Vulnerability report

Exploited in the wild High confidence Not in CISA KEV

CVE-2026-105134

AhsayCBS Command Injection

Ahsay / AhsayCBS · 10.3.0

Watch CVE-2026-105134 Browse KEV feed
Severity
CVSS 10.0 · Critical
Confidence
High
Exploit status
Exploited in the wild
EPSS
1.8%
First observed
—
Last observed
—

Decision summary

What security teams need to know first

Direct answers before the deeper technical record.

What it is

CVE-2026-105134 is an unauthenticated vulnerability affecting Ahsay AhsayCBS. A flaw has been found in Ahsay AhsayCBS up to 10.3.2. This vulnerability affects unknown code of the file /rps/api/json/UpdateReceivers.do...

Is it exploited?

Yes. Previdian tracks this CVE as a known exploited vulnerability. Confidence is high. Also confirmed by third-party sources.

Who is affected?

Ahsay / AhsayCBS 10.3.0.

What should we do?

Prioritize remediation. Validate affected assets and apply vendor fixes on an accelerated timeline.

Overview

A flaw has been found in Ahsay AhsayCBS up to 10.3.2

A flaw has been found in Ahsay AhsayCBS up to 10.3.2. 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 10.3.4 is able to resolve this issue. Upgrading the affected component is advised.

Ahsay Affected
AhsayCBS
10.3.0 10.3.1 10.3.2
Ahsay Unaffected
AhsayCBS
10.3.4
View vendor advisory (opens in new tab)
Published
04 Oct 2026
Exploitation Reported
09 Oct 2026
Attack vector
Remote
Complexity
Low
Privileges
None
User interaction
None

CVE References

Exploitation evidence

Why Previdian marks this CVE as exploited

Third-party attestation and first-party sensor observation are shown separately so teams can judge the evidence chain.

Exploited in the wild

Huntress Blog

Recorded 09 Oct 2026

A trusted third party reported exploitation.

Proof of concept available

GitHub

Recorded 05 Oct 2026

Public scanner or PoC coverage increases practical exploitability.

Known exploited vulnerability sources

Per-source evidence links for KEV attestations are available through the Previdian Pro API.

Learn about Pro API access
Source Added
Huntress Blog First 2026-10-09 09:54 UTC
The Hacker News 2026-10-09 13:32 UTC

Detection

Operational artifacts and observed signals

Make the evidence actionable in scanner, SOC, and edge-control workflows.

Observed signals

Request targets
User-Agents
Callback hosts
0
0
0

Request targets and User-Agents available in Pro. Callback host details available in Enterprise.

Scanner coverage

No scanner integrations recorded yet.

Virtual patch status

No Previdian virtual patch is currently available. Future rules ship for ModSecurity, Cloudflare, and AWS WAF.

Learn about virtual patches →

No detection artifacts or sensor request patterns are available for this CVE yet.

Check back as sensor telemetry and scanner integrations are updated.

Risk and context

Severity, weaknesses, and research context

CVSS v4.0

10.0 Critical

Potential damage if exploited. Separate from whether attackers are using it.

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:P

EPSS

1.8%

Estimated chance of exploitation in the next 30 days. Previdian's warning comes from evidence, not this score.

Weaknesses

Improper Neutralization of Special Elements used in a Command ('Command Injection') CWE-77 Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection') CWE-78

Recent mention · The Hacker News

Attackers Exploit AhsayCBS Flaws to Deploy XMRig Miners Disguised as Microsoft Edge

Ravie LakshmananOct 09, 2026Vulnerability / Cryptojacking Threat actors have been observed exploiting two recently disclosed flaws in the AhsayCBS backup utility to seize control of affected devices and deploy web shells and XMRig cryptocurrency miners. Details of the flaws...

Read full advisory

All CVSS Scores

CVSS v4.0 10.0 Critical

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:P

CVSS v3.1 10.0 Critical

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H

CVSS v3.0 10.0 Critical

CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H/E:P/RL:O/RC:C

CVSS v2.0 10.0 High

AV:N/AC:L/Au:N/C:C/I:C/A:C

All Mentions

Recent mention · The Hacker News

Attackers Exploit AhsayCBS Flaws to Deploy XMRig Miners Disguised as Microsoft Edge

The Hacker News · 09 Oct 2026

Ravie LakshmananOct 09, 2026Vulnerability / Cryptojacking Threat actors have been observed exploiting two recently disclosed flaws in the AhsayCBS backup utility to seize control of affected devices and deploy web shells and XMRig cryptocurrency miners. Details of the flaws are below - CVE-2026-105133 (CVSS v4 score: 5.5) - An improper authentication vulnerability in the checkSysPwd() function in the "com/ahsay/obs/api/ApiStructsAction.java" component. CVE-2026-105134 (CVSS v4 score: 9.3) - An operating system command injection vulnerability in the Replication Receiver component. A remote...

Recent mention · Huntress Blog

Threat Actors Exploit Critical AhsayCBS Flaws to Drop Webshells and XMRig Cryptominer

Huntress Blog · 08 Oct 2026

Threat actors are exploiting AhsayCBS flaws, including CVE-2026-105133 and CVE-2026-105134, to deploy webshells and XMRig cryptominers. Update to 10.3.4 and restrict access now.

Potential Proof of Concepts

These PoCs are unverified and could contain malware. Use at your own risk.

RayanAlmulhim/CVE-2026-105134-lab

github · Created 2026-10-05 13:00:51 UTC · 0 stars · AI assessment 90%

Educational lab and clean-room reproduction demonstrating the OS command injection pattern in CVE-2026-105134. For defensive research only.

Timeline

From disclosure to observed exploitation

  1. 13:32 UTC

    KEV confirmed by The Hacker News

    Exploitation attested by an external source

  2. 09:54 UTC

    Added to Previdian KEV Feed

    High-confidence, third-party attested exploitation

  3. 13:00 UTC

    Public PoC available

    Public proof-of-concept code published

  4. 05:30 UTC

    CVE published

    Vulnerability disclosed publicly

  5. 13:13 UTC

    CVE ID reserved

    Identifier reserved by the CNA

Pro API

Automate this intelligence

Confidence, exploit status, sensor telemetry, PoCs, scanner integrations, mentions, and tags are available programmatically for VM, SOC, and CTI workflows.

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  • Evidence confidence and provenance
  • First-party sensor telemetry
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  • Automation-ready JSON delivery

GET /api/v2/pro/kevs/CVE-2026-105134

Free JSON includes basic KEV fields 
{
  "cve_id": "CVE-2026-105134",
  "confidence": "High",
  "cvss_score": 10.0,
  "cvss_estimated": false,
  "epss_score": 0.01843,
  "exploit_status": {
    "exploited_in_the_wild": true,
    "active_exploitation_observed": false
  },
  "sensor_telemetry": { "attempts": 0, "sensors": 0 }
}