CVE-2026-105133: Ahsay AhsayCBS Improper Authentication Vulnerability

Affected versions

Product	Affected versions	Fixed in
Ahsay Cloud Backup Suite	from 10.1.0 before 10.3.4.45	10.3.4.45
Ahsay Cloud Backup Suite	before 9.15.2.70	9.15.2.70

Required action (CISA's text)

Apply mitigations in accordance with vendor instructions, ensuring compliance with CISA’s BOD 26-04 Prioritizing Security Updates Based on Risk (see URL in Notes) guidance and CISA’s “Forensics Triage Requirements” (see URL in Notes). Follow applicable BOD 26-04 guidance for cloud services or discontinue use of the product if mitigations are unavailable. Stakeholders are responsible for evaluating each asset's internet exposure and ensuring adherence to BOD 26-04 patching guidelines.

Description (NVD)

A vulnerability was detected in Ahsay AhsayCBS up to 9.15.2.69/10.3.4.44. This affects the function checkSysPwd of the file com/ahsay/obs/api/ApiStructsAction.java of the component API. Performing a manipulation of the argument random results in improper authentication. It is possible to initiate the attack remotely. The exploit is now public and may be used. Upgrading to version 9.15.2.70 and 10.3.4.45 is able to mitigate this issue. It is recommended to upgrade the affected component. The initial patch did not fix the security vulnerability properly. An update of the CVE entry to reflect this became necessary.

SOURCES

• NVDNVD entry for CVE-2026-105133
• CISA KEVCISA Known Exploited Vulnerabilities catalog
• VENDORwww.ahsay.com/en/company/announcements/patch-cve-105133-105…

Other Ahsay flaws

• CVE-2026-105134: Ahsay AhsayCBS Command Injection Vulnerability

Data from NVD, CISA KEV, FIRST EPSS and vendor advisories. Updated 26 Oct 2026.