8.1

CVE-2026-104048: fedoraproject sssd Comparison Using Wrong Factors

CVSS: 8.1v3.1HighAnalyzed
AliasesUBUNTU-CVE-2026-104048DEBIAN-CVE-2026-104048
Published 06-10-2026Last modified 07-10-2026
Open JSON

Vulnerability summary

CVE-2026-104048 is a high (CVSS 8.1) Comparison Using Wrong Factors vulnerability in fedoraproject sssd. EPSS estimates a 0.28% chance of exploitation in the next 30 days, higher than 19% of scored vulnerabilities. 1 public exploit is recorded.

Overall risk
42/100
0100
Medium · default modelHow is this calculated?
CVSS score
8.1/10
010
High · v3.1 (NVD)
EPSS score
0.28%
0%100%
Low · Change unavailable
KEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits1reference

Timeline

  1. 06-10-2026
    PublishedVulnerability first disclosed.
  2. 07-10-2026
    Last modifiedVulnerability information updated.

Description

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 metrics

4 scores · 4 sources · 1 version

EPSS trend

Probability

0.28%

Chance of exploitation in the next 30 days

Percentile

19%

Versus all other CVEs

30-day change

Change unavailable

Change unavailable

07-10-202621-10-2026
EPSS score
0.28%

Known exploited

Compare KEV catalogs

Not in any of the 3 tracked catalogs.

Public exploits

1 found
  • referenceUnverified

    Exploit Reference (bugzilla.redhat.com)

    Maturity: unknown

Weaknesses

CWE · root cause

Affected systems

Redhat2 products
Debian1 product
  • sssdAll versions (No fix recorded)
Fedoraproject1 product
Ubuntu1 product
  • sssdAll versions (No fix recorded)

4 vendors · 5 products

References

5 links