CVE-2026-82340Network attack vector

Unauthenticated code execution via CAS message deserialization

Published Sep 18, 2026 · Updated Sep 18, 2026

Insecure deserialization in IBM Guardium Data Protection 12.2's CAS listener allows remote attackers to execute code through TCP port 16017. The listener deserializes crafted messages and permits attacker-controlled reflective method dispatch inside the appliance. Exploitation requires unauthenticated network reachability to the cleartext CAS service and grants code execution with appliance-process privileges.

CVSS severity9.8
Critical
EPSS probability0.69%
Next 30 days · Oct 19, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Insecure deserialization in IBM Guardium Data Protection 12.2's CAS listener allows remote attackers to execute code through TCP port 16017. The listener deserializes crafted messages and permits attacker-controlled reflective method dispatch inside the appliance. Exploitation requires unauthenticated network reachability to the cleartext CAS service and grants code execution with appliance-process privileges.

The record

CVE
CVE-2026-82340
Published
Sep 18, 2026
Updated
Sep 18, 2026
Vendor
IBM
Product
Guardium Data Protection
Classifications
CWE-94, T1190
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Sep 18, 2026CVE publishedPublication date reported by the CVE source.
  2. Sep 18, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=12.2

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

IBM · Guardium Data Protectionversion=12.2

Published CVSS scores

9.8IBMCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Activity data is delayed. The latest report is Sep 28, 2026.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 22, 2026Sep 28, 2026
Latest reporting daySep 28, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-94Improper Control of Generation of Code ('Code Injection')
T1190Exploit Public-Facing Application

Public exploit references

No public exploit references are available in this record.

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Technologies

Your stack

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Your stack

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