EUVD-2026-63714
GHSA-xmxq-3r5r-687q
Severity by source
AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Description states remote attacker and stack overflow enabling code execution with no auth or interaction (AV:N/AC:L/PR:N/UI:N); RCE yields total C/I/A impact within the same system (S:U).
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 stack-based buffer overflow.
AnalysisAI
Remote code execution in IBM AIX 7.2/7.3 and IBM PowerVM VIOS 4.1 arises from a stack-based buffer overflow (CWE-121) that a remote attacker can trigger without authentication or user interaction, yielding total compromise of these Power-based enterprise Unix and virtualization-management systems. The CVSS 9.8 rating reflects a fully remote, low-complexity path to arbitrary code execution with high confidentiality, integrity, and availability impact. …
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Attack ChainAIDerived
Hypothetical attack flow derived from CVE metadata
Vulnerability AssessmentAI
| Exploitation | Network reachability to the affected IBM AIX 7.2/7.3 or PowerVM VIOS 4.1 service is required; per the CVSS vector (AV:N/AC:L/PR:N/UI:N) no authentication and no user interaction are needed, so exploitation works against a reachable default-configured instance. … Additional conditions and limiting factors are described in the full assessment. |
| Risk Assessment | Signals are mixed but lean toward a genuine high priority. … 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 the primary remediation: consult the IBM PSIRT advisory at https://www.ibm.com/support/pages/node/7283858 and install the interim fix (ifix) or corrected technology level/service pack that IBM specifies for your exact 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, conduct a comprehensive scan to identify all systems running IBM AIX 7.2, 7.3, or PowerVM VIOS 4.1, prioritizing those hosting business-critical applications, and document network accessibility from untrusted segments. …
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Remote code execution in IBM AIX 7.2 and 7.3 (and IBM PowerVM VIOS 4.1) stems from a stack-based buffer overflow that le
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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 and 7.3, and IBM PowerVM VIOS 4.1, stems from a stack-based buffer overflow (CWE-78
Same weakness CWE-121 – Stack-based Buffer Overflow
View allSame technique Stack Overflow
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External POC / Exploit Code
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