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TI-2026-14883 Aliases CVE-2026-18077GHSA-x7cj-5r2f-7fw3

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

Priority MEDIUM 40CWE-787Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
None
Attack complexity
Low
Impact type
Denial of service
Confidentiality · integrity · availability
None · None · High
Fix status
No fix listed

Attack profile from CVSS 3.1 · CNA. Fix status from CNA. Impact type from CWE-787 and the CVSS impact.

Summary

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

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00546 46th percentileScored 2026-11-07
Fix No fix listed No fixed version in the sources yet

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
None
Automatable
Yes
Technical impact
Partial

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
IBMi7.6; 7.5; 7.4; 7.3—No fix listedCNA
  • i VendorIBM Affected 7.6; 7.5; 7.4; 7.3 Fixed in — No fix listed CNA

CPE configurations NVD · 4

CPEVersionsRoleVendor
cpe:2.3:o:ibm:i:7.3:*:*:*:*:*:*:*7.3VulnerableIBM
cpe:2.3:o:ibm:i:7.4:*:*:*:*:*:*:*7.4VulnerableIBM
cpe:2.3:o:ibm:i:7.5:*:*:*:*:*:*:*7.5VulnerableIBM
cpe:2.3:o:ibm:i:7.6:*:*:*:*:*:*:*7.6VulnerableIBM
  • cpe:2.3:o:ibm:i:7.3:*:*:*:*:*:*:* Versions 7.3 Vulnerable ·IBM
  • cpe:2.3:o:ibm:i:7.4:*:*:*:*:*:*:* Versions 7.4 Vulnerable ·IBM
  • cpe:2.3:o:ibm:i:7.5:*:*:*:*:*:*:* Versions 7.5 Vulnerable ·IBM
  • cpe:2.3:o:ibm:i:7.6:*:*:*:*:*:*:* Versions 7.6 Vulnerable ·IBM

Remediation

No fixed version listed by the sources yet.

Fixed in the same release

Records fixed by the same vendor advisory or release, as the CNA lists them.

  • Advisory ·

    IBM i — ibm.com/support/pages/node/7283291

    3 records Highest priority Priority MEDIUM 2 MEDIUM, 1 LOW

    Other records, highest priority first

    • TI-2026-13994 IBM i is Affected By Multiple Vulnerabilities in Simple Mail Transfer ProtocolPriority MEDIUM 46
    • TI-2026-13915 IBM i is Affected By Multiple Vulnerabilities in Simple Mail Transfer ProtocolPriority LOW 29
    Show all 3 records → Advisory →

Timeline

  1. 2026-10-02 Threatist record created from CVE-2026-18077
  2. 2026-10-03 Alias added: GHSA-x7cj-5r2f-7fw3

References

Patch 1

  • TI-2024-18115 IBM i privilege escalation CVSS 3.1HIGH 7.8
  • TI-2026-14283 IBM i is Affected By Remote Code Execution Vulnerability in Line Printer Daemon [] CVSS 3.1CRITICAL 9.8
  • TI-2023-14729 IBM i command execution CVSS 3.1CRITICAL 9.8
  • TI-2026-14279 IBM i is Affected By Denial of Service Vulnerabilities in NFS [, ] CVSS 3.1CRITICAL 9.1
  • TI-2026-14196 IBM i is Affected By Denial of Service Vulnerabilities in NFS [, ] CVSS 3.1CRITICAL 9.1
  • TI-2026-13994 IBM i is Affected By Multiple Vulnerabilities in Simple Mail Transfer Protocol CVSS 3.1CRITICAL 9.1
See all 207 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences