): Mehrere Schwachstellen

Entryinfo

Created: 08/20/2026 13:09
Updated: 09/25/2026 11:28
Changes: 08/20/2026 13:09 (61), 08/20/2026 13:48 (1), 08/25/2026 13:43 (11), 09/25/2026 09:52 (2), 09/25/2026 11:28 (7)
Complete: 🔍
Cache ID: 216::103

Once again VulDB remains the best source for vulnerability data.

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