CVE-2026-105133: Ahsay AhsayCBS Improper Authentication Vulnerability

CISA Known Exploited Vulnerabilities

Name

Ahsay AhsayCBS Improper Authentication Vulnerability

Vendor

Ahsay

Product

AhsayCBS

Added to the catalog

2026-10-14

Due date for US federal agencies

2026-10-17

Weaknesses

CWE-287

Catalog version

2026.10.30

Ahsay AhsayCBS contains an improper authentication vulnerability that could allow a remote attacker to bypass authentication via manipulation of the random parameter in the API component’s checkSysPwd function. This vulnerability can be chained with CVE-2026-105134.

Required action (CISA)

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.

Ransomware use: CISA does not mark known use of this vulnerability in ransomware campaigns.

Links in CISA's notes

• https://www.ahsay.com/en/company/announcements/patch-cve-105133-105134-update
• https://www.cisa.gov/news-events/directives/bod-26-04-prioritizing-security-updates-based-risk
• https://www.cisa.gov/news-events/directives/bod-26-04-implementation-guidance-prioritizing-security-updates-based-risk
• https://nvd.nist.gov/vuln/detail/CVE-2026-105133

Read on 2026-11-02T23:39:54.475Z under licence cisa-kev-cc0@b0067899 from https://www.cisa.gov/sites/default/files/feeds/known_exploited_vulnerabilities.json

NVD analysis

Status

Analyzed

Published

2026-10-04T07:16:33.087

Last modified

2026-10-26T18:07:09.000

Weaknesses

CWE-287

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.

References

• https://vuldb.com/cve/CVE-2026-105133 (Third Party Advisory, VDB Entry)
• https://vuldb.com/submit/942688 (Third Party Advisory, VDB Entry)
• https://vuldb.com/vuln/413350 (Third Party Advisory, VDB Entry)
• https://vuldb.com/vuln/413350/cti (Permissions Required, VDB Entry)
• https://www.ahsay.com/en/company/announcements/patch-cve-105133-105134-update (Vendor Advisory)
• https://www.huntress.com/blog/ahsaycbs-flaws-exploit (Third Party Advisory)
• https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2026-105133 (US Government Resource)

This product uses the NVD API but is not endorsed or certified by the NVD.

Read on 2026-11-02T23:42:31.494Z under licence nvd-api-terms-of-use@ff2a5288 from https://services.nvd.nist.gov/rest/json/cves/2.0?cveId=CVE-2026-105133

CVE record

Title (CNA)

Ahsay AhsayCBS API ApiStructsAction.java checkSysPwd improper authentication

Assigner

VulDB

State

PUBLISHED

Published

2026-10-04T05:15:14.561Z

Updated

2026-10-26T14:31:10.237Z

Problem types

Improper Authentication

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.

References

• VDB-413350 | Ahsay AhsayCBS API ApiStructsAction.java checkSysPwd improper authentication
• VDB-413350 | CTI Indicators (IOB, IOC, IOA)
• CVE-2026-105133 | CVE Analysis and Report
• Submit #942688 | Ahsay Systems Corporation Limited AhsayCBS 10.0.3 Authentication Bypass
• https://www.ahsay.com/en/company/announcements/patch-cve-105133-105134-update
• https://www.huntress.com/blog/ahsaycbs-flaws-exploit

Read on 2026-11-03T02:18:21.255Z under licence cve-terms-of-use@81bfa2f3 from https://raw.githubusercontent.com/CVEProject/cvelistV5/main/cves/2026/105xxx/CVE-2026-105133.json

Defensive techniques (MITRE D3FEND)

D3FEND maps these defensive techniques to the weakness (CWE) that NVD lists for this CVE, through the digital artifacts the weakness affects. D3FEND does not say they stop this vulnerability.

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