CVEs / CVE-2026-105133
CVE-2026-105133: Ahsay AhsayCBS Improper Authentication Vulnerability
- Known exploited in the CISA KEV catalog since 14 Oct 2026
- medium 6.9 CVSS 4.0 (from the CNA)
- EPSS 79.4% chance of exploitation in the next 30 days, higher than 99% of CVEs (30 Oct 2026)
- Last changed at its sources
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Summary
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.
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 and fixed versions
| Product | Affected | Fixed in |
|---|---|---|
| Ahsay AhsayCBS | 9.15.2.0 | — |
| Ahsay AhsayCBS | 9.15.2.1 | — |
| Ahsay AhsayCBS | 9.15.2.2 | — |
| Ahsay AhsayCBS | 9.15.2.3 | — |
| Ahsay AhsayCBS | 9.15.2.4 | — |
| Ahsay AhsayCBS | 9.15.2.5 | — |
| Ahsay AhsayCBS | 9.15.2.6 | — |
| Ahsay AhsayCBS | 9.15.2.7 | — |
| Ahsay AhsayCBS | 9.15.2.8 | — |
| Ahsay AhsayCBS | 9.15.2.9 | — |
| Ahsay AhsayCBS | 9.15.2.10 | — |
| Ahsay AhsayCBS | 9.15.2.11 | — |
| Ahsay AhsayCBS | 9.15.2.12 | — |
| Ahsay AhsayCBS | 9.15.2.13 | — |
| Ahsay AhsayCBS | 9.15.2.14 | — |
| Ahsay AhsayCBS | 9.15.2.15 | — |
| Ahsay AhsayCBS | 9.15.2.16 | — |
| Ahsay AhsayCBS | 9.15.2.17 | — |
| Ahsay AhsayCBS | 9.15.2.18 | — |
| Ahsay AhsayCBS | 9.15.2.19 | — |
| Ahsay AhsayCBS | 9.15.2.20 | — |
| Ahsay AhsayCBS | 9.15.2.21 | — |
| Ahsay AhsayCBS | 9.15.2.22 | — |
| Ahsay AhsayCBS | 9.15.2.23 | — |
| Ahsay AhsayCBS | 9.15.2.24 | — |
| Ahsay AhsayCBS | 9.15.2.25 | — |
| Ahsay AhsayCBS | 9.15.2.26 | — |
| Ahsay AhsayCBS | 9.15.2.27 | — |
| Ahsay AhsayCBS | 9.15.2.28 | — |
| Ahsay AhsayCBS | 9.15.2.29 | — |
Exploitation
| In CISA KEV since | 14 Oct 2026 |
|---|---|
| Due date for US federal agencies | 17 Oct 2026 |
| Used in ransomware campaigns | Unknown |
| 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. |
Severity
| CVSS 4.0 | 6.9 mediumCVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:A/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:XScored by the CNA ([email protected]) |
|---|---|
| Weakness | CWE-287 |
References
- CVE-2026-105133 on NVD
- CVE-2026-105133 in the CISA KEV catalog
- https://www.ahsay.com/en/company/announcements/patch-cve-105133-105134-update (cited by CISA)
- https://www.cisa.gov/news-events/directives/bod-26-04-prioritizing-security-updates-based-risk (cited by CISA)
- https://www.cisa.gov/news-events/directives/bod-26-04-implementation-guidance-prioritizing-security-updates-based-risk (cited by CISA)
- 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
Sources
Exploitation status from the CISA Known Exploited Vulnerabilities catalog. EPSS scores from FIRST. Descriptions, severity and references from the National Vulnerability Database. Open-source package versions from OSV (CC-BY 4.0). Text is shown as each source states it; Stackurity does not edit it. Check the vendor's advisory before acting.
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