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AEGLIX vulnerability intelligence

CVE-2026-4408

CRITICAL · CVSS 9.0 · Modified

Published: 2026-05-28 · Updated: 2026-10-26 · Source: NVD

Stored catalog record

Source record retrieved 2026-10-28T10:25:20.652021+00:00. Scheduled imports handle updates; this page does not assert that the provider was queried just now.

Vulnerability overview

A flaw was found in Samba. A remote attacker can exploit a misconfiguration in Samba file servers and classic domain controllers that use the "check password script" feature. If this script is configured with the %u substitution character, the client-controlled username is passed without proper escaping of shell meta-characters. This vulnerability allows an attacker to achieve remote command execution on the affected system. This issue primarily affects non-standard configurations where the "check password script" is used with %u and the samba-dcerpcd service is started as a system service.

Patch review priority

Critical technical severity

  • CVSS is at least 9.0; exploitation is not established by severity alone.

FIRST EPSS: 2.50% · percentile 84.6 · score date 2026-10-27.

EPSS estimates probability of exploitation in the next 30 days. It does not measure your exposure or prove exploitation. The elevated threshold is 10%; CISA KEV takes precedence. About FIRST EPSS ↗

Severity and scoring

CVSS score
9.0 · CRITICAL
CVSS version
3.1
CVSS vector
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:H
Weaknesses
CWE-78

CVSS measures technical severity; it does not establish whether this vulnerability is being exploited in your environment.

Known exploitation and remediation

Not listed in the CISA catalog retrieved for this record. This does not establish that exploitation has not occurred.

Verify affected versions and patch availability in the vendor advisory before making changes.

Affected products and versions

  • cpe:2.3:a:redhat:openshift_container_platform:4.0:*:*:*:*:*:*:*

  • cpe:2.3:a:samba:samba:*:*:*:*:*:*:*:*

    From (inclusive): 4.1.0

    Before (exclusive): 4.21.0

  • cpe:2.3:o:redhat:enterprise_linux:6.0:*:*:*:*:*:*:*

  • cpe:2.3:o:redhat:enterprise_linux:7.0:*:*:*:*:*:*:*

  • cpe:2.3:o:redhat:enterprise_linux:9.0:*:*:*:*:*:*:*

These are NVD CPE applicability entries. Some products depend on configuration conditions; consult the official record to confirm applicability.

Advisories and references

Explore official sources

Read the official NVD record ↗

Explore the CISA catalog ↗

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