EUVD-2026-62750
GHSA-84mv-7973-x7m2
Severity by source
AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Stack overflow described as remote arbitrary code execution with no stated auth or interaction, so AV:N/PR:N/UI:N and full C:H/I:H/A:H; AC:L retained absent evidence of exploitation hurdles.
Primary rating from Vendor (ibm).
CVSS VectorNVD
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Lifecycle Timeline
2DescriptionNVD
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 7.2/7.3 and PowerVM VIOS 4.1 stems from a stack buffer overflow (CWE-787) that a network-based attacker can trigger without authentication or user interaction, per the CVSS 3.1 vector (AV:N/AC:L/PR:N/UI:N). IBM has published a fix, and no public exploit has been identified at time of analysis, though the 9.8 base score reflects full compromise of confidentiality, integrity, and availability. …
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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 documented - remote unauthenticated exploitation with no user interaction against affected IBM AIX 7.2/7.3 and PowerVM VIOS 4.1 systems. … Additional conditions and limiting factors are described in the full assessment. |
| Risk Assessment | The signals point to a genuine high-priority issue rather than a high-CVSS paper tiger: the CVSS 3.1 vector (AV:N/AC:L/PR:N/UI:N, base 9.8) describes remote, unauthenticated, low-complexity RCE with total impact, and a vendor patch already exists, indicating IBM has validated the flaw. … Full risk analysis with EPSS, KEV, and SSVC signal comparison available after sign-in. |
| Exploit Scenario | An attacker with network reachability to an affected AIX or VIOS system sends crafted input to the vulnerable network-facing service, overflowing a fixed-size stack buffer and overwriting the return address to hijack control flow. Given AV:N/AC:L/PR:N/UI:N, this requires neither credentials nor user interaction, yielding arbitrary code execution with the privileges of the affected service. … |
| Remediation | Patch available per vendor advisory: apply the IBM-supplied fix referenced at https://www.ibm.com/support/pages/node/7283858, which covers AIX 7.2, AIX 7.3, and PowerVM VIOS 4.1 (consult the advisory for the exact iFix/APAR and TL/SP level matching your installation, as those specific version identifiers are not included in the provided data). … 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 and prioritize by business criticality; immediately establish a patching task force and begin testing the IBM-provided patch in isolated non-production environments. …
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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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