EUVD-2026-62826
GHSA-mfcf-ph4g-vj2m
Severity by source
AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Description states remote attacker and stack overflow enabling code execution with no stated auth or interaction, so AV:N/AC:L/PR:N/UI:N with 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 PowerVM VIOS 4.1 stems from a stack-based buffer overflow that a network-based attacker can trigger without authentication or user interaction, per the CVSS 9.8 vector. Successful exploitation yields full compromise (high confidentiality, integrity, and availability impact) of Unix systems that frequently underpin enterprise and mission-critical workloads. …
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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 authentication and no user interaction are required, and attack complexity is low - remote unauthenticated exploitation is possible against affected IBM AIX 7.2/7.3 and PowerVM VIOS 4.1 hosts. … Additional conditions and limiting factors are described in the full assessment. |
| Risk Assessment | This rates as a genuine high priority rather than an inflated high-CVSS score: the CVSS 3.1 vector (AV:N/AC:L/PR:N/UI:N) describes unauthenticated, low-complexity, network-reachable exploitation with full C/I/A impact, which is the worst-case profile for a server OS. … 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 fixes referenced in IBM's advisory at https://www.ibm.com/support/pages/node/7283858 - IBM typically distributes AIX and VIOS corrections as APARs and interim fixes (ifixes) mapped to specific technology levels and service packs; no single fixed version string was provided in this intelligence, so consult that advisory for the exact ifix/APAR per your TL/SP and install it (Patch available per vendor advisory). … Detailed patch versions, workarounds, and compensating controls in full report. |
Recommended ActionAI
Within 24 hours, identify and inventory all IBM AIX 7.2, 7.3, and PowerVM VIOS 4.1 systems in production and implement emergency network restrictions limiting unauthenticated access to affected platforms. …
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Same weakness CWE-787 – Out-of-bounds Write
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External POC / Exploit Code
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