CVE-2026-16692: IBM i is Affected By Multiple Vulnerabilities in Simple Mail Transfer Protocol

Q: What is the severity of CVE-2026-16692?

The severity of CVE-2026-16692 is medium with a score of 6.5.

Q: What type of vulnerability is described in CVE-2026-16692?

CVE-2026-16692 describes a stack-based buffer overflow vulnerability.

Q: How can CVE-2026-16692 be exploited?

CVE-2026-16692 can be exploited by a remote authenticated attacker to cause a denial of service.

Q: Which versions of IBM i are affected by CVE-2026-16692?

CVE-2026-16692 affects IBM i versions 7.6, 7.5, 7.4, and 7.3.

Q: What is the impact of CVE-2026-16692 on the affected systems?

The impact of CVE-2026-16692 is a denial of service that can affect the availability of the system.

Published Aug 12, 2026

Updated

IBM i 7.6, 7.5, 7.4, and 7.3 could allow a remote authenticated attacker to cause a denial of service due to a stack-based buffer overflow.

Other sources

IBM i could allow a remote authenticated attacker to cause a denial of service due to a stack-based buffer overflow.

— IBM

Affected Software

9 affected components

IBM IBM i>=7.3<=7.6

IBM i<=7.6

IBM i<=7.5

IBM i<=7.4

IBM i<=7.3

IBM i=7.3

IBM i=7.4

IBM i=7.5

IBM i=7.6

Remediation

Recommended actions to resolve this vulnerability, in priority order.

Upgrade
Upgrade IBM i to a version that resolves this vulnerability.
Fixed in 7.6Patch SJ11061
Upgrade
Upgrade IBM i to a version that resolves this vulnerability.
Fixed in 7.6Patch SJ11123
Upgrade
Upgrade IBM i to a version that resolves this vulnerability.
Fixed in 7.6Patch SJ11127
Upgrade
Upgrade IBM i to a version that resolves this vulnerability.
Fixed in 7.6Patch SJ11129
Upgrade
Upgrade IBM i to a version that resolves this vulnerability.
Fixed in 7.6Patch SJ11131
Upgrade
Upgrade IBM i to a version that resolves this vulnerability.
Fixed in 7.5Patch SJ11074
Upgrade
Upgrade IBM i to a version that resolves this vulnerability.
Fixed in 7.5Patch SJ11131
Upgrade
Upgrade IBM i to a version that resolves this vulnerability.
Fixed in 7.4Patch SJ11083
Upgrade
Upgrade IBM i to a version that resolves this vulnerability.
Fixed in 7.3Patch SJ11084
Upgrade
Upgrade IBM i to a version that resolves this vulnerability.
Fixed in 7.3Patch SJ11129
Upgrade
Upgrade IBM i to a version that resolves this vulnerability.
Fixed in 7.4Patch SJ11123

Event History

Aug 12, 2026

CVE Published

via IBM·12:00 AM

Data Sourced

via IBM·12:00 AM

DescriptionAffected Software

Aug 13, 2026

CVE Published

via MITRE·07:39 PM

Data Sourced

via MITRE·07:39 PM

RemedyDescriptionSeverityWeakness

Data Sourced

via NVD·08:17 PM

DescriptionSeverityWeaknessAffected Software

Parent advisories

This vulnerability appears in the following advisories.

IBM-7283291

Frequently Asked Questions

What is the severity of CVE-2026-16692?

The severity of CVE-2026-16692 is medium with a score of 6.5.

What type of vulnerability is described in CVE-2026-16692?

CVE-2026-16692 describes a stack-based buffer overflow vulnerability.

How can CVE-2026-16692 be exploited?

CVE-2026-16692 can be exploited by a remote authenticated attacker to cause a denial of service.

Which versions of IBM i are affected by CVE-2026-16692?

CVE-2026-16692 affects IBM i versions 7.6, 7.5, 7.4, and 7.3.

What is the impact of CVE-2026-16692 on the affected systems?

The impact of CVE-2026-16692 is a denial of service that can affect the availability of the system.

CVE-2026-16692: IBM i is Affected By Multiple Vulnerabilities in Simple Mail Transfer Protocol

Other sources

Affected Software

Remediation

Event History

Parent advisories

Frequently Asked Questions

What is the severity of CVE-2026-16692?

What type of vulnerability is described in CVE-2026-16692?

How can CVE-2026-16692 be exploited?

Which versions of IBM i are affected by CVE-2026-16692?

What is the impact of CVE-2026-16692 on the affected systems?

Company

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