EUVD-2026-62426
GHSA-wqph-4x75-jq3m
Severity by source
AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H
Network-reachable NIM needs only low-privilege auth (PR:L) and no user interaction; unsanitized command execution runs at root-level NIM privilege, breaking out of the component (S:C) with full C/I/A loss.
Primary rating from Vendor (ibm).
CVSS VectorVendor: ibm
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H
Lifecycle Timeline
2DescriptionCVE.org
IBM AIX 7.2, and 7.3 and IBM PowerVM VIOS 4.1 NIM could allow a remote authenticated attacker to execute arbitrary commands due to improper neutralization of special elements used in an OS command.
AnalysisAI
OS command injection in IBM AIX 7.2/7.3 and PowerVM VIOS 4.1 lets a remote authenticated attacker run arbitrary commands through the Network Installation Manager (NIM) component. Because NIM typically operates with high (often root-level) privilege and the CVSS scope is Changed, successful exploitation can compromise the underlying operating system with full confidentiality, integrity, and availability impact. …
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Attack ChainAIDerived
Hypothetical attack flow derived from CVE metadata
Vulnerability AssessmentAI
| Exploitation | Exploitation requires the IBM Network Installation Manager (NIM) component to be in use and network-reachable by the attacker, plus valid low-privilege authenticated access to it (CVSS PR:L) - it is not anonymous/unauthenticated. … Additional conditions and limiting factors are described in the full assessment. |
| Risk Assessment | The signals are largely consistent and point to genuine high priority: the CVSS 3.1 vector (AV:N/AC:L/PR:L/UI:N/S:C, C:H/I:H/A:H, base 9.9) describes network-reachable exploitation, low complexity, only low privileges required, no user interaction, and a scope change yielding total impact - a near-worst-case profile for a management-plane component. … Full risk analysis with EPSS, KEV, and SSVC signal comparison available after sign-in. |
| Exploit Scenario | An attacker who holds a low-privilege but valid account able to reach the NIM service over the network sends a crafted request whose parameters contain shell metacharacters. NIM builds and executes an OS command without neutralizing that input, running the injected commands at NIM's privilege level; with the Changed scope this yields code execution on the underlying AIX/VIOS host. … |
| Remediation | Patch available per vendor advisory: apply the fixes referenced in IBM's advisory at https://www.ibm.com/support/pages/node/7283858 for the affected AIX 7.2/7.3 and PowerVM VIOS 4.1 filesets (the input does not include an exact fix version/APAR, so pull the precise fileset level from that advisory). … Detailed patch versions, workarounds, and compensating controls in full report. |
Recommended ActionAI
Within 24 hours: Identify all IBM AIX 7.2/7.3 and PowerVM VIOS 4.1 systems in your environment; restrict Network Installation Manager (NIM) component access to trusted administrative networks only. …
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Same weakness CWE-78 – OS Command Injection
View allSame technique Command Injection
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External POC / Exploit Code
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