EUVD-2026-62717
GHSA-xpr3-qcjq-5q6q
Severity by source
AV:A/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H
Adjacent vector and high complexity match vendor-assigned metrics; PR:N confirmed since no credential is needed; only availability is impacted by the DoS crash with no scope change.
Primary rating from Vendor (ibm).
CVSS VectorNVD
CVSS:3.1/AV:A/AC:H/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 a NULL pointer dereference.
AnalysisAI
Denial of service in IBM AIX 7.2/7.3 and PowerVM VIOS 4.1 is achievable by an adjacent-network attacker through a NULL pointer dereference in a network-handling code path. Exploitation requires no authentication but demands high attack complexity, substantially limiting opportunistic or internet-scale attacks. …
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Attack ChainAIDerived
Hypothetical attack flow derived from CVE metadata
Vulnerability AssessmentAI
| Exploitation | The attacker must have adjacent-network access - occupying the same network segment, subnet, or broadcast domain as the target - which rules out direct exploitation from the internet without a prior foothold or network pivot. … Additional conditions and limiting factors are described in the full assessment. |
| Risk Assessment | The CVSS base score of 5.3 (Medium) accurately reflects constrained but real risk. … Full risk analysis with EPSS, KEV, and SSVC signal comparison available after sign-in. |
| Exploit Scenario | An attacker already positioned on the same network segment as a target IBM AIX 7.2/7.3 or PowerVM VIOS 4.1 system sends specially crafted network frames or protocol messages engineered to trigger a NULL pointer dereference in a kernel or network-service code path. The dereference causes a system crash or hang, producing a denial of service that - on a VIOS system - may cascade to affect all logical partitions sharing that I/O server. … |
| Remediation | IBM has released a patch addressing this vulnerability; retrieve the specific APAR number, fileset, or interim fix applicable to AIX 7.2, AIX 7.3, and PowerVM VIOS 4.1 directly from the vendor advisory at https://www.ibm.com/support/pages/node/7283858, and apply it following standard IBM AIX maintenance procedures. … Detailed patch versions, workarounds, and compensating controls in full report. |
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Same weakness CWE-476 – NULL Pointer Dereference
View allSame technique Null Pointer Dereference
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External POC / Exploit Code
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