CVE-2025-36071Network attack vector

Server crash via federated-query memory leak

Published Jul 29, 2025 · Updated Jul 29, 2025

Denial of service in IBM Db2 11.5.0 through 11.5.9 and 12.1.0 through 12.1.2 allows remote authenticated users to crash the server. During federated-query processing, Db2 fails to release memory resources under certain conditions triggered by a crafted query. A low-privilege database login and network access are required; exploitation interrupts database availability, and IBM has not disclosed the exact code path or triggering condition.

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

What happened

Denial of service in IBM Db2 11.5.0 through 11.5.9 and 12.1.0 through 12.1.2 allows remote authenticated users to crash the server. During federated-query processing, Db2 fails to release memory resources under certain conditions triggered by a crafted query. A low-privilege database login and network access are required; exploitation interrupts database availability, and IBM has not disclosed the exact code path or triggering condition.

The record

CVE
CVE-2025-36071
Published
Jul 29, 2025
Updated
Jul 29, 2025
Vendor
IBM
Product
IBM Db2
Classifications
CWE-772, T1499
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Jul 29, 2025CVE publishedPublication date reported by the CVE source.
  2. Jul 29, 2025Record 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 <=12.1.2

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

IBM · IBM Db2version=11.5.0 <=11.5.9; version=12.1.0 <=12.1.2

Published CVSS scores

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

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

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-772Missing Release of Resource after Effective Lifetime
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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