CVE-2026-17218: CWE-787 Out-of-bounds Write
IBM i 7.6, 7.5, 7.4, and 7.3 could allow a remote attacker to execute arbitrary code due to an out-of-bounds write.
AI Analysis
Technical Summary
IBM i versions 7.3 through 7.6 contain a critical out-of-bounds write vulnerability (CWE-787) that could be exploited remotely to execute arbitrary code. The vulnerability is identified as CVE-2026-17218 and has a CVSS 3.1 base score of 9.8, reflecting its critical severity. The vulnerability allows an attacker with no privileges and no user interaction to compromise the system. As of the published date, no official fix or patch has been announced by IBM, and no known exploits have been reported in the wild.
Potential Impact
Successful exploitation of this vulnerability could lead to full system compromise, including unauthorized code execution with potentially complete control over the affected IBM i system. The impact affects confidentiality, integrity, and availability at the highest levels as indicated by the CVSS score.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until an official fix is released, monitor IBM's security advisories for updates. No specific mitigations or workarounds have been provided by the vendor at this time.
CVE-2026-17218: CWE-787 Out-of-bounds Write
Description
IBM i 7.6, 7.5, 7.4, and 7.3 could allow a remote attacker to execute arbitrary code due to an out-of-bounds write.
CVSS v3.1
Score 9.8critical
Affected software
IBM
cpe:2.3:a:ibm:i:7.6:*:*:*:*:*:*:*cpe:2.3:a:ibm:i:7.6.0:*:*:*:*:*:*:*cpe:2.3:a:ibm:i:7.5:*:*:*:*:*:*:*cpe:2.3:a:ibm:i:7.5.0:*:*:*:*:*:*:*cpe:2.3:a:ibm:i:7.4:*:*:*:*:*:*:*cpe:2.3:a:ibm:i:7.4.0:*:*:*:*:*:*:*Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
IBM i versions 7.3 through 7.6 contain a critical out-of-bounds write vulnerability (CWE-787) that could be exploited remotely to execute arbitrary code. The vulnerability is identified as CVE-2026-17218 and has a CVSS 3.1 base score of 9.8, reflecting its critical severity. The vulnerability allows an attacker with no privileges and no user interaction to compromise the system. As of the published date, no official fix or patch has been announced by IBM, and no known exploits have been reported in the wild.
Potential Impact
Successful exploitation of this vulnerability could lead to full system compromise, including unauthorized code execution with potentially complete control over the affected IBM i system. The impact affects confidentiality, integrity, and availability at the highest levels as indicated by the CVSS score.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until an official fix is released, monitor IBM's security advisories for updates. No specific mitigations or workarounds have been provided by the vendor at this time.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- ibm
- Date Reserved
- 2026-07-24T20:07:39.903Z
- Cvss Version
- 3.1
- State
- PUBLISHED
Threat ID: 6a7cb3e7bf8831d539ed559a
Added to database: 08/12/2026, 17:56:55 UTC
Last enriched: 08/12/2026, 18:11:57 UTC
Last updated: 09/25/2026, 13:47:43 UTC
Views: 56
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