IBM DataPower Gateway: Denial of Service via heap-based buffer overflow
Summary
IBM DataPower Gateway versions 10.5.0.0 to 10.5.0.22, 10.6.0.0 to 10.6.0.10, 10.6.1 to 10.6.6 and 11.0.0.0 to 11.0.0.2 contain a heap-based buffer overflow (CWE-787). A remote attacker can exploit it without authentication to crash the gateway and cause a Denial of Service. Because DataPower often sits at the edge of integration and API traffic, a crash can disrupt every service behind it.
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 branch: 10.5.0.23
- 10.6.0 branch: 10.6.0.11
- 10.6CD branch: 11.0.0.3
- 11.0.0 branch: 11.0.0.3
- Note: the IBM bulletin headline names 11.0.0.3, 10.6.0.11 and 10.5.0.23. The per-branch mapping was taken from the CVE record and an aggregator and should be confirmed on the IBM bulletin page before rollout.
Workaround
Unknown. No vendor-documented workaround was found. Ask IBM support or check the bulletin for updates.
Exploitation
- No known exploitation in the wild found.
- No public proof of concept found.
- EPSS about 0.003 (low predicted exploitation probability).
- CISA SSVC assessment: Exploitation none, Automatable yes, Technical Impact partial.
Our recommendation
- Upgrade to the fixed release for your branch as soon as possible.
- Patch the whole IBM bulletin, which covers about 20 other DataPower CVEs, some rated higher.
- Check whether DataPower is internet-facing or reachable from untrusted networks and restrict access if it is not needed there.
- Monitor gateway availability and logs for crashes or unusual requests.
Public exploits
PoC-in-GitHub, Metasploit and Exploit-DB list nothing for this CVE.
Research sources
- IBM Security Bulletin (node 7289775) www.ibm.com
- IBM multi-CVE Security Bulletin www.ibm.com
- CVE record mirror (threatint) cve.threatint.com
- Rapid7 via Vulners vulners.com
- Fix mapping (aggregator) cve.imfht.com
- Exploitation and KEV status (Strix) www.strix.ai
- Red Packet exposure note www.redpacketsecurity.com
- SecurityOnline overview of DataPower 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, 16:52.
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 cause a denial of service due to a heap-based buffer overflow.
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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