EUVD-2026-62747
GHSA-r9qv-gv57-mv22
Severity by source
AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Network-reachable integer overflow requiring no authentication or interaction; impact is availability-only with no confidentiality or integrity consequence.
Primary rating from Vendor (ibm).
CVSS VectorNVD
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Lifecycle Timeline
2DescriptionNVD
IBM AIX 7.2, and 7.3 and IBM PowerVM VIOS 4.1 could allow a remote attacker to cause a denial of service due to an integer overflow.
AnalysisAI
Remote denial of service in IBM AIX 7.2, AIX 7.3, and PowerVM VIOS 4.1 allows an unauthenticated network attacker to crash affected systems by triggering an integer overflow in a network-reachable component. The CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H vector confirms full availability loss with no authentication or user interaction required. …
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Attack ChainAIDerived
Hypothetical attack flow derived from CVE metadata
Vulnerability AssessmentAI
| Exploitation | No special conditions are required beyond network reachability to the target system: the CVSS vector CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H confirms remote unauthenticated exploitation against network-exposed AIX 7.2/7.3 or PowerVM VIOS 4.1 systems. … Additional conditions and limiting factors are described in the full assessment. |
| Risk Assessment | The CVSS 7.5 score is well-supported by the vector: AV:N/AC:L/PR:N/UI:N establishes that an unauthenticated remote attacker on any network path can trigger the flaw with low effort, and the A:H metric reflects that a successful exploit causes a full denial of service. … Full risk analysis with EPSS, KEV, and SSVC signal comparison available after sign-in. |
| Exploit Scenario | An unauthenticated attacker on a network path to a vulnerable AIX or PowerVM VIOS host sends a specially crafted packet or series of packets to a listening network service, triggering an integer overflow in the service's input-processing code. The overflow corrupts internal state - such as a buffer length or allocation size - causing the process or kernel to crash, resulting in a system-wide denial of service or loss of all LPAR I/O on a VIOS host. … |
| Remediation | A vendor-released patch is available per IBM's advisory at https://www.ibm.com/support/pages/node/7283858; administrators should consult this page for the exact fix level (Technology Level or Service Pack) applicable to their installed AIX 7.2, AIX 7.3, or PowerVM VIOS 4.1 version, as no specific patched version number was published in the available intelligence data. … Detailed patch versions, workarounds, and compensating controls in full report. |
Recommended ActionAI
Within 24 hours, inventory all systems running IBM AIX 7.2, AIX 7.3, or PowerVM VIOS 4.1 and assess their network exposure. …
Sign in for detailed remediation steps and compensating controls.
Threat intelligence, references, and detailed analysis are available after sign-in.
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Same weakness CWE-190 – Integer Overflow or Wraparound
View allSame technique Integer Overflow
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External POC / Exploit Code
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