A critical buffer overflow in IBM DataPower Gateway versions 10.5 through 11.0 allows remote attackers to execute code without authentication.
Key points
- IBM DataPower Gateway versions 10.5, 10.6, and 11.0 contain a critical buffer overflow vulnerability.
- The flaw, tracked as CVE-2026-14992, carries a CVSS score of 9.8.
- Attackers can exploit the issue remotely without needing valid credentials.
IBM DataPower Gateway users must update their systems immediately to address a critical security flaw. The vulnerability allows unauthenticated remote attackers to execute arbitrary code on the gateway.
What happened
The National Vulnerability Database (NVD) has recorded CVE-2026-14992 as a critical issue affecting IBM DataPower Gateway. The vulnerability is classified as a buffer overflow, corresponding to CWE-787. This type of flaw occurs when a program writes data beyond the boundaries of a fixed-length buffer, potentially overwriting adjacent memory. In this specific case, the buffer overflow enables an attacker to take control of the affected system.
The NVD assigns the vulnerability a CVSS base score of 9.8, the highest possible rating. This score indicates that the flaw is easily exploitable and has a severe impact on confidentiality, integrity, and availability. The attack vector is network-based, meaning no local access is required. Furthermore, the vulnerability requires no user interaction and no authentication, making it particularly dangerous for internet-facing devices.
Why it matters
Organizations using specific versions of IBM DataPower Gateway are exposed to remote code execution. The affected software versions include 10.5.0.0 through 10.5.0.22, 10.6.1 through 10.6.6, and 10.6.0.0 through 10.6.0.10. Additionally, version 11.0.0.0 through 11.0.0.2 is vulnerable. DataPower Gateways are often deployed at network perimeters to manage API traffic and enforce security policies.
A compromise of these devices could allow attackers to intercept, modify, or block traffic. It could also serve as a foothold for deeper network intrusion. Because the flaw requires no authentication, automated scanning tools could potentially exploit it at scale. Security teams should prioritize patching these systems to prevent unauthorized access.
The fix
- Upgrade IBM DataPower Gateway to a version not listed in the affected ranges.
- Isolate vulnerable instances from untrusted networks until patched.
- Monitor logs for signs of exploitation attempts.
Background: Buffer overflow vulnerabilities
A buffer overflow occurs when data exceeds the allocated memory space, spilling into adjacent areas. This corruption allows attackers to execute arbitrary code or crash the system. You reduce risk by using memory-safe languages, enforcing strict input validation, and enabling compiler protections like stack canaries.
Read the full guide: Buffer Overflow Vulnerabilities: How Memory Corruption Breaks Code
What to do and how to stay safe: IBM
- Testing catches regressions where a fix breaks dependent software components.
- The process fails if your test environment does not match production hardware or configurations.
- Prioritize testing based on business impact, not just the severity of the vulnerability.
Patch testing prevents regressions but requires careful environment management and prioritization. Start by automating tests for your most critical systems to reduce manual effort and deployment risk.
Step-by-step guide: Patch Testing: How to Verify Fixes Without Breaking Your Systems
General security guidance from the Crypt Weekly newsroom. It is not confirmed advice from the organisations named in this story.
Frequently asked questions
What is CVE-2026-14992?
It is a critical buffer overflow vulnerability in IBM DataPower Gateway that allows remote code execution.
Which IBM DataPower versions are affected?
Versions 10.5.0.0-10.5.0.22, 10.6.1-10.6.6, 10.6.0.0-10.6.0.10, and 11.0.0.0-11.0.0.2 are vulnerable.
Is authentication required to exploit this flaw?
No, the vulnerability can be exploited remotely without any authentication.
