CVE-2026-16692

IBM i is Affected By Multiple Vulnerabilities in Simple Mail Transfer Protocol

Assigner: ibm
Reserved: 23.07.2026 Published: 13.08.2026 Updated: 13.08.2026

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.

Metrics

CVSS Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
CVSS Score: 6.5

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

CVSS 3.1

Product Status

Vendor	IBM
Product	i
Versions	Version 7.6 is affected Version 7.5 is affected Version 7.4 is affected Version 7.3 is affected

Vendor

IBM

Product

Versions

Version 7.6 is affected
Version 7.5 is affected
Version 7.4 is affected
Version 7.3 is affected

Solutions

IBM strongly recommends addressing the vulnerability now.

IBM i Release5770-TC1 PTF Number(s)PTF Download Link(s)7.6SJ11061 SJ11131 https://www.ibm.com/mysupport/s/fix-information?legacy=SJ11061 https://www.ibm.com/mysupport/s/fix-information?legacy=SJ11131 7.5SJ11074 SJ11129 https://www.ibm.com/mysupport/s/fix-information?legacy=SJ11074 https://www.ibm.com/mysupport/s/fix-information?legacy=SJ11129 7.4SJ11083 SJ11127 https://www.ibm.com/mysupport/s/fix-information?legacy=SJ11083 https://www.ibm.com/mysupport/s/fix-information?legacy=SJ11127 7.3SJ11084 SJ11123 https://www.ibm.com/mysupport/s/fix-information?legacy=SJ11084 https://www.ibm.com/mysupport/s/fix-information?legacy=SJ11123 https://www.ibm.com/mysupport/s/fix-information

IBM recommends users running unsupported versions of affected products upgrade to a supported and fixed version of affected products.

References

Problem Types