IBM DataPower Gateway: Heap-based buffer overflow enables remote code execution
Summary
IBM DataPower Gateway contains a heap-based buffer overflow caused by improper bounds checking. According to the CVE description, an unauthenticated remote attacker can overflow the buffer and execute arbitrary code on the system. The CVSS base score is 9.8 (critical), and the vulnerability is in 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.
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
- IBM DataPower Gateway 10.5.0.23 or later
- IBM DataPower Gateway 10.6.0.11 or later
- IBM DataPower Gateway 11.0.0.3 or later (also for 10.6.1 to 10.6.6)
Workaround
Unknown. IBM has not published a workaround in the sources reviewed. Restricting network access to the appliance reduces exposure until it is patched.
Exploitation
- Not listed as known exploited (KEV).
- CISA SSVC assessment: exploitation none, automatable yes, technical impact total.
- No public proof of concept found in the sources reviewed; this does not prove that none exists.
Our recommendation
- Check whether any DataPower Gateway instance is installed and identify its exact version.
- Upgrade affected instances to the fixed versions listed above as a priority.
- Until patched, do not expose the appliance directly to the internet and restrict management and service ports to known sources.
- Review logs for crashes, restarts or unusual requests.
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
- Rapid7 record via Vulners vulners.com
- VulDB entry vuldb.com
- Strix CVE details www.strix.ai
- CVE threat intelligence cve.threatint.com
- HOL Guard CVE page hol.org
- The Hacker Wire advisory www.thehackerwire.com
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 30 Oct 2026, 20:31.
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 is vulnerable to a heap-based buffer overflow, caused by improper bounds checking. An unauthenticated remote attacker could overflow the buffer and execute arbitrary code on the system.
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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