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High 7.1Published May 27, 2026
CVE-2026-1933Samba: missing access check on reparse point operations
Updated under an hour ago ()
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It affects Red Hat Enterprise Linux 10 and 9 other products. Add what you run to find out whether that includes you.
No exploitation reported and no EPSS estimate yet.
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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.
- CVSS
- 7.1 HIGH (v3.1, CNA)CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:H
- Weakness (CWE)
- CWE-284
- Known exploited
- Not in CISA's KEV catalog
- EPSS (exploitation in the next 30 days)
- Not loaded for this CVE
- Assigned by
- redhat
- NVD analysis
- Modified
- Record last updated
- Oct 8, 2026
- First seen by InfoSec Signals
- Oct 9, 2026
Affected products
Red Hat Red Hat Enterprise Linux 10 redhat:enterprise_linux | from 0:4.23.5-109.el10_2 not affected | CNA record |
Red Hat Red Hat Enterprise Linux 10.0 Extended Update Support redhat:enterprise_linux_eus | from 0:4.21.3-114.el10_0.1 not affected | CNA record |
from 0:4.15.5-16.el8_6.1 not affected | CNA record | |
Red Hat Red Hat Enterprise Linux 8.6 Advanced Mission Critical Update Support redhat:rhel_eus_long_life | from 0:4.15.5-16.el8_6.1 not affected | CNA record |
from 0:4.17.5-7.el8_8.1 not affected | CNA record | |
from 0:4.17.5-7.el8_8.1 not affected | CNA record | |
Red Hat Red Hat Enterprise Linux 9.6 Extended Update Support redhat:rhel_eus | from 0:4.21.3-14.el9_6.1 not affected | CNA record |
Red Hat Red Hat OpenShift Container Platform 4.12 redhat:openshift | from 412.86.202608241157-0 not affected | CNA record |
Red Hat Red Hat Enterprise Linux 10 redhat:enterprise_linux | from 0:4.23.5-109.el10_2 not affected | CISA ADP |
Red Hat Red Hat Enterprise Linux 10.0 Extended Update Support redhat:enterprise_linux_eus | from 0:4.21.3-114.el10_0.1 not affected | CISA ADP |
from 0:4.15.5-16.el8_6.1 not affected | CISA ADP | |
Red Hat Red Hat Enterprise Linux 8.6 Extended Update Support Long-Life Add-On redhat:rhel_eus_long_life | from 0:4.15.5-16.el8_6.1 not affected | CISA ADP |
from 0:4.17.5-7.el8_8.1 not affected | CISA ADP | |
from 0:4.17.5-7.el8_8.1 not affected | CISA ADP | |
Red Hat Red Hat Enterprise Linux 9.6 Extended Update Support redhat:rhel_eus | from 0:4.21.3-14.el9_6.1 not affected | CISA ADP |
Red Hat Red Hat OpenShift Container Platform 4.12 redhat:openshift | from 412.86.202608241157-0 not affected | CISA ADP |
redhat openshift_container_platform redhat:openshift_container_platform | 4.0 | NVD |
samba samba samba:samba | from 4.1.0 before 4.2.2 | NVD |
redhat enterprise_linux redhat:enterprise_linux | 7.0; 8.0; 9.0; 10.0 | NVD |
References
- https://access.redhat.com/errata/RHSA-2026:22644vendor-advisory, x-refsource-redhat
- https://access.redhat.com/errata/RHSA-2026:22963vendor-advisory, x-refsource-redhat
- https://access.redhat.com/errata/RHSA-2026:25049vendor-advisory, x-refsource-redhat
- https://access.redhat.com/errata/RHSA-2026:25979vendor-advisory, x-refsource-redhat
- https://access.redhat.com/errata/RHSA-2026:28053vendor-advisory, x-refsource-redhat
- https://access.redhat.com/errata/RHSA-2026:28054vendor-advisory, x-refsource-redhat
- https://access.redhat.com/errata/RHSA-2026:28055vendor-advisory, x-refsource-redhat
- https://access.redhat.com/errata/RHSA-2026:28056vendor-advisory, x-refsource-redhat
- https://access.redhat.com/errata/RHSA-2026:28057vendor-advisory, x-refsource-redhat
- https://access.redhat.com/errata/RHSA-2026:29863vendor-advisory, x-refsource-redhat
- https://access.redhat.com/errata/RHSA-2026:54581vendor-advisory, x-refsource-redhat
- https://access.redhat.com/errata/RHSA-2026:54599vendor-advisory, x-refsource-redhat
- https://access.redhat.com/errata/RHSA-2026:54769vendor-advisory, x-refsource-redhat
- https://access.redhat.com/errata/RHSA-2026:56786vendor-advisory, x-refsource-redhat
- https://access.redhat.com/errata/RHSA-2026:56853vendor-advisory, x-refsource-redhat
- https://access.redhat.com/errata/RHSA-2026:56911vendor-advisory, x-refsource-redhat
- https://access.redhat.com/errata/RHSA-2026:57483vendor-advisory, x-refsource-redhat
- https://access.redhat.com/errata/RHSA-2026:59831vendor-advisory, x-refsource-redhat
- https://access.redhat.com/errata/RHSA-2026:60019vendor-advisory, x-refsource-redhat
- https://access.redhat.com/errata/RHSA-2026:65839vendor-advisory, x-refsource-redhat
- https://access.redhat.com/security/cve/CVE-2026-1933vdb-entry, x-refsource-redhat
- https://bugzilla.redhat.com/show_bug.cgi?id=2447317issue-tracking, x-refsource-redhat
- https://bugzilla.samba.org/show_bug.cgi?id=15992
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