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CVE-2026-1933— Samba: missing access check on reparse point operations

CVSS 7.1 · High EPSS 0.03% · P10
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I. Basic Information for CVE-2026-1933

Vulnerability Information
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Vulnerability Title
Samba: missing access check on reparse point operations
Source: NVD (National Vulnerability Database)
Vulnerability Description
A flaw was found in Samba’s handling of NTFS-style reparse points on shares configured with read only = yes. Due to missing SMB-layer access checks, authenticated users with underlying filesystem write permissions may create or delete reparse point metadata through SMB operations even on read-only exports. This could allow modification of SMB-visible file behavior, including converting files into symbolic links or other reparse point types.
Source: NVD (National Vulnerability Database)
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:H
Source: NVD (National Vulnerability Database)
Vulnerability Type
访问控制不恰当
Source: NVD (National Vulnerability Database)
Vulnerability Title
Samba 访问控制错误漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Samba是Samba开源的一个适用于 Linux 和 Unix 的标准 Windows 互操作性程序套件。 Samba存在访问控制错误漏洞，该漏洞源于处理NTFS风格重解析点时缺少SMB层访问检查，可能导致经过身份验证的用户在只读导出上创建或删除重解析点元数据，包括将文件转换为符号链接或其他重解析点类型。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

VendorProductAffected VersionsCPESubscribe
Red HatRed Hat Enterprise Linux 10-cpe:/o:redhat:enterprise_linux:10
Red HatRed Hat Enterprise Linux 6-cpe:/o:redhat:enterprise_linux:6
Red HatRed Hat Enterprise Linux 6-cpe:/o:redhat:enterprise_linux:6
Red HatRed Hat Enterprise Linux 7-cpe:/o:redhat:enterprise_linux:7
Red HatRed Hat Enterprise Linux 8-cpe:/o:redhat:enterprise_linux:8
Red HatRed Hat Enterprise Linux 9-cpe:/o:redhat:enterprise_linux:9
Red HatRed Hat OpenShift Container Platform 4-cpe:/a:redhat:openshift:4

II. Public POCs for CVE-2026-1933

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III. Intelligence Information for CVE-2026-1933

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Patches & Fixes for CVE-2026-1933 (1)

Vendor Advisories for CVE-2026-1933 (2)

Same Patch Batch · Red Hat · 2026-05-27 · 5 CVEs total

CVE-2026-30128.0 HIGHSamba: group policy certificate enrollment uses http:// without validation
CVE-2026-97046.8 MEDIUMKeycloak: keycloak: privilege escalation due to oversized subject_token jwt
CVE-2026-23406.5 MEDIUMSamba: vfs_worm does not block directory modification
CVE-2026-96894.2 MEDIUMKeycloak: org.keycloak.protocol.oidc: http parameter pollution in oidc redirect uri allows

IV. Related Vulnerabilities

Same product: Red Hat Enterprise Linux 10
Same vendor: Red Hat
Same weakness: CWE-284

V. Comments for CVE-2026-1933

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