EUVD-2026-63710
GHSA-7rpq-xcrw-jvfg
Severity by source
AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Description states remote attacker and arbitrary code execution with no stated auth or interaction, so AV:N/AC:L/PR:N/UI:N; RCE yields full C/I/A High.
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-based buffer overflow.
AnalysisAI
Remote code execution in IBM AIX 7.2 and 7.3, and IBM PowerVM VIOS 4.1, stems from a stack-based buffer overflow (CWE-787) that a remote attacker can trigger to run arbitrary code with no authentication or user interaction, per the CVSS:3.1 vector (AV:N/AC:L/PR:N/UI:N) scoring 9.8 Critical. IBM PSIRT is the reporting source. …
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Attack ChainAIDerived
Hypothetical attack flow derived from CVE metadata
Vulnerability AssessmentAI
| Exploitation | Exploitation requires network reachability to the specific vulnerable listening service on an affected host - IBM AIX 7.2/7.3 or PowerVM VIOS 4.1. … Additional conditions and limiting factors are described in the full assessment. |
| Risk Assessment | The signals available point to genuine high priority rather than an inflated CVSS score. … 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 documented in the vendor advisory at https://www.ibm.com/support/pages/node/7283858; consult that page for the exact APAR, interim fix (ifix), or technology-level/service-pack version applicable to your AIX 7.2, AIX 7.3, or VIOS 4.1 release, as an exact fixed version string is not present in the supplied data (No vendor-released patch version independently confirmed here - obtain it from the IBM advisory). … Detailed patch versions, workarounds, and compensating controls in full report. |
Recommended ActionAI
Within 24 hours: conduct inventory of all AIX 7.2, 7.3, and PowerVM VIOS 4.1 systems and apply firewall rules to restrict inbound network access to essential trusted sources only, blocking unnecessary external 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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