EUVD-2026-62864
GHSA-9467-h86m-9p84
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 stack 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 (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 execute arbitrary code due to a stack buffer overflow.
AnalysisAI
Remote code execution in IBM AIX 7.2 and 7.3 and IBM PowerVM VIOS 4.1 allows an unauthenticated remote attacker to run arbitrary code by triggering a stack-based buffer overflow, per the vendor-assigned CVSS 3.1 vector of AV:N/AC:L/PR:N/UI:N. IBM (the reporting party) has published a fix, and no public exploit identified at time of analysis. …
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Attack ChainAIDerived
Hypothetical attack flow derived from CVE metadata
Vulnerability AssessmentAI
| Exploitation | The affected system must be running IBM AIX 7.2/7.3 or PowerVM VIOS 4.1 with the vulnerable network-facing service reachable by the attacker; per the CVSS vector (AV:N/AC:L/PR:N/UI:N) no authentication, no user interaction, and no special non-default configuration are stated as prerequisites, so a default deployment exposing the affected service to the attacker is sufficient. … Additional conditions and limiting factors are described in the full assessment. |
| Risk Assessment | All available signals point to genuine high priority: the CVSS 3.1 vector AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H describes remote, low-complexity, unauthenticated exploitation with full compromise of confidentiality, integrity, and availability, and the RCE/Buffer Overflow tags reinforce a memory-corruption code-execution outcome. … 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 VIOS service sends a crafted request whose oversized field overflows a stack buffer, overwriting the saved return address to redirect execution into attacker-controlled shellcode. Because no authentication or user interaction is required (PR:N/UI:N), successful exploitation yields arbitrary code execution on the host; no public exploit identified at time of analysis, so this scenario is inferred from the CVSS vector and CWE-121 root cause. |
| Remediation | Apply the vendor fix referenced in IBM support advisory https://www.ibm.com/support/pages/node/7283858 (Patch available per vendor advisory); the IBM page provides the specific interim fixes or APAR/service-pack levels for AIX 7.2, AIX 7.3, and VIOS 4.1, which should be installed on all affected systems since the input does not disclose an exact tagged fix version to cite here. … Detailed patch versions, workarounds, and compensating controls in full report. |
Recommended ActionAI
Within 24 hours, identify and catalog all IBM AIX 7.2, 7.3, and PowerVM VIOS 4.1 systems in your infrastructure, focusing on those exposed to external networks or internet-accessible services. …
Sign in for detailed remediation steps and compensating controls.
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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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