CVE-2025-36122 | IBM® Db2® is vulnerable to a denial of service with a specially crafted query when stmtheap is set to automatic

IBM Db2 11.5.0 through 11.5.9, and 12.1.0 through 12.1.3 for Linux, UNIX and Windows (includes DB2 Connect Server) could allow an authenticated user to cause a denial of service using a specially crafted SQL query due to improper allocation of system resources.

Published: 2026-04-30 Last update: 2026-05-01 Assigner: [email protected] Source: [email protected]
NVD Status：Analyzed，CVE State: published
View at NVD, CVE.org, EUVD

CVE-2025-36122 is rated Low Risk (32/100): CVSS Medium severity, with low exploitation likelihood (EPSS 0.05%). Monitor for updates and reassess as exploit intelligence or EPSS changes.

Risk is dynamic; we continuously reassess and refresh what is shown on this page as upstream context changes.

Exploit prediction scoring system (EPSS) score for CVE-2025-36122

EPSS lead: Daily EPSS estimates relative likelihood of exploitation; percentile ranks this CVE among scored vulnerabilities (higher = more severe relative rank).

# Date Old EPSS score New EPSS score Delta (New - Old)
1 2026-06-01 0.04% 0.05% +0.02%
2 2026-05-01 — 0.04% —

Full EPSS history (2 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2025-36122

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
6.5 3.1 MEDIUM
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H Click to expand
Attack vector (AV:N)
Could be attacked over the internet or any normal routed network—not just someone sitting at the machine.
Attack complexity (AC:L)
Once they can reach the bug, pulling it off is straightforward—no weird race conditions or rare setup.
Privileges required (PR:L)
A normal user session is enough; they don’t have to be admin.
User interaction (UI:N)
Nobody has to click “OK” or open a trap file; it can work without a victim helping.
Scope (S:U)
Damage stays in the same “trust bubble” as the broken component—no big spill into unrelated systems.
Confidentiality (C:N)
Doesn’t really leak secrets in a meaningful way.
Integrity (I:N)
Data isn’t meaningfully altered or forged.
Availability (A:H)
Could take the service down hard or make it unusable for people who depend on it.
 2.8 3.6 [email protected]

Weakness enumeration for CVE-2025-36122

GitHub Security Advisory for CVE-2025-36122

GHSA-36qp-rc95-9xrj · Severity: medium — IBM Db2 11.5.0 through 11.5.9, and 12.1.0 through 12.1.3 for Linux, UNIX and Windows (includes...

Affected software / configurations for CVE-2025-36122

Vendor Product Version Raw CPE
ibm db2 >= 11.5.0, <= 11.5.9 cpe:2.3:a:ibm:db2:*:*:*:*:*:linux:*:*
ibm db2 >= 11.5.0, <= 11.5.9 cpe:2.3:a:ibm:db2:*:*:*:*:*:unix:*:*
ibm db2 >= 11.5.0, <= 11.5.9 cpe:2.3:a:ibm:db2:*:*:*:*:*:windows:*:*
ibm db2 >= 12.1.0, <= 12.1.3 cpe:2.3:a:ibm:db2:*:*:*:*:*:linux:*:*
ibm db2 >= 12.1.0, <= 12.1.3 cpe:2.3:a:ibm:db2:*:*:*:*:*:unix:*:*
ibm db2 >= 12.1.0, <= 12.1.3 cpe:2.3:a:ibm:db2:*:*:*:*:*:windows:*:*

References for CVE-2025-36122

cvelogic Threat Intelligence