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HIGH severity

CVE-2026-80434

HIGH

CVE-2026-80434 is a high-severity (CVSS 7.4) CWE-639 vulnerability in ibm datastage on cloud pak for data. O3 Security detects and blocks CVE-2026-80434 exploitation at runtime via eBPF exploit-chain detection and L7 egress monitoring, even on unpatched systems.

IBM DataStage on Cloud Pak for Data 5.4.0.0 could allow a remote authenticated attacker to manipulate runtime caches and cause a denial of service due to an insecure direct object reference.

Published
Sep 10, 2026
Updated
Sep 10, 2026
Affected
1 product
Patched
See advisory
Exploits
None indexed
Exploitation data as of Sep 10, 2026 · OSV.dev, NVD, FIRST.org (EPSS)

Description

IBM DataStage on Cloud Pak for Data 5.4.0.0 could allow a remote authenticated attacker to manipulate runtime caches and cause a denial of service due to an insecure direct object reference.

Affected Products

1 product · 1 configurations
Application
datastage on cloud pak for dataibm
1 version
5.4.0.0

Detection & mitigation playbook

Vendor / appliance
  1. Detect

    Inventory every ibm datastage on cloud pak for data deployment and check each version against the affected-products list above. Because the exploit targets the running system rather than your application code, also watch for exploitation at the network and runtime layer — O3 flags the exploit behaviour from runtime telemetry and egress traffic even before a vulnerable build is confirmed.

  2. Remediation status

    No patch has shipped for CVE-2026-80434 yet — track the ibm datastage on cloud pak for data advisory for a fixed release and apply the workarounds below in the meantime.

  3. Mitigate without a patch

    Cut exposure now: restrict the management/admin interface to trusted networks, segment the device, and apply the vendor's recommended configuration mitigations and any WAF/IPS signature. O3's runtime protection blocks the exploit chain at execution, holding the line on unpatched or end-of-life systems until you can patch.

  4. How O3 protects you

    O3 detects and blocks CVE-2026-80434 exploitation at runtime: eBPF exploit-chain detection, plus L7 egress monitoring that catches the post-exploitation callback and severs the attacker's outbound channel.

Tailored to CVE-2026-80434. Runtime protection reduces exposure until a permanent patch is applied and verified — it complements patching, it doesn't replace it.

Frequently Asked Questions

IBM DataStage on Cloud Pak for Data 5.4.0.0 could allow a remote authenticated attacker to manipulate runtime caches and cause a denial of service due to an insecure direct object reference.
O3 Security · Runtime Protection

Is CVE-2026-80434 being exploited in your environment?

O3's eBPF runtime sensors and L7 egress monitoring detect and block the CVE-2026-80434 exploit chain at execution — protecting unpatched and end-of-life systems until the vendor patch is applied.

CVE-2026-80434: High 7.4 severity | O3 Security