DataPower Gateway 10.6CD: Stack-based Buffer Overflow
CVE-2026-15781 is a high-severity stack-based buffer overflow vulnerability in DataPower Gateway 10.6CD from IBM, with a CVSS 3.1 base score of 8.0 out of 10. It can be exploited remotely over the network by an attacker with administrator privileges, without any action from a user. Affected DataPower Gateway 10.6CD versions: 10.6.1 through 10.6.6. The record does not name a fixed version, so check the vendor advisory. There is no confirmed exploitation so far. EPSS estimates a 0.39% chance of exploitation within 30 days, which is low compared with other CVEs.
High severity with no evidence of exploitation so far.
What to do
- Update Datapower Gateway to 10.5.0.23 or 10.6.0.11 or 11.0.0.3, whichever matches your release line, or a later version.
- Read the advisory on ibm.com for workarounds and exact fixed builds.
Affected products and versions
| Vendor | Product | Affected versions | Fixed in |
|---|---|---|---|
| IBM | DataPower Gateway 10.6CD | 10.6.1 through 10.6.6 | Not stated |
| IBM | DataPower Gateway 10.6.0 | 10.6.0.0 through 10.6.0.10 | Not stated |
| IBM | DataPower Gateway 11.0.0 | 11.0.0.0 through 11.0.0.2 | Not stated |
| IBM | DataPower Gateway 10.5.0 | 10.5.0.0 through 10.5.0.22 | Not stated |
| IBM | Datapower Gateway | 10.5.0.0 up to, but not including, 10.5.0.23; 10.6.0.0 up to, but not including, 10.6.0.11; 10.6.1.0 up to, but not including, 11.0.0.3; 11.0.0.0 up to, but not including, 11.0.0.3 | 10.5.0.23, 10.6.0.11, 11.0.0.3 |
Version data comes from the organisation that assigned the CVE. Confirm against the vendor advisory before deciding you are unaffected.
How the severity score breaks down
- Attack vector
- NetworkCan be exploited remotely over a network, including the internet.
- Attack complexity
- HighSuccess depends on conditions outside the attacker's control.
- Privileges required
- HighAdministrator-level access is required first.
- User interaction
- NoneNo action by a victim is required.
- Scope
- ChangedThe attack can reach beyond the vulnerable component into other systems.
- Confidentiality
- HighAll data handled by the component can be read.
- Integrity
- HighData or code can be modified at will.
- Availability
- HighThe component can be taken down completely.
Vector: CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:C/C:H/I:H/A:H. Scored by CNA (us.ibm.com).
Official description
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 authenticated attacker to execute arbitrary code due to a buffer overflow.
Source: the CVE record as published by its numbering authority, via NVD and CVE.org.
The underlying weakness: Stack-based Buffer Overflow
The product writes past the end of a buffer that was allocated on the stack.
How developers prevent this class of flaw
- Use automatic buffer overflow detection mechanisms that are offered by certain compilers or compiler extensions. Examples include: the Microsoft Visual Studio /GS flag, Fedora/Red Hat FORTIFY_SOURCE GCC flag, StackGuard, and ProPolice, which provide various mechanisms including canary-based detection and range/index checking. D3-SFCV (Stack Frame Canary Validation) from D3FEND discusses canary-based detection in detail.
- Use an abstraction library to abstract away risky APIs. Not a complete solution.
- Implement and perform bounds checking on input.
Timeline
- CVE record published.
- CISA published its SSVC assessment (exploitation: none, automatable: no, technical impact: total).
- Record last changed materially (score, affected products, status or references).
References
Advisories
Other vulnerabilities in DataPower Gateway 10.6CD
- 7.5 High severity
- 9.8 Critical severity
- 9.8 Critical severity
- 8.2 High severity
- 9.8 Critical severity
- 9.1 Critical severity
Recent Stack-based Buffer Overflow vulnerabilities
- 7.1 High severity
- 9.8 Critical severity
- 7.5 High severity
- 8.8 High severity
- 9.8 Critical severity
- 9.8 Critical severity
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