EUVD-2026-63745
GHSA-949r-65gv-mrq4
Severity by source
AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Local attack vector and low-privilege requirement are confirmed by the description; full C/I/A impact is consistent with kernel-level privilege escalation via memory corruption.
Primary rating from NVD.
CVSS VectorNVD
Lifecycle Timeline
5DescriptionNVD
IBM AIX 7.2, and 7.3 and IBM PowerVM VIOS 4.1 could allow a local attacker to gain elevated privileges due to an out-of-bounds write.
AnalysisAI
Local privilege escalation in IBM AIX 7.2 and 7.3 and IBM PowerVM VIOS 4.1 allows a low-privileged local attacker to gain elevated privileges by exploiting an out-of-bounds write (CWE-787) memory corruption flaw. The vulnerability affects IBM's enterprise Unix operating system and its virtualization platform, with full confidentiality, integrity, and availability impact confirmed by the CVSS vector. …
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Attack ChainAIDerived
Hypothetical attack flow derived from CVE metadata
Vulnerability AssessmentAI
| Exploitation | Exploitation requires an existing local session on the target system with at least low-privilege (non-root) user access, consistent with CVSS PR:L. … Additional conditions and limiting factors are described in the full assessment. |
| Risk Assessment | Despite a CVSS base score of 7.8 and SSVC technical impact rated as total, the overall real-world risk is moderated significantly by the local-only attack vector (AV:L). … Full risk analysis with EPSS, KEV, and SSVC signal comparison available after sign-in. |
| Exploit Scenario | Full exploit scenario with step-by-step reproduction available after sign-in. |
| Remediation | The primary remediation is to apply the fix documented in IBM Security Advisory at https://www.ibm.com/support/pages/node/7283858 (IBM Support pages node 7283858). … Detailed patch versions, workarounds, and compensating controls in full report. |
Recommended ActionAI
Within 24 hours, conduct an inventory of systems running AIX 7.2, 7.3, or PowerVM VIOS 4.1 and classify by criticality; document the count of active local user accounts on each system. …
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Same weakness CWE-787 – Out-of-bounds Write
View allSame technique Buffer Overflow
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External POC / Exploit Code
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