EUVD-2026-63744
GHSA-6j6j-jvr6-vgr4
Severity by source
AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Description states remote arbitrary code execution via heap overflow with no stated auth or interaction, so 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 PowerVM VIOS 4.1 stems from a heap-based buffer overflow (CWE-787) that a remote attacker can trigger without authentication or user interaction, per the CVSS 9.8 vector. Successful exploitation yields full compromise of the affected Unix host or virtualization I/O server. …
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Attack ChainAIDerived
Hypothetical attack flow derived from CVE metadata
Vulnerability AssessmentAI
| Exploitation | The CVSS vector (AV:N/AC:L/PR:N/UI:N) indicates no special conditions beyond network reachability - remote unauthenticated exploitation of IBM AIX 7.2/7.3 or PowerVM VIOS 4.1 without user interaction. … Additional conditions and limiting factors are described in the full assessment. |
| Risk Assessment | The CVSS 3.1 base score of 9.8 reflects the worst-case profile: network attack vector, low complexity, no privileges, no user interaction, and total confidentiality/integrity/availability impact - consistent with SSVC 'Technical Impact: total.' However, the corroborating exploitation signals temper this: EPSS is only 0.41% (35th percentile), SSVC rates 'Exploitation: none' and 'Automatable: no,' this CVE is not on CISA KEV, and no public proof-of-concept exists. … 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 IBM's fix as described in the vendor advisory at https://www.ibm.com/support/pages/node/7283858; the advisory is the authoritative source for the exact interim fix (iFix), APAR, or Service Pack level for AIX 7.2, AIX 7.3, and VIOS 4.1 - cite that level from IBM once obtained rather than an assumed version, as no exact fixed version is provided in this input data (Patch available per vendor advisory). … Detailed patch versions, workarounds, and compensating controls in full report. |
Recommended ActionAI
Within 24 hours, identify all systems running IBM AIX 7.2, 7.3, or PowerVM VIOS 4.1 in your environment and classify by criticality and network exposure. …
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Remote code execution in IBM AIX 7.2/7.3 and PowerVM VIOS 4.1 stems from a buffer overflow (out-of-bounds write) that a
Remote code execution in IBM AIX 7.2/7.3 and PowerVM VIOS 4.1 stems from a buffer overflow (out-of-bounds write) that a
Remote code execution in IBM AIX 7.2 and 7.3, and IBM PowerVM VIOS 4.1, stems from a stack-based buffer overflow (CWE-78
Same weakness CWE-787 – Out-of-bounds Write
View allSame technique Memory Corruption
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External POC / Exploit Code
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