CVE-2026-16660Network attack vector

Remote service interruption via out-of-bounds read

Published Sep 4, 2026 · Updated Sep 4, 2026

Out-of-bounds read in IBM Db2 Mirror releases 7.4, 7.5, and 7.6 allows remote attackers to interrupt service via crafted input. IBM has not disclosed the affected component, input field, or bounds-checking error that causes the read to cross a buffer boundary. Network reachability without authentication is sufficient according to IBM's assessment, and the reported consequence is service interruption without confidentiality or integrity impact.

CVSS severity5.3
Medium
EPSS probability0.36%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Out-of-bounds read in IBM Db2 Mirror releases 7.4, 7.5, and 7.6 allows remote attackers to interrupt service via crafted input. IBM has not disclosed the affected component, input field, or bounds-checking error that causes the read to cross a buffer boundary. Network reachability without authentication is sufficient according to IBM's assessment, and the reported consequence is service interruption without confidentiality or integrity impact.

The record

CVE
CVE-2026-16660
Published
Sep 4, 2026
Updated
Sep 4, 2026
Vendor
IBM
Product
IBM Db2 Mirror for i
Classifications
CWE-125, CAPEC-540, T1499.004
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Sep 4, 2026CVE publishedPublication date reported by the CVE source.
  2. Sep 4, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

Compare your product and version with the public record. A matching version still requires validation against your environment.

Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=7.4
  2. Affected versionversion=7.5
  3. Affected versionversion=7.6

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

IBM · IBM Db2 Mirror for iversion=7.4; version=7.5; version=7.6

Published CVSS scores

5.3IBMCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L

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
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-125Out-of-bounds Read
CAPEC-540Overread Buffers
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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