EUVD-2026-62514
GHSA-cqrp-mxgc-jj3v
Severity by source
AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Improper authentication bypass yielding root over the network with no privileges or interaction justifies AV:N/AC:L/PR:N/UI:N and full C:H/I:H/A:H; scope unchanged.
Primary rating from Vendor (ibm).
CVSS VectorVendor: ibm
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Lifecycle Timeline
2DescriptionCVE.org
IBM AIX 7.2, and 7.3 and IBM PowerVM VIOS 4.1 could allow a remote attacker to gain root privileges due to improper authentication.
AnalysisAI
Remote privilege escalation to root in IBM AIX 7.2 and 7.3 and IBM PowerVM VIOS 4.1 stems from an improper authentication weakness (CWE-287) that lets an unauthenticated network attacker bypass identity checks and obtain root-level control. The CVSS 9.8 rating reflects a network-reachable, low-complexity flaw requiring no privileges or user interaction, with full confidentiality, integrity, and availability impact. …
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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 special conditions beyond network access are indicated - remote unauthenticated exploitation is possible against affected IBM AIX 7.2/7.3 and PowerVM VIOS 4.1 systems, with no privileges and no user interaction required. … Additional conditions and limiting factors are described in the full assessment. |
| Risk Assessment | The signals align toward genuine priority rather than inflated severity: the CVSS 3.1 vector (AV:N/AC:L/PR:N/UI:N) describes remote, low-complexity, unauthenticated exploitation, and the impact set (C:H/I:H/A:H) reflects full root compromise, which is consistent with an authentication-bypass root-privilege flaw. … Full risk analysis with EPSS, KEV, and SSVC signal comparison available after sign-in. |
| Exploit Scenario | An attacker with network reachability to an exposed AIX or PowerVM VIOS service sends crafted requests that exploit the improper authentication check, causing the system to treat the attacker as an authenticated root principal without supplying valid credentials. Having gained root, the attacker executes arbitrary commands, exfiltrates or alters data, and - on VIOS - can pivot toward the virtual I/O layer serving guest partitions. … |
| Remediation | Patch available per vendor advisory: apply the fix published by IBM at https://www.ibm.com/support/pages/node/7283858 for the affected AIX 7.2/7.3 and PowerVM VIOS 4.1 systems, confirming the exact fixed technology level or ifix from that page since no precise fixed-version string was supplied in the input. … Detailed patch versions, workarounds, and compensating controls in full report. |
Recommended ActionAI
Within 24 hours: execute complete asset inventory of all IBM AIX 7.2, 7.3, and PowerVM VIOS 4.1 systems and assess network exposure to untrusted networks; contact IBM support to confirm patch availability and applicable versions for your infrastructure. …
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Same weakness CWE-287 – Improper Authentication
View allSame technique Authentication Bypass
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External POC / Exploit Code
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