Actively exploited · Published Oct 4, 2026 · Assigned by VulDB
CVE-2026-105133Ahsay AhsayCBS API ApiStructsAction.java checkSysPwd improper authentication
High 7.3 Exploited
In plain English
A high-severity improper authentication in AhsayCBS from Ahsay. Attackers are actively exploiting it in the wild (listed by CISA on October 14, 2026). The chance it is exploited in the next 30 days is estimated at 79.5% (higher than 99.6% of all known vulnerabilities). Ready-made attack tooling exists: Nuclei, public proof-of-concept code. 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.
CISA guidance
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.
Federal agencies must remediate by Oct 17, 2026.
Official description
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.
Affected products (as reported)
Weakness: CWE-287 · Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L/E:H/RL:O/RC:C
References
- VDB-413350 | Ahsay AhsayCBS API ApiStructsAction.java checkSysPwd improper authentication vdb-entry, technical-description
- VDB-413350 | CTI Indicators (IOB, IOC, IOA) signature, permissions-required
- CVE-2026-105133 | CVE Analysis and Report third-party-advisory
- Submit #942688 | Ahsay Systems Corporation Limited AhsayCBS 10.0.3 Authentication Bypass third-party-advisory
- https://www.ahsay.com/en/company/announcements/patch-cve-105133-105134-update patch
- https://www.huntress.com/blog/ahsaycbs-flaws-exploit broken-link, exploit
- https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2026-105133 government-resource