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SSSD CVE-2026-104048

| EUVDEUVD-2026-93942 HIGH
Comparison Using Wrong Factors (CWE-1025)
2026-10-06 secalert@redhat.com GHSA-474r-m56w-5qgh
8.1
CVSS 3.1 · NVD
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Severity by source

Vendor (redhat) PRIMARY
MEDIUM
qualitative
NVD
8.1 HIGH
AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N
vuln.today AI
8.1 HIGH

Network-reachable service login (AV:N) by an authenticated trusted-domain user (PR:L); bypass grants unauthorized read/modify access (C:H/I:H) but no availability loss (A:N).

3.1 AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N
4.0 AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N

Primary rating from Vendor (redhat).

CVSS VectorNVD

Attack Vector
Network
Attack Complexity
Low
Privileges Required
Low
User Interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
None

Lifecycle Timeline

7
Analysis Updated
Oct 09, 2026 - 13:13 vuln.today
v2 (cvss_changed)
Re-analysis Queued
Oct 09, 2026 - 13:07 vuln.today
cvss_changed
Severity Changed
Oct 09, 2026 - 13:07 NVD
MEDIUM HIGH
CVSS changed
Oct 09, 2026 - 13:07 NVD
6.8 (MEDIUM) 8.1 (HIGH)
Metadata Corrected
Oct 06, 2026 - 21:40 vuln.today
tag: Sssd added
Analysis Generated
Oct 06, 2026 - 21:03 vuln.today
CVE Published
Oct 06, 2026 - 20:17 nvd
MEDIUM 6.8

DescriptionNVD

A flaw was found in SSSD. In trust-enabled identity management environments, SSSD evaluates Host-Based Access Control (HBAC) rules by stripping domain qualifiers and comparing only short usernames. An authenticated user in a trusted domain who shares the same username as an authorized local account can bypass access policies and gain unauthorized access to protected services or hosts.

AnalysisAI

Access-control bypass in SSSD lets an already-authenticated user from a trusted identity domain reach hosts and services that Host-Based Access Control (HBAC) rules are supposed to protect. Because SSSD strips the domain qualifier and compares only short usernames during HBAC evaluation, a trusted-domain user whose short name collides with an authorized local account is silently granted that local account's access. …

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Attack ChainAIDerived

Hypothetical attack flow derived from CVE metadata

Access
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Delivery
technique details hidden
Exploit
technique details hidden
Execution
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Impact
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Vulnerability AssessmentAI

Exploitation Exploitation requires a trust-enabled identity-management environment (FreeIPA/IdM with a configured domain trust, e.g., to Active Directory) where HBAC rules govern access. … Additional conditions and limiting factors are described in the full assessment.
Risk Assessment This is a credible, moderately-high-priority access-control flaw but not an emergency. … Full risk analysis with EPSS, KEV, and SSVC signal comparison available after sign-in.
Exploit Scenario Full exploit scenario with step-by-step reproduction available after sign-in.
Remediation No vendor-released patch version was confirmed in the available data at time of analysis, so the authoritative fix guidance and the exact patched sssd package version must be taken from the Red Hat CVE page (https://access.redhat.com/security/cve/CVE-2026-104048) and Bugzilla 2478613 (https://bugzilla.redhat.com/show_bug.cgi?id=2478613); apply the updated sssd packages for RHEL 7/8/9/10 and the OpenShift Container Platform 4.x images as soon as errata are published, then restart sssd on each affected host. … Detailed patch versions, workarounds, and compensating controls in full report.

Recommended ActionAI

No vendor-released patch identified at time of analysis for CVE-2026-104048 in SSSD; monitor vendor advisories for FreeIPA/IdM and SSSD for an update. …

Sign in for detailed remediation steps and compensating controls.

Threat intelligence, references, and detailed analysis are available after sign-in.

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CVE-2026-104048 vulnerability details – vuln.today

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