Is CVE-2026-105133 actively exploited?

Yes. Previdian tracks CVE-2026-105133 as a known exploited vulnerability. Confidence is high.

What exploitation activity has Previdian observed?

Previdian has not yet recorded sensor-observed exploitation attempts for CVE-2026-105133. Our sensors continue to monitor for activity targeting this CVE.

Which versions are affected?

CVE-2026-105133 affects Ahsay AhsayCBS. Previdian lists 4 version rows; examples include 10.3.0, 10.3.1, and 10.3.2.

No. CVE-2026-105133 is not currently listed in CISA KEV.

CVE-2026-105133 Exploited in the Wild — AhsayCBS

Decision summary

What security teams need to know first

Direct answers before the deeper technical record.

What it is

CVE-2026-105133 is an unauthenticated vulnerability affecting Ahsay AhsayCBS. A vulnerability was detected in Ahsay AhsayCBS up to 10.3.2. This affects the function checkSysPwd of the file...

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 vulnerability was detected in Ahsay AhsayCBS up to 10.3.2

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.

Vendor Product Affected Status

Ahsay Affected

AhsayCBS

10.3.0 10.3.1 10.3.2

Affected

Ahsay Unaffected

AhsayCBS

10.3.4

Unaffected

View vendor advisory

Published: 04 Oct 2026
Exploitation Reported: 09 Oct 2026
Attack vector: Remote
Complexity: Low
Privileges: None
User interaction: None

CVE References

CVE Record CVE.org · CVE Record https://www.cve.org/CVERecord?id=CVE-2026-105133
Patch — ahsay.com ahsay.com · Patch https://www.ahsay.com/en/support/help-centre/release-notes/cbs/v10.3.4
CVE-2026-105133 | CVE Analysis and Report vuldb.com · Third-Party Advisory https://vuldb.com/cve/CVE-2026-105133
Submit #942688 | Ahsay Systems Corporation Limited AhsayCBS 10.0.3 Authentication Bypass vuldb.com · Third-Party Advisory https://vuldb.com/submit/942688
VDB-413350 | Ahsay AhsayCBS API ApiStructsAction.java checkSysPwd improper authentication vuldb.com · Technical Description https://vuldb.com/vuln/413350
VDB-413350 | CTI Indicators (IOB, IOC, IOA) vuldb.com · Signature https://vuldb.com/vuln/413350/cti

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.

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 09:53 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

6.9 Medium

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:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:P

EPSS

0.4%

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

Weaknesses

Improper Authentication CWE-287

Recent mention · The Hacker News

09 Oct 2026

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 6.9 Medium

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

CVSS v3.1 7.3 High

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

CVSS v3.0 7.3 High

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

CVSS v2.0 7.5 High

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

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.

Timeline

From disclosure to observed exploitation

09 Oct 2026
13:32 UTC

KEV confirmed by The Hacker News

Exploitation attested by an external source
09 Oct 2026
09:53 UTC

Added to Previdian KEV Feed

High-confidence, third-party attested exploitation
04 Oct 2026
05:15 UTC

CVE published

Vulnerability disclosed publicly
03 Oct 2026
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
PoC and scanner references
Affected versions and enrichment
Automation-ready JSON delivery

GET /api/v2/pro/kevs/CVE-2026-105133

Free JSON includes basic KEV fields

{
  "cve_id": "CVE-2026-105133",
  "confidence": "High",
  "cvss_score": 6.9,
  "cvss_estimated": false,
  "epss_score": 0.00383,
  "exploit_status": {
    "exploited_in_the_wild": true,
    "active_exploitation_observed": false
  },
  "sensor_telemetry": { "attempts": 0, "sensors": 0 }
}

CVE-2026-105133

A vulnerability was detected in Ahsay AhsayCBS up to 10.3.2

CVE References

Exploited in the wild

Known exploited vulnerability sources

Observed signals

Scanner coverage

Virtual patch status

Weaknesses

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

All CVSS Scores

All Mentions

KEV confirmed by The Hacker News

Added to Previdian KEV Feed

CVE published

CVE ID reserved

Automate this intelligence