CVE-2026-11839

Deferred Deferred - Pending Action

Unrestricted File Upload in Başarsoft Rotaban

Publication date: 2026-06-11

Last updated on: 2026-06-11

Assigner: Computer Emergency Response Team of the Republic of Turkey

Description

Unrestricted upload of file with dangerous type vulnerability in Başarsoft Information Technologies Inc. Rotaban allows Upload a Web Shell to a Web Server. This issue affects Rotaban: from V2026.06.002 before V2026.06.003.

CVSS Scores

EPSS Scores

Probability:
Percentile:

Meta Information

Published

2026-06-11

Last Modified

2026-06-11

Generated

2026-07-02

AI Q&A

2026-06-12

EPSS Evaluated

2026-06-30

NVD

CVE-2026-11839

EUVD

EUVD-2026-36249

Affected Vendors & Products

Vendor	Product	Version / Range
basarsoft_information_technologies_inc	rotaban	From 2026.06.002 (inc) to 2026.06.003 (exc)

Helpful Resources

Exploitability

CWE

KEV

CWE ID	Description
CWE-434	The product allows the upload or transfer of dangerous file types that are automatically processed within its environment.

Attack-Flow Graph

Compliance Impact

The vulnerability allows unrestricted upload of files with dangerous types, including web shells, to a web server. This can lead to unauthorized access, data breaches, and potential full compromise of the affected system.

Such security weaknesses can result in violations of common standards and regulations like GDPR and HIPAA, which require protection of personal and sensitive data against unauthorized access and breaches.

Therefore, exploitation of this vulnerability could lead to non-compliance with these regulations due to potential data confidentiality, integrity, and availability impacts.

Executive Summary

This vulnerability is an unrestricted upload of files with dangerous types in Başarsoft Information Technologies Inc. Rotaban software. It allows an attacker to upload a web shell to a web server, which can then be used to execute arbitrary commands or control the server remotely.

Impact Analysis

The impact of this vulnerability is severe, as indicated by the CVSS score of 9.9. An attacker with low privileges can remotely upload a malicious web shell, leading to complete compromise of the affected system. This includes full confidentiality, integrity, and availability loss.

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