CVE-2026-105134: Ahsay AhsayCBS Command Injection Vulnerability

In short

Ahsay AhsayCBS has a weakness classified as command injection (CWE-77). CISA added it to its Known Exploited Vulnerabilities catalog on 2026-10-14. NVD lists CVSS 4.0 at 10 CRITICAL.

What it is

“Ahsay AhsayCBS contains a command injection vulnerability that could allow a remote attacker to execute operating system commands via manipulation of the random parameter in the Replication Receiver component’s /rps/api/json/UpdateReceivers.do endpoint. This vulnerability can be chained with CVE-2026-105133.” — CISA KEV, retrieved 2026-11-01

“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.” — NVD, retrieved 2026-11-01

Who is affected

Ahsay AhsayCBS. NVD lists the following versions as affected:

• Versions before 9.15.2.70
• Versions from 10.1.0 inclusive, before 10.3.4.45

Exploitation status

CISA KEV added: 2026-10-14. Known ransomware campaign use: Not reported by CISA. Due date CISA set for US federal civilian agencies: 2026-10-17.

Scores

NVD CVSS 4.0: 10 CRITICAL; vector CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H/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; source [email protected].

EPSS by FIRST: 81.76%; percentile 99.64; score date 2026-10-31. EPSS estimates the probability of exploitation in the next 30 days.

CWE: CWE-77, CWE-78.

Timeline

CISA 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.” — CISA KEV

What to do

• Confirm whether you run Ahsay AhsayCBS and which version.
• Apply the vendor update or mitigation in the advisory.
• Follow CISA’s required action.
• Review the vendor guidance on signs of compromise.
• Track the fix through completion.

References

• Third Party Advisory, VDB Entry: https://vuldb.com/cve/CVE-2026-105134
• Third Party Advisory, VDB Entry: https://vuldb.com/submit/942743
• Vendor Advisory: https://www.ahsay.com/en/company/announcements/patch-cve-105133-105134-update
• NVD detail
• CVE.org record
• CISA KEV catalog

Sources and dates

CISA Known Exploited Vulnerabilities Catalog, version 2026.10.30; retrieved 2026-11-01. CISA KEV data: CC0 1.0. No endorsement by CISA.

NVD retrieved: 2026-11-01. This product uses the NVD API but is not endorsed or certified by the NVD.

EPSS scores by FIRST; score date 2026-10-31.