CVE-2026-17223: CWE-787 Out-of-bounds Write
CVE-2026-17223 is a high-severity vulnerability in IBM i versions 7.3, 7.4, 7.5, and 7.6 that allows a remote authenticated attacker to execute arbitrary code due to a buffer overflow (CWE-787). The vulnerability has a CVSS score of 8.8, indicating significant impact on confidentiality, integrity, and availability. No official patch or remediation information is currently available.
AI Analysis
Technical Summary
This vulnerability in IBM i 7.3 through 7.6 involves an out-of-bounds write (buffer overflow) that could be exploited by a remote attacker with authentication to execute arbitrary code. The CVSS vector indicates network attack vector, low attack complexity, required privileges, no user interaction, and high impact on confidentiality, integrity, and availability. The vulnerability is publicly known but no vendor advisory or patch details have been provided yet.
Potential Impact
Successful exploitation could allow an authenticated remote attacker to execute arbitrary code on affected IBM i systems, potentially leading to full system compromise including unauthorized data access, modification, or denial of service.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until an official fix is released, restrict remote access to IBM i systems and monitor for suspicious activity involving authenticated sessions.
CVE-2026-17223: CWE-787 Out-of-bounds Write
Description
CVE-2026-17223 is a high-severity vulnerability in IBM i versions 7.3, 7.4, 7.5, and 7.6 that allows a remote authenticated attacker to execute arbitrary code due to a buffer overflow (CWE-787). The vulnerability has a CVSS score of 8.8, indicating significant impact on confidentiality, integrity, and availability. No official patch or remediation information is currently available.
CVSS v3.1
Score 8.8high
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
This vulnerability in IBM i 7.3 through 7.6 involves an out-of-bounds write (buffer overflow) that could be exploited by a remote attacker with authentication to execute arbitrary code. The CVSS vector indicates network attack vector, low attack complexity, required privileges, no user interaction, and high impact on confidentiality, integrity, and availability. The vulnerability is publicly known but no vendor advisory or patch details have been provided yet.
Potential Impact
Successful exploitation could allow an authenticated remote attacker to execute arbitrary code on affected IBM i systems, potentially leading to full system compromise including unauthorized data access, modification, or denial of service.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until an official fix is released, restrict remote access to IBM i systems and monitor for suspicious activity involving authenticated sessions.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- ibm
- Date Reserved
- 2026-07-24T20:20:03.940Z
- Cvss Version
- 3.1
- State
- PUBLISHED
Threat ID: 6a7e1a7dbf8831d539b18077
Added to database: 08/13/2026, 19:26:53 UTC
Last enriched: 08/21/2026, 14:07:01 UTC
Last updated: 09/26/2026, 01:47:40 UTC
Views: 21
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