EUVD-2026-62832
GHSA-59pj-mhpc-mwm2
Severity by source
AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Description states remote arbitrary code execution via stack buffer overflow with no stated auth or interaction, so AV:N/AC:L/PR:N/UI:N and full C/I/A impact.
Primary rating from Vendor (us).
CVSS VectorVendor: us
Lifecycle Timeline
2DescriptionCVE.org
IBM AIX 7.2, and 7.3 and IBM PowerVM VIOS 4.1 could allow a remote attacker to execute arbitrary code due to a stack buffer overflow.
AnalysisAI
Remote code execution in IBM AIX 7.2/7.3 and IBM PowerVM VIOS 4.1 stems from a stack-based buffer overflow that a remote attacker can trigger without authentication, per IBM PSIRT (CVE-2026-16913). With a CVSS 3.1 base of 9.8 (AV:N/AC:L/PR:N/UI:N) and full CIA impact, successful exploitation yields arbitrary code execution on the affected UNIX operating system or virtualization I/O server. …
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Attack ChainAIDerived
Hypothetical attack flow derived from CVE metadata
Vulnerability AssessmentAI
| Exploitation | Per the CVSS vector (AV:N/AC:L/PR:N/UI:N), no special conditions - remote unauthenticated exploitation against IBM AIX 7.2/7.3 and PowerVM VIOS 4.1 with no user interaction required. … Additional conditions and limiting factors are described in the full assessment. |
| Risk Assessment | The signals are mostly aligned toward high priority but incomplete. … Full risk analysis with EPSS, KEV, and SSVC signal comparison available after sign-in. |
| Exploit Scenario | Full exploit scenario with step-by-step reproduction available after sign-in. |
| Remediation | Apply the IBM-provided fix by following the vendor advisory at https://www.ibm.com/support/pages/node/7283858, which enumerates the specific APAR/ifix or technology-level updates for AIX 7.2, AIX 7.3, and VIOS 4.1 - the input data does not include an exact fixed version string, so consult that advisory for the precise iFix/service pack rather than an invented version number (Patch available per vendor advisory). … Detailed patch versions, workarounds, and compensating controls in full report. |
Recommended ActionAI
Within 24 hours, conduct a comprehensive inventory of all systems running IBM AIX 7.2, 7.3, or PowerVM VIOS 4.1, prioritizing production and critical infrastructure. …
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Same weakness CWE-787 – Out-of-bounds Write
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External POC / Exploit Code
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