CVE-2026-16702Network attack vector

Authenticated service crash via null pointer dereference

Published Sep 14, 2026 · Updated Sep 14, 2026

Null pointer dereference in IBM Db2 federated server allows remote authenticated users to crash the database service. IBM has not disclosed the affected function, input, or operation that dereferences the null pointer. Exploitation requires an authenticated network connection and interrupts availability; IBM reports no confidentiality or integrity impact.

CVSS severity6.5
Medium
EPSS probability0.34%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Null pointer dereference in IBM Db2 federated server allows remote authenticated users to crash the database service. IBM has not disclosed the affected function, input, or operation that dereferences the null pointer. Exploitation requires an authenticated network connection and interrupts availability; IBM reports no confidentiality or integrity impact.

The record

CVE
CVE-2026-16702
Published
Sep 14, 2026
Updated
Sep 14, 2026
Vendor
IBM
Product
Db2
Classifications
CWE-476, T1499.004
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Sep 14, 2026CVE publishedPublication date reported by the CVE source.
  2. Sep 14, 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 <=12.1.5

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

IBM · Db2version=11.5.0 <=11.5.9; version=12.1.0 <=12.1.5

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.

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-476NULL Pointer Dereference
T1499.004Application or System Exploitation

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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