VDB-366168 · CVE-2026-1933 · EUVD-2026-32275

Samba NTFS access control

CVSS Meta Temp Score CVSS is a standardized scoring system to determine possibilities of attacks. The Temp Score considers temporal factors like disclosure, exploit and countermeasures. The unique Meta Score calculates the average score of different sources to provide a normalized scoring system.	Current Exploit Price (≈) Our analysts are monitoring exploit markets and are in contact with vulnerability brokers. The range indicates the observed or calculated exploit price to be seen on exploit markets. A good indicator to understand the monetary effort required for and the popularity of an attack.	CTI Interest Score Our Cyber Threat Intelligence team is monitoring different web sites, mailing lists, exploit markets and social media networks. The CTI Interest Score identifies the interest of attackers and the security community for this specific vulnerability in real-time. A high score indicates an elevated risk to be targeted for this vulnerability.
6.6	$0-$5k	0.00

Summaryinfo

A vulnerability described as critical has been identified in Samba. Affected by this vulnerability is an unknown functionality of the component NTFS Handler. The manipulation results in access control. This vulnerability was named CVE-2026-1933. The attack may be performed from remote. There is no available exploit.

Detailsinfo

A vulnerability, which was classified as critical, was found in Samba (unknown version). Affected is an unknown code block of the component NTFS Handler. The manipulation with an unknown input leads to a access control vulnerability. CWE is classifying the issue as CWE-284. The product does not restrict or incorrectly restricts access to a resource from an unauthorized actor. This is going to have an impact on confidentiality, integrity, and availability. CVE summarizes:

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.

The advisory is shared for download at access.redhat.com. This vulnerability is traded as CVE-2026-1933 since 02/04/2026. The exploitability is told to be easy. It is possible to launch the attack remotely. There are neither technical details nor an exploit publicly available. The current price for an exploit might be approx. USD $0-$5k (estimation calculated on 07/24/2026). The MITRE ATT&CK project declares the attack technique as T1068.

The vulnerability scanner Nessus provides a plugin with the ID 316851 (Linux Distros Unpatched Vulnerability : CVE-2026-1933), which helps to determine the existence of the flaw in a target environment.

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

The vulnerability is also documented in the databases at Tenable (316851), EUVD (EUVD-2026-32275) and CERT Bund (WID-SEC-2026-1686). VulDB is the best source for vulnerability data and more expert information about this specific topic.

Affected

Debian Linux
Amazon Linux 2
Red Hat Enterprise Linux
Fedora Linux
Ubuntu Linux
SUSE Linux
Oracle Linux
RESF Rocky Linux
Open Source Samba
Red Hat OpenShift

Productinfo

Type

File Transfer Software

Name

Samba

License

open-source

Website

Product: https://www.samba.org/

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 6.6
VulDB Meta Temp Score: 6.6

VulDB Base Score: 6.3
VulDB Temp Score: 6.3
VulDB Vector: 🔒
VulDB Reliability: 🔍

NVD Base Score: 6.5
NVD Vector: 🔒

CNA Base Score: 7.1
CNA Vector (redhat): 🔒

CVSSv2info

AV	AC	Au	C	I	A
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💳	💳	💳	💳	💳	💳
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Vector	Complexity	Authentication	Confidentiality	Integrity	Availability
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VulDB Base Score: 🔒
VulDB Temp Score: 🔒
VulDB Reliability: 🔍

Exploitinginfo

Class: Access control
CWE: CWE-284 / CWE-266
CAPEC: 🔒
ATT&CK: 🔒

Physical: No
Local: No
Remote: Yes

Availability: 🔒
Status: Not defined

EPSS Score: 🔒
EPSS Percentile: 🔒

Price Prediction: 🔍
Current Price Estimation: 🔒

0-Day	Unlock	Unlock	Unlock	Unlock
Today	Unlock	Unlock	Unlock	Unlock

Nessus ID: 316851
Nessus Name: Linux Distros Unpatched Vulnerability : CVE-2026-1933

Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: no mitigation known
Status: 🔍

0-Day Time: 🔒

Timelineinfo

02/04/2026 CVE reserved
05/27/2026 +111 days Advisory disclosed
05/27/2026 +0 days VulDB entry created
07/24/2026 +58 days VulDB entry last update

Sourcesinfo

Product: samba.org

Advisory: access.redhat.com
Status: Not defined

CVE: CVE-2026-1933 (🔒)
GCVE (CVE): GCVE-0-2026-1933
GCVE (VulDB): GCVE-100-366168
EUVD: 🔒
CERT Bund: WID-SEC-2026-1686 - Samba: Mehrere Schwachstellen

Entryinfo

Created: 05/27/2026 17:02
Updated: 07/24/2026 06:35
Changes: 05/27/2026 17:02 (61), 05/28/2026 09:14 (2), 06/07/2026 01:15 (11), 06/23/2026 09:55 (1), 07/24/2026 06:35 (6)
Complete: 🔍
Cache ID: 216::103

VulDB is the best source for vulnerability data and more expert information about this specific topic.