CVE-2026-105133
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.
Fix
Public exploits 1
- horizon3ai/AhsayCBS-Auth-Bypass-RCE PoC on GitHub
Each line links to the index that lists it, never to exploit code. Exploit-DB's "verified" and a Metasploit rank of good or better count as verified; a PoC-in-GitHub entry is a repository's claim.
CISA KEV required action · due 2026-10-17
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.
Added to the catalog 2026-10-14. CISA KEV
Patch, vendor advisory and mitigation references on NVD 1
Every line above is quoted from NVD, CISA, Microsoft, the vendor's own advisory or DISA; nothing is generated.
In the news 4
- AhsayCBS Flaws Exploited to Deploy Web Shells Get New Fixes After Incomplete Patches The Hacker News · 2026-10-15
- CISA Adds Four Known Exploited Vulnerabilities to Catalog CISA advisories and alerts · 2026-10-14
- Attackers Exploit AhsayCBS Flaws to Deploy XMRig Miners Disguised as Microsoft Edge The Hacker News · 2026-10-09
- Threat Actors Exploit Critical AhsayCBS Flaws to Drop Webshells and XMRig Cryptominer Huntress blog · 2026-10-08
Change history 9
- StatusModified → AnalyzedNVD modified 2026-10-26 18:07
- References+2 -1 references (now 7)NVD modified 2026-10-26 15:16
- StatusAnalyzed → ModifiedNVD modified 2026-10-26 15:16
- DescriptionNVD modified 2026-10-26 15:16
A vulnerability was detected in Ahsay AhsayCBS up to 10.3.2. 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 10.3.4 is able to mitigate this issue. It is recommended to upgrade the affected component.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. - CVSS5.5 (v4.0, CVSS: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:P/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:X) → 6.9 (v4.0, CVSS: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:X)NVD modified 2026-10-26 15:16
- EPSS0.06 → 0.79
- Cpes+1 CPE criteria (now 1)NVD modified 2026-10-15 13:47
- StatusUndergoing Analysis → AnalyzedNVD modified 2026-10-15 13:47
- First seenCVSS 5.5 · in KEVNVD modified 2026-10-14 20:30
Affected (CPE criteria) 1
cpe:2.3:a:ahsay:cloud_backup_suite:*:*:*:*:*:*:*:*
References 7
- 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