EUVD-2026-62735
GHSA-7c39-w5pm-p52w
Severity by source
AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Description states a remote attacker can execute arbitrary code 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 (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 heap buffer overflow.
AnalysisAI
Remote code execution in IBM AIX 7.2/7.3 and IBM PowerVM VIOS 4.1 allows a remote attacker to run arbitrary code by triggering a heap buffer overflow (CWE-787 out-of-bounds write) in an affected network-facing component. The CVSS 9.8 vector (AV:N/AC:L/PR:N/UI:N) indicates unauthenticated, low-complexity network exploitation with full confidentiality, integrity, and availability impact. …
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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 - remote unauthenticated exploitation over the network against IBM AIX 7.2/7.3 and PowerVM VIOS 4.1, requiring no authentication and no user interaction. … Additional conditions and limiting factors are described in the full assessment. |
| Risk Assessment | Multiple raw signals point to high priority: CVSS 3.1 base 9.8 with AV:N/AC:L/PR:N/UI:N/C:H/I:H/A:H means no authentication, no user interaction, low complexity, and total system compromise. … 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 that overflows a heap-allocated buffer, corrupting heap structures to hijack control flow and execute arbitrary code on the host without any credentials or user interaction. On a VIOS, such compromise could cascade to the virtualized storage/network of hosted LPARs. … |
| Remediation | Patch available per vendor advisory - apply the IBM-provided fix/interim fix (iFix) referenced at https://www.ibm.com/support/pages/node/7283858 for the affected AIX 7.2, AIX 7.3, and PowerVM VIOS 4.1 levels; the provided data confirms a patch is available but does not name an exact fixed fileset version, so pull the precise APAR/iFix from that advisory and match it to your installed fileset 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 assess exposure to untrusted networks; prioritize systems exposed to the internet or unfamiliar networks. …
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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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