EUVD-2026-63737
GHSA-wjvv-59mq-w48v
Severity by source
AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Description states a remote attacker achieves arbitrary code execution via heap overflow with no stated auth or interaction, giving AV:N/AC:L/PR:N/UI:N and full C/I/A impact.
Primary rating from Vendor (us).
CVSS VectorNVD
Lifecycle Timeline
6DescriptionNVD
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 heap-based buffer overflow.
AnalysisAI
Remote code execution in IBM AIX 7.2/7.3 and IBM PowerVM VIOS 4.1 stems from a heap-based buffer overflow (CWE-787) that a remote attacker can trigger over the network without authentication or user interaction. Per its CVSS 3.1 vector (AV:N/AC:L/PR:N/UI:N) the flaw is critical (9.8) with total confidentiality, integrity, and availability impact, though the description does not name the specific network service or daemon that parses the malformed input. …
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Attack ChainAIDerived
Hypothetical attack flow derived from CVE metadata
Vulnerability AssessmentAI
| Exploitation | The CVSS vector is AV:N/AC:L/PR:N/UI:N, indicating remote, low-complexity exploitation with no authentication or user interaction; however, the description does not name the exact vulnerable service, so exploitation concretely requires that the affected (unspecified) AIX/VIOS network daemon be reachable from the attacker. … Additional conditions and limiting factors are described in the full assessment. |
| Risk Assessment | The signals here are notably split. … 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 fix from IBM's official advisory at https://www.ibm.com/support/pages/node/7283858 (Patch available per vendor advisory - no exact fix version or APAR/iFix identifier is included in the provided data, so consult that advisory for the precise interim fix/service pack for your AIX 7.2, AIX 7.3, or VIOS 4.1 level). … 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 implement network segmentation to restrict their external connectivity; enable network-based intrusion detection systems (IDS) monitoring for exploits targeting these systems. …
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Same weakness CWE-787 – Out-of-bounds Write
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External POC / Exploit Code
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