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CVE-2026-1933— Samba 访问控制错误漏洞

一分钟漏洞结论

影响对象
Red Hat Red Hat Enterprise Linux 10
利用判断
尚无明确在野利用证据,仍需结合暴露面评估
建议动作
优先检查厂商安全公告和参考链接中的修复版本;无法立即升级时,限制受影响服务暴露并加强监测。

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。

CVSS 7.1 · High EPSS 0.86% · P57

影响版本矩阵 28

厂商产品 版本范围状态
Red Hat Red Hat Enterprise Linux 10 0:4.23.5-109.el10_2< * unaffected
Red Hat Red Hat Enterprise Linux 10.0 Extended Update Support 0:4.21.3-114.el10_0.1< * unaffected
Red Hat Red Hat Enterprise Linux 6 全部 unknown
全部 unknown
Red Hat Red Hat Enterprise Linux 7 全部 affected
Red Hat Red Hat Enterprise Linux 8 0:4.19.4-16.el8_10< * unaffected
0:4.19.4-16.el8_10< * unaffected
Red Hat Red Hat Enterprise Linux 8.6 Advanced Mission Critical Update Support 0:4.15.5-16.el8_6.1< * unaffected
Red Hat Red Hat Enterprise Linux 8.6 Extended Update Support Long-Life Add-On 0:4.15.5-16.el8_6.1< * unaffected
Red Hat Red Hat Enterprise Linux 8.8 Telecommunications Update Service 0:4.17.5-7.el8_8.1< * unaffected
Red Hat Red Hat Enterprise Linux 8.8 Update Services for SAP Solutions 0:4.17.5-7.el8_8.1< * unaffected
Red Hat Red Hat Enterprise Linux 9 0:4.23.5-10.el9_8< * unaffected
0:4.23.5-10.el9_8< * unaffected
Red Hat Red Hat Enterprise Linux 9.2 Update Services for SAP Solutions 0:4.17.5-105.el9_2.5< * unaffected
Red Hat Red Hat Enterprise Linux 9.4 Update Services for SAP Solutions 0:4.19.4-105.el9_4.4< * unaffected
Red Hat Red Hat Enterprise Linux 9.6 Extended Update Support 0:4.21.3-14.el9_6.1< * unaffected
Red Hat Red Hat OpenShift Container Platform 4 全部 affected
Red Hat Red Hat OpenShift Container Platform 4.12 412.86.202608241157-0< * unaffected
Red Hat Red Hat OpenShift Container Platform 4.13 413.92.202609080414-0< * unaffected
Red Hat Red Hat OpenShift Container Platform 4.14 414.92.202608172040-0< * unaffected
Red Hat Red Hat OpenShift Container Platform 4.15 415.92.202608180329-0< * unaffected
Red Hat Red Hat OpenShift Container Platform 4.16 416.94.202608150307-0< * unaffected
Red Hat Red Hat OpenShift Container Platform 4.17 417.94.202608250221-0< * unaffected
Red Hat Red Hat OpenShift Container Platform 4.18 418.94.202608142238-0< * unaffected
Red Hat Red Hat OpenShift Container Platform 4.19 4.19.9.6.202606241344-0< * unaffected
Red Hat Red Hat OpenShift Container Platform 4.20 4.20.9.6.202608121719-0< * unaffected
Red Hat Red Hat OpenShift Container Platform 4.21 4.21.9.6.202608122143-0< * unaffected
Red Hat Red Hat OpenShift Container Platform 4.22 4.22.9.8.202608130832-0< * unaffected
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一、 漏洞 CVE-2026-1933 基础信息

漏洞信息

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Vulnerability Title
Samba: missing access check on reparse point operations
来源: CVE Program / CVE List V5
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.
来源: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:H
来源: CVE Program / CVE List V5
Vulnerability Type
访问控制不恰当
来源: CVE Program / CVE List V5
Vulnerability Title
Samba 访问控制错误漏洞
来源: 中国国家信息安全漏洞库 CNNVD
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。
来源: 中国国家信息安全漏洞库 CNNVD
CVSS Information
N/A
来源: 中国国家信息安全漏洞库 CNNVD
Vulnerability Type
N/A
来源: 中国国家信息安全漏洞库 CNNVD

受影响产品

厂商 产品 影响版本 CPE 订阅
Red Hat Red Hat Enterprise Linux 10 0:4.23.5-109.el10_2 ~ * cpe:/o:redhat:enterprise_linux:10.2
Red Hat Red Hat Enterprise Linux 10.0 Extended Update Support 0:4.21.3-114.el10_0.1 ~ * cpe:/o:redhat:enterprise_linux_eus:10.0
Red Hat Red Hat Enterprise Linux 8 0:4.19.4-16.el8_10 ~ * cpe:/a:redhat:enterprise_linux:8::appstream
Red Hat Red Hat Enterprise Linux 8 0:4.19.4-16.el8_10 ~ * cpe:/a:redhat:enterprise_linux:8::appstream
Red Hat Red Hat Enterprise Linux 8.6 Advanced Mission Critical Update Support 0:4.15.5-16.el8_6.1 ~ * cpe:/a:redhat:rhel_aus:8.6::appstream
Red Hat Red Hat Enterprise Linux 8.6 Extended Update Support Long-Life Add-On 0:4.15.5-16.el8_6.1 ~ * cpe:/a:redhat:rhel_aus:8.6::appstream
Red Hat Red Hat Enterprise Linux 8.8 Telecommunications Update Service 0:4.17.5-7.el8_8.1 ~ * cpe:/a:redhat:rhel_e4s:8.8::appstream
Red Hat Red Hat Enterprise Linux 8.8 Update Services for SAP Solutions 0:4.17.5-7.el8_8.1 ~ * cpe:/a:redhat:rhel_e4s:8.8::appstream
Red Hat Red Hat Enterprise Linux 9 0:4.23.5-10.el9_8 ~ * cpe:/a:redhat:enterprise_linux:9::appstream
Red Hat Red Hat Enterprise Linux 9 0:4.23.5-10.el9_8 ~ * cpe:/a:redhat:enterprise_linux:9::appstream
Red Hat Red Hat Enterprise Linux 9.2 Update Services for SAP Solutions 0:4.17.5-105.el9_2.5 ~ * cpe:/a:redhat:rhel_e4s:9.2::appstream
Red Hat Red Hat Enterprise Linux 9.4 Update Services for SAP Solutions 0:4.19.4-105.el9_4.4 ~ * cpe:/a:redhat:rhel_e4s:9.4::appstream
Red Hat Red Hat Enterprise Linux 9.6 Extended Update Support 0:4.21.3-14.el9_6.1 ~ * cpe:/a:redhat:rhel_eus:9.6::appstream
Red Hat Red Hat OpenShift Container Platform 4.12 412.86.202608241157-0 ~ * cpe:/a:redhat:openshift:4.12::el8
Red Hat Red Hat OpenShift Container Platform 4.13 413.92.202609080414-0 ~ * cpe:/a:redhat:openshift:4.13::el9
Red Hat Red Hat OpenShift Container Platform 4.14 414.92.202608172040-0 ~ * cpe:/a:redhat:openshift:4.14::el9
Red Hat Red Hat OpenShift Container Platform 4.15 415.92.202608180329-0 ~ * cpe:/a:redhat:openshift:4.15::el9
Red Hat Red Hat OpenShift Container Platform 4.16 416.94.202608150307-0 ~ * cpe:/a:redhat:openshift:4.16::el9
Red Hat Red Hat OpenShift Container Platform 4.17 417.94.202608250221-0 ~ * cpe:/a:redhat:openshift:4.17::el9
Red Hat Red Hat OpenShift Container Platform 4.18 418.94.202608142238-0 ~ * cpe:/a:redhat:openshift:4.18::el9
Red Hat Red Hat OpenShift Container Platform 4.19 4.19.9.6.202606241344-0 ~ * cpe:/a:redhat:openshift:4.19::el9
Red Hat Red Hat OpenShift Container Platform 4.20 4.20.9.6.202608121719-0 ~ * cpe:/a:redhat:openshift:4.20::el9
Red Hat Red Hat OpenShift Container Platform 4.21 4.21.9.6.202608122143-0 ~ * cpe:/a:redhat:openshift:4.21::el9
Red Hat Red Hat OpenShift Container Platform 4.22 4.22.9.8.202608130832-0 ~ * cpe:/a:redhat:openshift:4.22::el9
Red Hat Red Hat Enterprise Linux 6 - cpe:/o:redhat:enterprise_linux:6
Red Hat Red Hat Enterprise Linux 6 - cpe:/o:redhat:enterprise_linux:6
Red Hat Red Hat Enterprise Linux 7 - cpe:/o:redhat:enterprise_linux:7
Red Hat Red Hat OpenShift Container Platform 4 - cpe:/a:redhat:openshift:4

二、漏洞 CVE-2026-1933 的公开POC

# POC 描述 源链接 神龙链接
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三、漏洞 CVE-2026-1933 的情报信息

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CVE-2026-1933 补丁与修复 (1)

CVE-2026-1933 厂商安全公告 (15)

CVE-2026-1933 其他参考 (6)

同批安全公告 · Red Hat · 2026-05-27 · 共 5 条

CVE-2026-3012 8.0 HIGH Samba 数据伪造问题漏洞
CVE-2026-9704 6.8 MEDIUM Keycloak 安全漏洞
CVE-2026-2340 6.5 MEDIUM Samba 安全漏洞
CVE-2026-9689 4.2 MEDIUM Keycloak 安全漏洞

IV. Related Vulnerabilities

V. Comments for CVE-2026-1933

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