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IBM Db2 EUVDEUVD-2026-77784

| CVE-2026-17463 MEDIUM
Uncontrolled Resource Consumption (CWE-400)
2026-09-14 ibm GHSA-g9xv-h3jc-5g3h
Denial Of Service IBM Db2
6.5
CVSS 3.1 · Vendor: ibm
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Severity by source

Vendor (ibm) PRIMARY
6.5 MEDIUM
AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
vuln.today AI
6.5 MEDIUM

Network reachable with low complexity, but requires a valid Db2 account (PR:L), and the impact is availability-only with no confidentiality or integrity loss.

3.1 AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
4.0 AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N

Primary rating from Vendor (ibm).

CVSS VectorVendor: ibm

Attack Vector
Network
Attack Complexity
Low
Privileges Required
Low
User Interaction
None
Scope
Unchanged
Confidentiality
None
Integrity
None
Availability
High

Lifecycle Timeline

3
Metadata Corrected
Sep 15, 2026 - 11:40 vuln.today
tag: Microsoft removed
Analysis Generated
Sep 15, 2026 - 11:34 vuln.today
CVE Published
Sep 14, 2026 - 19:40 cve.org
MEDIUM 6.5

DescriptionCVE.org

IBM Db2 11.5.0 through 11.5.9, and 12.1.0 through 12.1.5 for Linux, UNIX and Windows (includes DB2 Connect Server) could allow a remote authenticated attacker to cause a denial of service due to uncontrolled resource consumption.

AnalysisAI

IBM Db2 11.5.0 through 11.5.9 and 12.1.0 through 12.1.5 on Linux, UNIX and Windows (including Db2 Connect Server) can be driven into a denial-of-service condition by a remote attacker who holds valid database credentials, through uncontrolled consumption of server resources. The flaw is rated CVSS 6.5 (AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H), so the impact is loss of availability only - no confidentiality or integrity exposure is claimed. …

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Attack ChainAIDerived

Hypothetical attack flow derived from CVE metadata

Access
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Delivery
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Exploit
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Execution
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Vulnerability AssessmentAI

Exploitation The attacker must have valid Db2 authentication credentials - the CVSS vector specifies PR:L, so a normal low-privileged database account is sufficient and no administrative rights are needed. … Additional conditions and limiting factors are described in the full assessment.
Risk Assessment CVSS places this at 6.5 with a network attack vector and low attack complexity, but privileges are required (PR:L), so the attacker must already hold a valid Db2 account - this substantially narrows the population of viable attackers and is why the score sits in the medium band despite network reachability. … Full risk analysis with EPSS, KEV, and SSVC signal comparison available after sign-in.
Exploit Scenario Full exploit scenario with step-by-step reproduction available after sign-in.
Remediation Vendor-released patch: IBM has published fixes via the security bulletin at https://www.ibm.com/support/pages/node/7286983 - apply the current Db2 11.5.x or 12.1.x fix pack that this bulletin designates as containing the correction (the advisory, not the CVSS text, is the authoritative source for the exact build). … Detailed patch versions, workarounds, and compensating controls in full report.
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EUVD-2026-77784 vulnerability details – vuln.today
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