EUVD-2026-62830
GHSA-p5gx-q84v-jggr
Severity by source
AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Adjacent vector aligns with a network-facing service not reachable from the open internet; no auth required; full RCE impact; scope unchanged as no evidence of cross-system 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 an off-by-one error in bounds checking.
AnalysisAI
Remote code execution in IBM AIX 7.2, 7.3, and IBM PowerVM VIOS 4.1 is enabled by an off-by-one wrap-around error in bounds checking, reachable from an adjacent network without authentication. An attacker positioned on the same network segment can trigger the flaw to achieve full compromise of the affected system - confidentiality, integrity, and availability are all rated High. …
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Attack ChainAIDerived
Hypothetical attack flow derived from CVE metadata
Vulnerability AssessmentAI
| Exploitation | Exploitation requires network adjacency - the attacker must be on the same physical network, VLAN, or subnet as the targeted AIX or VIOS system; this is not remotely exploitable over the public internet without additional access (e.g., VPN, pivot from a compromised adjacent host). … Additional conditions and limiting factors are described in the full assessment. |
| Risk Assessment | The CVSS 3.1 score of 8.8 (High) reflects a realistic threat posture: the attack vector is Adjacent (AV:A), meaning exploitation is constrained to attackers on the same physical or logical network segment, VLAN, or subnet - not the open internet. … 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 | Consult the IBM support advisory at https://www.ibm.com/support/pages/node/7283858 for available interim fixes (IFIXes) or technology level updates for IBM AIX 7.2, 7.3, and PowerVM VIOS 4.1 - exact patched version identifiers are not independently confirmed from the available input data and should be verified directly from the advisory. … 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 and map their network adjacency; isolate or air-gap affected systems where operationally feasible to prevent adjacent-network access. …
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OS command injection in IBM AIX 7.2/7.3 and PowerVM VIOS 4.1 lets a remote authenticated attacker run arbitrary commands
Same weakness CWE-128 – Wrap-around Error
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External POC / Exploit Code
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