Samba vfs_worm insufficient privileges

CVSS Meta Temp Score
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Current Exploit Price (≈)
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CTI Interest Score
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5.4$0-$5k0.00

Summaryinfo

A vulnerability classified as problematic was found in Samba. This affects an unknown part of the component vfs_worm. Such manipulation leads to insufficient privileges. This vulnerability is referenced as CVE-2026-2340. It is possible to launch the attack remotely. No exploit is available.

Detailsinfo

A vulnerability was found in Samba (version unknown) and classified as problematic. Affected by this issue is an unknown function of the component vfs_worm. The manipulation with an unknown input leads to a insufficient privileges vulnerability. Using CWE to declare the problem leads to CWE-280. The product does not handle or incorrectly handles when it has insufficient privileges to access resources or functionality as specified by their permissions. This may cause it to follow unexpected code paths that may leave the product in an invalid state. Impacted is integrity. CVE summarizes:

A flaw was found in Samba’s vfs_worm module. The module is intended to provide write-once, read-many (WORM) protections by preventing modification of files after a configurable grace period. Due to insufficient validation during rename operations, an authenticated user with write access to a share could overwrite a protected file by renaming a newly created file over the existing WORM-protected file.

The advisory is available at access.redhat.com. This vulnerability is handled as CVE-2026-2340 since 02/11/2026. The exploitation is known to be easy. The attack may be launched remotely. The technical details are unknown and an exploit is not available. The structure of the vulnerability defines a possible price range of USD $0-$5k at the moment (estimation calculated on 07/24/2026). This vulnerability is assigned to T1222 by the MITRE ATT&CK project.

The vulnerability scanner Nessus provides a plugin with the ID 316800 (Debian dsa-6297 : ctdb - security update), 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 (316800), EUVD (EUVD-2026-32312) and CERT Bund (WID-SEC-2026-1686). If you want to get best quality of vulnerability data, you may have to visit VulDB.

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

Name

License

Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 5.4
VulDB Meta Temp Score: 5.4

VulDB Base Score: 4.3
VulDB Temp Score: 4.3
VulDB Vector: 🔒
VulDB Reliability: 🔍

CNA Base Score: 6.5
CNA Vector (redhat): 🔒

CVSSv2info

AVACAuCIA
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VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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VulDB Base Score: 🔒
VulDB Temp Score: 🔒
VulDB Reliability: 🔍

Exploitinginfo

Class: Insufficient privileges
CWE: CWE-280 / CWE-266
CAPEC: 🔒
ATT&CK: 🔒

Physical: No
Local: No
Remote: Yes

Availability: 🔒
Status: Not defined

EPSS Score: 🔒
EPSS Percentile: 🔒

Price Prediction: 🔍
Current Price Estimation: 🔒

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Nessus ID: 316800
Nessus Name: Debian dsa-6297 : ctdb - security update

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: no mitigation known
Status: 🔍

0-Day Time: 🔒

Timelineinfo

02/11/2026 CVE reserved
05/27/2026 +104 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-2026-2340 (🔒)
GCVE (CVE): GCVE-0-2026-2340
GCVE (VulDB): GCVE-100-366170
EUVD: 🔒
CERT Bund: WID-SEC-2026-1686 - Samba: Mehrere Schwachstellen

Entryinfo

Created: 05/27/2026 17:03
Updated: 07/24/2026 06:35
Changes: 05/27/2026 17:03 (60), 05/29/2026 22:30 (2), 06/23/2026 09:55 (1), 07/24/2026 06:35 (6)
Complete: 🔍
Cache ID: 216::103

If you want to get best quality of vulnerability data, you may have to visit VulDB.

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