CVE-2026-16871: CWE-787 Out-of-bounds Write
CVE-2026-16871 is a medium severity vulnerability in IBM i versions 7.3, 7.4, 7.5, and 7.6. It involves a heap buffer overflow that could allow a remote authenticated attacker to obtain sensitive information. The vulnerability does not impact integrity or availability and requires low attack complexity with no user interaction. No official patch or remediation guidance is currently provided by the vendor.
AI Analysis
Technical Summary
IBM i versions 7.3 through 7.6 contain a heap buffer overflow vulnerability (CWE-787) that may be exploited by a remote authenticated attacker to disclose sensitive information. The vulnerability has a CVSS 3.1 base score of 4.3, reflecting low impact on confidentiality and no impact on integrity or availability. The vulnerability requires network access and privileges but no user interaction. No known exploits are reported in the wild, and no vendor remediation or patch information is currently available.
Potential Impact
An attacker with valid authentication could exploit the heap buffer overflow to obtain sensitive information from the affected IBM i systems. There is no impact on system integrity or availability. The overall impact is limited to confidentiality.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until an official fix is released, monitor IBM security advisories for updates. No specific mitigations are provided at this time.
CVE-2026-16871: CWE-787 Out-of-bounds Write
Description
CVE-2026-16871 is a medium severity vulnerability in IBM i versions 7.3, 7.4, 7.5, and 7.6. It involves a heap buffer overflow that could allow a remote authenticated attacker to obtain sensitive information. The vulnerability does not impact integrity or availability and requires low attack complexity with no user interaction. No official patch or remediation guidance is currently provided by the vendor.
CVSS v3.1
Score 4.3medium
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 heap buffer overflow vulnerability (CWE-787) that may be exploited by a remote authenticated attacker to disclose sensitive information. The vulnerability has a CVSS 3.1 base score of 4.3, reflecting low impact on confidentiality and no impact on integrity or availability. The vulnerability requires network access and privileges but no user interaction. No known exploits are reported in the wild, and no vendor remediation or patch information is currently available.
Potential Impact
An attacker with valid authentication could exploit the heap buffer overflow to obtain sensitive information from the affected IBM i systems. There is no impact on system integrity or availability. The overall impact is limited to confidentiality.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until an official fix is released, monitor IBM security advisories for updates. No specific mitigations are provided at this time.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- ibm
- Date Reserved
- 2026-07-24T04:26:21.195Z
- Cvss Version
- 3.1
- State
- PUBLISHED
Threat ID: 6a7e2501bf8831d539bec080
Added to database: 08/13/2026, 20:11:45 UTC
Last enriched: 08/21/2026, 13:29:27 UTC
Last updated: 09/26/2026, 13:47:43 UTC
Views: 65
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