EUVD-2026-63633
GHSA-hv56-c358-xgh8
Severity by source
AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
PR:L replaces the provided PR:N because local privilege escalation typically requires an existing local account; AV:L, AC:L, UI:R, and full C/I/A impact are retained per the description and CWE-269 root cause.
Primary rating from Vendor (ibm).
CVSS VectorVendor: ibm
Lifecycle Timeline
2DescriptionCVE.org
IBM AIX 7.2, and 7.3 and IBM PowerVM VIOS 4.1 could allow a local attacker to execute arbitrary commands due to improper privilege management.
AnalysisAI
Arbitrary command execution on IBM AIX 7.2, 7.3, and IBM PowerVM VIOS 4.1 is achievable by a local attacker through improper privilege management (CWE-269), yielding full confidentiality, integrity, and availability compromise of the affected system. The vulnerability carries a CVSS 7.8 HIGH score with a local attack vector, no prior privileges required, and a user interaction dependency. …
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Attack ChainAIDerived
Hypothetical attack flow derived from CVE metadata
Vulnerability AssessmentAI
| Exploitation | Exploitation requires local access to an affected IBM AIX 7.2, AIX 7.3, or PowerVM VIOS 4.1 host - an attacker must be able to execute code on the target system. … Additional conditions and limiting factors are described in the full assessment. |
| Risk Assessment | The CVSS 7.8 HIGH score reflects a fully high-impact triad (C:H/I:H/A:H) with low attack complexity (AC:L) and unchanged scope (S:U). … 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 | The primary remediation is to apply the vendor-released patch documented in IBM's support advisory at https://www.ibm.com/support/pages/node/7283858, which contains the specific APAR identifiers, fileset names, and Technology Level or Service Pack requirements for AIX 7.2, AIX 7.3, and PowerVM VIOS 4.1. … 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 your environment, then download the vendor-released patch from IBM's support advisory. …
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Same weakness CWE-269 – Improper Privilege Management
View allSame technique Privilege Escalation
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External POC / Exploit Code
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