Actively exploited · Published Oct 4, 2026 · Assigned by VulDB
CVE-2026-105134Ahsay AhsayCBS Replication Receiver UpdateReceivers.do os command injection
Critical 10.0 Exploited
In plain English
A critical-severity OS command injection 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 81.8% (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 flaw has been found in Ahsay AhsayCBS up to 9.15.2.69/10.3.4.44. This vulnerability affects unknown code of the file /rps/api/json/UpdateReceivers.do of the component Replication Receiver. Executing a manipulation of the argument random can lead to os command injection. It is possible to launch the attack remotely. The exploit has been published and may be used. Upgrading to version 9.15.2.70 and 10.3.4.45 is able to resolve this issue. Upgrading the affected component is advised. 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-78, CWE-77 · Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H/E:H/RL:O/RC:C
References
- VDB-413351 | Ahsay AhsayCBS Replication Receiver UpdateReceivers.do os command injection vdb-entry, technical-description
- VDB-413351 | CTI Indicators (IOB, IOC, TTP, IOA) signature, permissions-required
- CVE-2026-105134 | CVE Analysis and Report third-party-advisory
- Submit #942743 | Ahsay Systems Corporation Limited Ahsay CBS 10.3.0 Remote Code Execution via Arbitrary File Write 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-2026-105134 government-resource