Actively exploited in the wild
Ahsay AhsayCBS Improper Authentication Vulnerability
Ahsay - AhsayCBS · Listed in the CISA KEV since 2026-10-14. This indicates confirmed attacks in production environments.
Required action: 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.
CVE-2026-105133
HighCVSS 7.3KEVExploitation Probability (EPSS)
Very high risk100th percentile - higher than 100% of all known CVEs
Summary
A vulnerability was detected in AhsayCBS up to 9.15.2.69/10.3.4.44 affecting the checkSysPwd function in com/ahsay/obs/api/ApiStructsAction.java of the API component. Manipulating the 'random' argument results in improper authentication, and the attack can be initiated remotely. The exploit is now public and may be used.
Risk Assessment
A remote attacker can bypass authentication and gain unauthorized API access, potentially taking control of the backup system. The public exploit increases exploitation risk.
Recommendation
Upgrade AhsayCBS to version 9.15.2.70 or 10.3.4.45, as the initial patch did not properly fix the vulnerability. Also review API access logs for suspicious activity.
Other vulnerabilities in AhsayCBS
Original NVD description (English source)
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.
Vulnerability data from NVD (NIST) · CISA KEV · EPSS