PT-2026-24331 · Microsoft · Windows

Guillaume André + 1 · Publicado 2026-03-10 · Atualizado 2026-06-15 · CVE-2026-26128

Positive Technologies (AI Summary)

CVSS v3.1

7.8

Alta

Vetor base

AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Name of the Vulnerable Software and Affected Versions Windows SMB Server (affected versions not specified)

Description An improper authentication mechanism exists in Windows SMB Server. Successful exploitation could allow an attacker to elevate privileges locally. The issue relates to flaws in the authentication process.

Recommendations At the moment, there is no information about a newer version that contains a fix for this vulnerability.

Improper Authentication

Enumeração de Fraquezas

CWE-287

Identificadores relacionados

BDU:2026-02973

CVE-2026-26128

Produtos afetados

Windows

Referências · 16

• https://msrc.microsoft.com/update-guide/en-US/advisory/CVE-2026-26128 · Aviso do Fabricante
• https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-26128 · Aviso do Fabricante
• http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2026-26128 · Nota de Segurança
• https://t.me/cveNotify/164731 · Publicação no Telegram
• https://vicarius.io/vsociety/posts/cve-2026-26128-mitigation-script-improper-authentication-in-windows-smb-server · Nota
• https://nvd.nist.gov/vuln/detail/CVE-2026-26128 · Nota de Segurança
• https://vicarius.io/vsociety/posts/cve-2026-26128-detection-script-improper-authentication-in-windows-smb-server · Nota
• https://t.me/avleonovcom/1637 · Publicação no Telegram
• https://synacktiv.com/en/publications/bypassing-windows-authentication-reflection-mitigations-for-system-shells-part-1 · Nota
• https://bdu.fstec.ru/vul/2026-02973 · Nota de Segurança
• https://twitter.com/ptdbugs/status/2066491737615241495 · Publicação no Twitter
• https://reddit.com/r/CVEWatch/comments/1t58epd/top_10_trending_cves_06052026 · Publicação no Reddit
• https://reddit.com/r/CVEWatch/comments/1t4b01f/top_10_trending_cves_05052026 · Publicação no Reddit
• https://reddit.com/r/CVEWatch/comments/1t3d9oz/top_10_trending_cves_04052026 · Publicação no Reddit
• https://twitter.com/CVEnew/status/2033361130756702714 · Publicação no Twitter