EUVD-2026-63749
GHSA-2g92-8g7x-p479
Severity by source
AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Vendor describes unauthenticated remote code execution via buffer overflow with no interaction, giving AV:N/PR:N/UI:N and total C/I/A; AC:L is IBM-supplied and unverifiable from the sparse description.
Primary rating from NVD.
CVSS VectorNVD
Lifecycle Timeline
6DescriptionNVD
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 buffer overflow.
AnalysisAI
Remote code execution in IBM AIX 7.2/7.3 and PowerVM VIOS 4.1 stems from a buffer overflow (out-of-bounds write) that a remote attacker can trigger to run arbitrary code with high confidentiality, integrity, and availability impact. The CVSS 3.1 vector (AV:N/AC:L/PR:N/UI:N) describes network-reachable, unauthenticated exploitation, and IBM PSIRT has published a support advisory. …
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Attack ChainAIDerived
Hypothetical attack flow derived from CVE metadata
Vulnerability AssessmentAI
| Exploitation | The provided description gives no specific configuration prerequisite - it states only that a remote attacker could execute arbitrary code via a buffer overflow, and the CVSS vector is AV:N/AC:L/PR:N/UI:N, indicating no authentication and no user interaction against affected installations of IBM AIX 7.2/7.3 and PowerVM VIOS 4.1. … Additional conditions and limiting factors are described in the full assessment. |
| Risk Assessment | The signals are mixed. … 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 as described in the vendor advisory at https://www.ibm.com/support/pages/node/7283858 (patch available per vendor advisory; an exact fixed version/technology level is not included in the provided data, so obtain the correct interim fix or APAR/service pack for your AIX 7.2, AIX 7.3, or VIOS 4.1 level directly from that page). … Detailed patch versions, workarounds, and compensating controls in full report. |
Recommended ActionAI
Within 24 hours, inventory all IBM AIX 7.2/7.3 and PowerVM VIOS 4.1 systems to identify exposure scope and prioritize those with external network connectivity. …
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Same weakness CWE-787 – Out-of-bounds Write
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External POC / Exploit Code
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