IBM DataPower Gateway: Out-of-bounds write allows remote code execution
Summary
IBM DataPower Gateway contains an out-of-bounds write (CWE-787) that can allow a remote attacker to execute arbitrary code. The NVD and IBM rate it CVSS 3.1 8.1 (High). The vector requires high attack complexity but no privileges and no user interaction, so internet-exposed gateways are the priority.
Affected
- IBM DataPower Gateway 10.5.0.0 through 10.5.0.22
- IBM DataPower Gateway 10.6.0.0 through 10.6.0.10
- IBM DataPower Gateway 10.6.1 through 10.6.6 (10.6CD)
- IBM DataPower Gateway 11.0.0.0 through 11.0.0.2
Fixed in
- 10.5.0.23 for the 10.5.0 branch
- 10.6.0.11 for the 10.6.0 branch
- 11.0.0.3 for the 10.6CD and 11.0.0 branches
Verify the exact build strings in the IBM Security Bulletin before rollout.
Workaround
Unknown. IBM has not published a vendor workaround for this CVE in the sources reviewed. Interim hardening that applies to the batch: limit access to the DataPower Web UI to trusted administrators and restrict network access to the gateway service ports until the patch is installed.
Exploitation
- No public exploitation known in the sources reviewed.
- CISA SSVC assessment: exploitation none, not automatable, total technical impact.
- Trigger details are not public.
- KEV status not verified directly against the CISA catalogue.
Our recommendation
- Inventory all DataPower instances and their versions and flag any below the fixed builds.
- Patch internet-facing instances first and restrict Web UI and management access until patched.
- Plan a move off 10.5.x, which has reached end of support.
- Monitor the IBM bulletin and the CISA KEV catalogue for changes.
Public exploits
PoC-in-GitHub, Metasploit and Exploit-DB list nothing for this CVE.
Research sources
- IBM Security Bulletin: IBM DataPower Gateway affected by multiple CVEs www.ibm.com
- IBM DataPower Gateway 10.5.0.x fix packs www.ibm.com
- IBM DataPower Gateway 11.0.0.x fix packs www.ibm.com
- IBM DataPower Gateway firmware fix packs and update packages www.ibm.com
- Ionix threat center: CVE-2026-15784 www.ionix.io
- SecurityOnline: IBM DataPower Gateway vulnerabilities securityonline.info
Researched and written up in English and German by an AI (Claude by Anthropic) based on NVD, CISA, EPSS and the sources listed. The vendor information is authoritative. Researched on 1 Nov 2026, 20:33.
Original description (NVD)
IBM DataPower Gateway 10.5.0.0 through 10.5.0.22, 10.6.1 through 10.6.6, 10.6.0.0 through 10.6.0.10, and 11.0.0.0 through 11.0.0.2 could allow a remote attacker to execute arbitrary code due to an out-of-bounds write.
NVD references (1)
Sources
The tracker combines official, freely usable data sources – updated continuously:
- NVD (NIST) – CVEs, rating (CVSS), affected products
- CISA KEV – vulnerabilities confirmed by CISA as actively exploited
- CISA Vulnrichment – CISA assessment (SSVC) in the official CVE record
- FIRST EPSS – probability of exploitation
- Microsoft MSRC – Patch Tuesday: vulnerabilities, severity, updates
- PoC-in-GitHub – public proof-of-concept repositories
- Metasploit (Rapid7) – modules of the Metasploit Framework
- Exploit-DB (OffSec) – archive of public exploits (links only)
- Patch days: official vendor pages (linked per vendor) (Vendor patch days)
This product uses data from the NVD API but is not endorsed or certified by the NVD. EPSS data © FIRST.org.
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