EUVD-2026-62746
GHSA-6rxg-jgxq-pq8f
Severity by source
AV:A/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H
Adjacent vector confirmed by nature of network-triggered DoS; S:C reflects VIOS crash cascading to hosted LPARs; pure availability impact with no confidentiality or integrity effect.
Primary rating from Vendor (ibm).
CVSS VectorNVD
CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:C/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 a use-after-free.
AnalysisAI
Denial of service via use-after-free in IBM AIX 7.2 and 7.3 and IBM PowerVM VIOS 4.1 allows an unauthenticated attacker on an adjacent network to crash affected systems by triggering a memory corruption condition. The scope change (S:C) in the CVSS vector is significant in virtualization contexts: a successful attack against PowerVM VIOS could cascade to hosted virtual machines, amplifying the availability impact beyond the directly targeted component. …
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Attack ChainAIDerived
Hypothetical attack flow derived from CVE metadata
Vulnerability AssessmentAI
| Exploitation | The attacker must be network-adjacent to the target - meaning same broadcast domain, VLAN, or otherwise layer-2 adjacent - as confirmed by AV:A in the CVSS vector; remote internet-based exploitation is not possible. … Additional conditions and limiting factors are described in the full assessment. |
| Risk Assessment | The CVSS 7.4 score reflects a genuine but access-constrained threat. … Full risk analysis with EPSS, KEV, and SSVC signal comparison available after sign-in. |
| Exploit Scenario | An attacker with access to the same network segment as a target IBM AIX or PowerVM VIOS host - for example, another server in the same data center VLAN or a compromised internal host - sends specially crafted network traffic that triggers the use-after-free condition. The kernel or VIOS process accesses freed memory, causing a crash and system unavailability. … |
| Remediation | IBM has released a patch, available via the official advisory at https://www.ibm.com/support/pages/node/7283858. … 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 assess network exposure and criticality. …
Sign in for detailed remediation steps and compensating controls.
Threat intelligence, references, and detailed analysis are available after sign-in.
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lquerylv in cmdlvm in IBM AIX 5.3, 6.1, and 7.1 and VIOS 2.2.x allows local users to gain privileges via a crafted DBGCM
libodm.a in IBM AIX 5.3, 6.1, and 7.1 allows local users to overwrite arbitrary files via a symlink attack on a temporar
libodm.a in IBM AIX 6.1 and 7.1, and VIOS 2.2.x, allows local users to overwrite arbitrary files via a symlink attack on
IBM AIX 7.2 and 7.3 nimesis NIM master service could allow a remote attacker to execute arbitrary commands due to improp
OS command injection in IBM AIX 7.2 and 7.3 and in IBM PowerVM VIOS 4.1 lets a remote, authenticated attacker execute ar
OS command injection in IBM AIX 7.2/7.3 and PowerVM VIOS 4.1 lets a remote authenticated attacker run arbitrary commands
Remote code execution in IBM AIX 7.2 and 7.3 and IBM PowerVM VIOS 4.1 allows an unauthenticated remote attacker to run a
Same weakness CWE-416 – Use After Free
View allSame technique Use After Free
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External POC / Exploit Code
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