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CERT-FR advisory CERTFR-2026-AVI-1400: Samba vulnerability CVE-2026-109411 allows data compromise and security policy bypass

1 fonte(s) · 1 atualização(ões) · publicado 27/10/2026 21:00 · coletado há 2 dias

CERT-FR published advisory CERTFR-2026-AVI-1400 on 28 October 2026 about a vulnerability in Samba, tracked as CVE-2026-109411. An attacker can exploit it to breach data confidentiality, breach data integrity and bypass the security policy. The advisory relays the Samba security bulletin of 23 October 2026. It gives no details on the attack vector, exploitability, authentication requirements or in-the-wild activity.

Entenda a falha

A vulnerabilidade

CVE-2026-109411 is a vulnerability in Samba that, according to CERT-FR, lets an attacker breach data confidentiality, breach data integrity and bypass the security policy. Versions earlier than 4.25.1 are affected, and the fix is to upgrade to 4.25.1 or later. The advisory does not name the affected component, the network reach or authentication an attacker needs, or whether any configuration is required.

Como funciona

The sources do not describe how the vulnerable process works. The CERT-FR advisory only lists the impacts and refers readers to the Samba security bulletin for details. The input that reaches the software and the step where it fails are not stated.

Por que é vulnerável

The root cause is not given in the available articles. The advisory says only that the flaw leads to confidentiality and integrity breaches and a security policy bypass, and that fixes are in the Samba bulletin. What the fix changes in the code is not described.

Como foi descoberta

The articles do not say who found the flaw or how. Samba published its security bulletin for CVE-2026-109411 on 23 October 2026, and CERT-FR relayed it in advisory CERTFR-2026-AVI-1400 on 28 October 2026. The advisory mentions no exploitation in the wild.

Explicação gerada por IA a partir da matéria e dos artigos, em 30/10/2026 14:18.

Detalhes técnicos

  • Affected: Samba versions prior to 4.25.1.
  • Impact: confidentiality breach, integrity breach and security policy bypass. The advisory does not describe the underlying flaw.

Remediação

  • Apply the fixes described in the Samba security bulletin for CVE-2026-109411 (samba.org/samba/security/CVE-2026-109411.html), including an upgrade to version 4.25.1 or later.

Linha do tempo

  1. cert.cyber.gouv.fr ↗ · pub. 27/10/2026 21:00 · coletado 30/10 14:01 primeiro registro

    CERT-FR advisory CERTFR-2026-AVI-1400: Samba vulnerability CVE-2026-109411 allows data compromise and security policy bypass

    ler a análise desta fonte

    CERT-FR published advisory CERTFR-2026-AVI-1400 on 28 October 2026 about a vulnerability in Samba, tracked as CVE-2026-109411. An attacker can exploit it to breach data confidentiality, breach data integrity and bypass the security policy. The advisory relays the Samba security bulletin of 23 October 2026. It gives no details on the attack vector, exploitability, authentication requirements or in-the-wild activity.

    Technical Details

    • Affected: Samba versions prior to 4.25.1.
    • Impact: confidentiality breach, integrity breach and security policy bypass. The advisory does not describe the underlying flaw.

    Remediation

    • Apply the fixes described in the Samba security bulletin for CVE-2026-109411 (samba.org/samba/security/CVE-2026-109411.html), including an upgrade to version 4.25.1 or later.