Security Bulletin
Summary
IBM DataPower Gateway has addressed multiple vulnerabilities versions 11.0.0.3, 10.6.0.11, and 10.5.0.23
Vulnerability Details
CVEID: CVE-2026-16177
DESCRIPTION: IBM DataPower Gateway could allow a remote authenticated attacker to obtain sensitive information due to an out-of-bounds read.
CWE: CWE-125: Out-of-bounds Read
CVSS Source: IBM
CVSS Base score: 5.3
CVSS Vector: (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N)
CVEID: CVE-2026-16179
DESCRIPTION: IBM DataPower Gateway could allow an attacker to cause a heap buffer underwrite and potentially crash the service.
CWE: CWE-124: Buffer Underwrite ('Buffer Underflow')
CVSS Source: IBM
CVSS Base score: 7.5
CVSS Vector: (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H)
CVEID: CVE-2026-13257
DESCRIPTION: IBM DataPower Gateway could allow an authenticated user to forge signature requests due to improper verification of data authenticity.
CWE: CWE-345: Insufficient Verification of Data Authenticity
CVSS Source: IBM
CVSS Base score: 6.5
CVSS Vector: (CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N)
CVEID: CVE-2026-15781
DESCRIPTION: IBM DataPower Gateway could allow a remote authenticated attacker to execute arbitrary code due to a buffer overflow.
CVSS Source: IBM
CVSS Base score: 8
CVSS Vector: (CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:C/C:H/I:H/A:H)
CVEID: CVE-2026-14508
DESCRIPTION: IBM DataPower Gateway could allow a remote attacker to cause a denial of service and obtain sensitive information due to a use-after-free.
CWE: CWE-416: Use After Free
CVSS Source: IBM
CVSS Base score: 6.5
CVSS Vector: (CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:H)
CVEID: CVE-2026-15822
DESCRIPTION: IBM DataPower Gateway could allow a remote attacker to cause a denial of service due to improper memoization of GraphQL fragment spreads.
CWE: CWE-405: Asymmetric Resource Consumption (Amplification)
CVSS Source: IBM
CVSS Base score: 7.5
CVSS Vector: (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H)
CVEID: CVE-2026-16176
DESCRIPTION: IBM DataPower Gateway could allow a remote attacker to cause a denial of service due to improper validation of the length field during memory reallocation.
CWE: CWE-770: Allocation of Resources Without Limits or Throttling
CVSS Source: IBM
CVSS Base score: 7.5
CVSS Vector: (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H)
CVEID: CVE-2026-13258
DESCRIPTION: IBM DataPower Gateway is vulnerable to cross-site scripting. This vulnerability allows an authenticated user to embed arbitrary JavaScript code in the Web UI thus altering the intended functionality potentially leading to credentials disclosure within a trusted session.
CWE: CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
CVSS Source: IBM
CVSS Base score: 5.4
CVSS Vector: (CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N)
CVEID: CVE-2026-16167
DESCRIPTION: IBM DataPower Gateway could allow a remote attacker to cause a denial of service due to improper bounds checking.
CWE: CWE-787: Out-of-bounds Write
CVSS Source: IBM
CVSS Base score: 7.5
CVSS Vector: (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H)
CVEID: CVE-2026-14497
DESCRIPTION: IBM DataPower Gateway could allow a remote authenticated attacker to bypass security restrictions due to improper verification of cryptographic signatures.
CWE: CWE-347: Improper Verification of Cryptographic Signature
CVSS Source: IBM
CVSS Base score: 8.1
CVSS Vector: (CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N)
CVEID: CVE-2026-16165
DESCRIPTION: IBM DataPower Gateway could allow a remote attacker to cause a denial of service due to a null pointer dereference.
CWE: CWE-476: NULL Pointer Dereference
CVSS Source: IBM
CVSS Base score: 7.5
CVSS Vector: (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H)
CVEID: CVE-2026-16182
DESCRIPTION: IBM DataPower Gateway could allow an attacker to cause a denial of service due to a NULL pointer dereference in GraphQL variable processing.
CWE: CWE-476: NULL Pointer Dereference
CVSS Source: IBM
CVSS Base score: 5.9
CVSS Vector: (CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H)
CVEID: CVE-2026-14991
DESCRIPTION:
IBM DataPower Gateway is vulnerable to a buffer overflow, caused by improper bounds checking. A local user could overflow the buffer and execute arbitrary code on the system.
CWE: CWE-787: Out-of-bounds Write
CVSS Source: IBM
CVSS Base score: 9.8
CVSS Vector: (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H)
CVEID: CVE-2026-16159
DESCRIPTION: IBM DataPower Gateway could allow a remote attacker to obtain sensitive information and cause a denial of service due to an out-of-bounds write.
CWE: CWE-787: Out-of-bounds Write
CVSS Source: IBM
CVSS Base score: 8.6
CVSS Vector: (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:H)
CVEID: CVE-2026-15824
DESCRIPTION: IBM DataPower Gateway could allow a remote attacker to cause a denial of service due to a heap-based buffer overflow.
CWE: CWE-787: Out-of-bounds Write
CVSS Source: IBM
CVSS Base score: 8.2
CVSS Vector: (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:H)
CVEID: CVE-2026-14509
DESCRIPTION: IBM DataPower Gateway could allow a remote attacker to cause a denial of service due to algorithmic complexity in linked-list traversal.
CWE: CWE-400: Uncontrolled Resource Consumption
CVSS Source: IBM
CVSS Base score: 5.9
CVSS Vector: (CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H)
CVEID: CVE-2026-14905
DESCRIPTION: IBM DataPower Gateway is vulnerable to an XML external entity injection (XXE) attack when processing XML data. A remote attacker could exploit this vulnerability to expose sensitive information or consume memory resources.
CWE: CWE-611: Improper Restriction of XML External Entity Reference
CVSS Source: IBM
CVSS Base score: 8.2
CVSS Vector: (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:L)
CVEID: CVE-2026-14269
DESCRIPTION: IBM DataPower Gateway 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.
CVSS Source: IBM
CVSS Base score: 9.8
CVSS Vector: (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H)
CVEID: CVE-2026-16163
DESCRIPTION: IBM DataPower Gateway could allow a remote attacker to cause memory corruption due to an out-of-bounds write.
CWE: CWE-787: Out-of-bounds Write
CVSS Source: IBM
CVSS Base score: 8.6
CVSS Vector: (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:H)
CVEID: CVE-2026-16111
DESCRIPTION: IBM DataPower Gateway could allow an attacker to cause a denial of service due to a type confusion flaw.
CVSS Source: IBM
CVSS Base score: 7.5
CVSS Vector: (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H)
CVEID: CVE-2026-14992
DESCRIPTION: IBM DataPower Gateway vulnerable to buffer overflow
CWE: CWE-787: Out-of-bounds Write
CVSS Source: IBM
CVSS Base score: 9.8
CVSS Vector: (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H)
CVEID: CVE-2026-15819
DESCRIPTION: IBM DataPower Gateway could allow a remote attacker to cause a denial of service due to out-of-bounds memory access caused by a strict-weak-ordering violation in a sorting comparator.
CWE: CWE-787: Out-of-bounds Write
CVSS Source: IBM
CVSS Base score: 7.5
CVSS Vector: (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H)
CVEID: CVE-2026-14496
DESCRIPTION: IBM DataPower Gateway could allow a remote attacker to cause a denial of service due to a heap-based buffer overflow.
CWE: CWE-125: Out-of-bounds Read
CVSS Source: IBM
CVSS Base score: 8.2
CVSS Vector: (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:H)
CVEID: CVE-2026-16161
DESCRIPTION: IBM DataPower Gateway could allow a remote attacker to cause a denial of service due to an out-of-bounds read.
CWE: CWE-125: Out-of-bounds Read
CVSS Source: IBM
CVSS Base score: 7.5
CVSS Vector: (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H)
CVEID: CVE-2026-15762
DESCRIPTION: IBM DataPower Gateway could allow a remote attacker to execute arbitrary code due to an out-of-bounds write.
CWE: CWE-787: Out-of-bounds Write
CVSS Source: IBM
CVSS Base score: 9.8
CVSS Vector: (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H)
CVEID: CVE-2026-14999
DESCRIPTION: IBM DataPower Gateway could allow a remote attacker to bypass authentication by forging valid JSON Web Signatures due to improper verification of cryptographic signatures.
CWE: CWE-347: Improper Verification of Cryptographic Signature
CVSS Source: IBM
CVSS Base score: 7.4
CVSS Vector: (CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N)
CVEID: CVE-2026-14502
DESCRIPTION: IBM DataPower Gateway could allow a remote attacker to obtain administrative access due to failure to reject empty passwords during LDAP authentication.
CWE: CWE-287: Improper Authentication
CVSS Source: IBM
CVSS Base score: 9.8
CVSS Vector: (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H)
CVEID: CVE-2026-16170
DESCRIPTION: IBM DataPower Gateway could allow a remote attacker to cause a denial of service due to a heap buffer overflow.
CWE: CWE-787: Out-of-bounds Write
CVSS Source: IBM
CVSS Base score: 7.5
CVSS Vector: (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H)
CVEID: CVE-2026-16164
DESCRIPTION: IBM DataPower Gateway could allow a remote attacker to cause a denial of service due to a buffer overflow.
CWE: CWE-787: Out-of-bounds Write
CVSS Source: IBM
CVSS Base score: 7.5
CVSS Vector: (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H)
CVEID: CVE-2026-16340
DESCRIPTION: IBM DataPower Gateway could allow a remote attacker to execute arbitrary code due to an out-of-bounds write in the RFC2047 encoded-word parser.
CWE: CWE-787: Out-of-bounds Write
CVSS Source: IBM
CVSS Base score: 9.8
CVSS Vector: (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H)
CVEID: CVE-2026-16178
DESCRIPTION: IBM DataPower Gateway could allow a remote attacker to cause a denial of service due to improper input validation.
CWE: CWE-787: Out-of-bounds Write
CVSS Source: IBM
CVSS Base score: 7.5
CVSS Vector: (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H)
CVEID: CVE-2026-14888
DESCRIPTION: IBM DataPower Gateway could allow a remote attacker to execute arbitrary code due to a heap-based buffer overflow.
CWE: CWE-122: Heap-based Buffer Overflow
CVSS Source: IBM
CVSS Base score: 8.1
CVSS Vector: (CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H)
CVEID: CVE-2026-14988
DESCRIPTION: IBM DataPower Gateway vulnerable to buffer overflow
CWE: CWE-125: Out-of-bounds Read
CVSS Source: IBM
CVSS Base score: 6.5
CVSS Vector: (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:L)
CVEID: CVE-2026-14273
DESCRIPTION: IBM DataPower Gateway could allow a local attacker to obtain sensitive information due to improper authorization.
CWE: CWE-863: Incorrect Authorization
CVSS Source: IBM
CVSS Base score: 6.5
CVSS Vector: (CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:N/A:N)
CVEID: CVE-2026-15784
DESCRIPTION: IBM DataPower Gateway could allow a remote attacker to execute arbitrary code due to an out-of-bounds write.
CWE: CWE-787: Out-of-bounds Write
CVSS Source: IBM
CVSS Base score: 8.1
CVSS Vector: (CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H)
CVEID: CVE-2026-16181
DESCRIPTION: IBM DataPower Gateway could allow a remote attacker to bypass security restrictions due to improper authorization.
CWE: CWE-285: Improper Authorization
CVSS Source: IBM
CVSS Base score: 7.4
CVSS Vector: (CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N)
Affected Products and Versions
| Affected Product(s) | Version(s) |
| IBM DataPower Gateway 10.6CD | 10.6.1 - 10.6.6 |
| IBM DataPower Gateway 10.6.0 | 10.6.0.0 - 10.6.0.10 |
| IBM DataPower Gateway 11.0.0 | 11.0.0.0 - 11.0.0.2 |
| IBM DataPower Gateway 10.5.0 | 10.5.0.0 - 10.5.0.22 |
Remediation/Fixes
IBM strongly advises upgrading as soon as possible.
Known Issue: DT499224
| Affected Versions | Fixed in Release |
| IBM DataPower Gateway 10.6CD 10.6.1 - 10.6.6 | 11.0.0.3 |
| IBM DataPower Gateway 10.6.0 10.6.0.0 - 10.6.0.10 | 10.6.0.11 |
| IBM DataPower Gateway 11.0.0 11.0.0.0 - 11.0.0.2 | 11.0.0.3 |
| IBM DataPower Gateway 10.5.0 10.5.0.0 - 10.5.0.22 | 10.5.0.23 |
Workarounds and Mitigations
None
Get Notified about Future Security Bulletins
References
Acknowledgement
Change History
28 Sep 2026: Initial Publication
*The CVSS Environment Score is customer environment specific and will ultimately impact the Overall CVSS Score. Customers can evaluate the impact of this vulnerability in their environments by accessing the links in the Reference section of this Security Bulletin.
Disclaimer
According to the Forum of Incident Response and Security Teams (FIRST), the Common Vulnerability Scoring System (CVSS) is an "industry open standard designed to convey vulnerability severity and help to determine urgency and priority of response." IBM PROVIDES THE CVSS SCORES ""AS IS"" WITHOUT WARRANTY OF ANY KIND, INCLUDING THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. CUSTOMERS ARE RESPONSIBLE FOR ASSESSING THE IMPACT OF ANY ACTUAL OR POTENTIAL SECURITY VULNERABILITY. In addition to other efforts to address potential vulnerabilities, IBM periodically updates the record of components contained in our product offerings. As part of that effort, if IBM identifies previously unidentified packages in a product/service inventory, we address relevant vulnerabilities regardless of CVE date. Inclusion of an older CVEID does not demonstrate that the referenced product has been used by IBM since that date, nor that IBM was aware of a vulnerability as of that date. We are making clients aware of relevant vulnerabilities as we become aware of them. "Affected Products and Versions" referenced in IBM Security Bulletins are intended to be only products and versions that are supported by IBM and have not passed their end-of-support or warranty date. Thus, failure to reference unsupported or extended-support products and versions in this Security Bulletin does not constitute a determination by IBM that they are unaffected by the vulnerability. Reference to one or more unsupported versions in this Security Bulletin shall not create an obligation for IBM to provide fixes for any unsupported or extended-support products or versions.
Document Location
Worldwide
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Document Information
Modified date:
28 September 2026
Initial Publish date:
28 September 2026
UID
ibm17289775