CVE-2026-12733Network attack vectorHinoki check available

Unauthenticated service interruption via HTTP/2 resource exhaustion

Published Jul 30, 2026 · Updated Jul 30, 2026

Resource exhaustion in IBM DataPower Gateway allows remote attackers to interrupt gateway service through HTTP/2 requests. The HTTP/2 request-processing path fails to enforce resource limits, but IBM has not disclosed the exhausted resource, triggering request pattern, or whether the result is a hang, crash, or reload. No authentication or user interaction is required; only deployments with HTTP/2 enabled expose the vulnerable path, and the reported consequence is limited to availability.

CVSS severity7.5
High
EPSS probability0.31%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkAvailable
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Summary

What happened

Resource exhaustion in IBM DataPower Gateway allows remote attackers to interrupt gateway service through HTTP/2 requests. The HTTP/2 request-processing path fails to enforce resource limits, but IBM has not disclosed the exhausted resource, triggering request pattern, or whether the result is a hang, crash, or reload. No authentication or user interaction is required; only deployments with HTTP/2 enabled expose the vulnerable path, and the reported consequence is limited to availability.

The record

CVE
CVE-2026-12733
Published
Jul 30, 2026
Updated
Jul 30, 2026
Vendor
IBM
Product
IBM DataPower Gateway
Classifications
CWE-770, T1499
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Jul 30, 2026CVE publishedPublication date reported by the CVE source.
  2. Jul 30, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=10.5.0.0 <=10.5.0.21
  2. Affected versionversion=10.6.0.0 <=10.6.0.9
  3. Affected versionversion=10.6.1 <=10.6.6
  4. Affected versionversion=11.0.0.0 <=11.0.0.1

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

IBM · IBM DataPower Gatewayversion=10.5.0.0 <=10.5.0.21; version=10.6.0.0 <=10.6.0.9; version=10.6.1 <=10.6.6; version=11.0.0.0 <=11.0.0.1

Published CVSS scores

7.5IBMCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-770Allocation of Resources Without Limits or Throttling
T1499Endpoint Denial of Service

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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