Severity by source
AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Samba command-injection flaws historically require an authenticated SMB session to reach vulnerable helpers, so PR:L over PR:N; network reachable, low complexity, full CIA impact as smbd typically runs privileged.
Primary rating from NVD.
CVSS VectorNVD
Lifecycle Timeline
8DescriptionNVD
Alpine Linux: samba fixed in 4.23.8-r0
AnalysisAI
Command injection in Samba (CWE-78) carries a critical CVSS 9.8 (AV:N/AC:L/PR:N/UI:N) and is fixed in Alpine Linux package samba 4.23.8-r0, with Red Hat shipping errata RHSA-2026:22644, 22963, 25049, and 25979 for Enterprise Linux 6/7/9 and OpenShift Container Platform 4.0. The flaw allows remote attackers to inject operating-system commands against vulnerable Samba deployments, yielding full confidentiality, integrity, and availability impact. …
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Attack ChainAIDerived
Hypothetical attack flow derived from CVE metadata
Vulnerability AssessmentAI
| Exploitation | Based on the supplied CVSS vector (AV:N/AC:L/PR:N/UI:N), exploitation requires only network reachability to the Samba service (typically TCP 445, also 139) with no authentication and no user interaction against default Samba deployments on Alpine, RHEL 6/7/9, and OpenShift Container Platform 4.0. … Additional conditions and limiting factors are described in the full assessment. |
| Risk Assessment | Signals are mixed and require honest interpretation. … 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 | On Alpine Linux, upgrade the samba package to 4.23.8-r0 or later via apk; on Red Hat Enterprise Linux 6, 7, and 9 and OpenShift Container Platform 4.0, apply the vendor-released patches from RHSA-2026:22644, RHSA-2026:22963, RHSA-2026:25049, and RHSA-2026:25979 (linked from https://access.redhat.com/security/cve/CVE-2026-4408), and on other distributions install the patched upstream Samba build referenced in Samba Bugzilla 16034. … Detailed patch versions, workarounds, and compensating controls in full report. |
Recommended ActionAI
Within 24 hours: Inventory all Samba deployments and document current software versions. …
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Same weakness CWE-78 – OS Command Injection
View allSame technique Command Injection
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External POC / Exploit Code
Leaving vuln.today
EUVD-2026-32741
GHSA-jg8v-92xc-cx65