CVE-2026-104048

highpriority · track · 32EPSS 0.003 · 23 %ileUS

grimoire priorityP2 · Scheduled

Exploitable?

—

no known exploitation

Likely / severe?

0.30% (23rd) EPSS

CVSS 8.1 · high

Is it mine?

6 products

Check your exposure

Who says so?

1 sources

nvd

EPSS · scored 2026-10-27

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.

cvss

Technical severity, 0–10. One row per scoring source.

8.1

010

base score 0–10 · higher = more severe · hover a vector to decode⚠ sources disagree · medium–high · 6.8–8.1

v3.18.1highCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:Nprimary · NVD / NIST USexploitability 2.8 · impact 5.2

v3.16.8mediumCVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:Nprimary · secalert@redhat.com USexploitability 1.6 · impact 5.2

v3.17.4highCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N/E:Usecondary · CVSS-BT (t0sche)

ssvc

A stakeholder decision — act, attend, or track — from exploitation and impact.

Exploitation: poc · Automatable: no · Technical Impact: totalcoordinatorcisa_ssvcUS

weaknesses

The CWE weakness classes this flaw belongs to.

CWE-1025US

affected products (6)

Products and version ranges known to be affected.

fedoraproject sssd= 2.12.0nvdUScpe:2.3:a:fedoraproject:sssd:*:*:*:*:*:*:*:*
redhat enterprise linux= 10.0nvdUScpe:2.3:o:redhat:enterprise_linux:*:*:*:*:*:*:*:*
redhat enterprise linux= 7.0nvdUScpe:2.3:o:redhat:enterprise_linux:*:*:*:*:*:*:*:*
redhat enterprise linux= 8.0nvdUScpe:2.3:o:redhat:enterprise_linux:*:*:*:*:*:*:*:*
redhat enterprise linux= 9.0nvdUScpe:2.3:o:redhat:enterprise_linux:*:*:*:*:*:*:*:*
redhat openshift container platform= 4.0nvdUScpe:2.3:a:redhat:openshift_container_platform:*:*:*:*:*:*:*:*

sources

Which sources assert this record, and when.

nvd NVD CVE.org MITRE

published 2026-10-06modified 2026-10-09

references (2) nvd

External citations — patches, advisories, analysis.

https://access.redhat.com/security/cve/CVE-2026-104048Vendor AdvisoryIssue Tracking
https://bugzilla.redhat.com/show_bug.cgi?id=2478613ExploitIssue TrackingMitigationVendor Advisory

scry

Attackers weaponise vulnerabilities like this against internet-exposed services. See what is exposed on your perimeter with a free passive scan.

Free scan