CVE-2025-36122Network attack vector

Authenticated service interruption via automatic statement-heap exhaustion

Published Apr 30, 2026 · Updated Apr 30, 2026

Resource exhaustion in IBM Db2 11.5.0 through 11.5.9 and 12.1.0 through 12.1.3 allows remote authenticated users to interrupt service. When STMHEAP is AUTOMATIC, greedy join enumeration can allocate statement-heap memory beyond the parameter's underlying per-compilation limit. Remote authenticated users must reach the Db2 service; IBM has not disclosed the query structure or whether exhaustion causes a hang or crash.

CVSS severity6.5
Medium
EPSS probability0.24%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Resource exhaustion in IBM Db2 11.5.0 through 11.5.9 and 12.1.0 through 12.1.3 allows remote authenticated users to interrupt service. When STMHEAP is AUTOMATIC, greedy join enumeration can allocate statement-heap memory beyond the parameter's underlying per-compilation limit. Remote authenticated users must reach the Db2 service; IBM has not disclosed the query structure or whether exhaustion causes a hang or crash.

The record

CVE
CVE-2025-36122
Published
Apr 30, 2026
Updated
Apr 30, 2026
Vendor
OpenBMC Project
Product
Db2
Classifications
CWE-770, T1499.003
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Apr 30, 2026CVE publishedPublication date reported by the CVE source.
  2. Apr 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=11.5.0 <=11.5.9
  2. Affected versionversion=12.1.0 <=12.1.3

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

OpenBMC Project · Db2version=11.5.0 <=11.5.9; version=12.1.0 <=12.1.3

Published CVSS scores

6.5IBMCVSS:3.1/AV:N/AC:L/PR:L/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.

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No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-770Allocation of Resources Without Limits or Throttling
T1499.003Application Exhaustion Flood

Public exploit references

No public exploit references are available in this record.

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Technologies

Your stack

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Your stack

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