EUVD-2026-63631
GHSA-h9w2-4pvq-xvc7
Severity by source
AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Local symlink exploitation requires only a low-privilege shell (PR:L, AV:L); no interaction or special conditions needed; full filesystem manipulation yields C:H/I:H/A:H with no scope change.
Primary rating from Vendor (ibm).
CVSS VectorVendor: ibm
Lifecycle Timeline
2DescriptionCVE.org
IBM AIX 7.2, and 7.3 and IBM PowerVM VIOS 4.1 could allow a local attacker to gain elevated privileges due to improper handling of symbolic links.
AnalysisAI
Local privilege escalation in IBM AIX 7.2, 7.3 and PowerVM VIOS 4.1 enables any low-privileged authenticated user to achieve full system compromise through improper symbolic link handling. The CVSS 7.8 vector (AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H) confirms complete confidentiality, integrity, and availability impact with no user interaction required. …
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Attack ChainAIDerived
Hypothetical attack flow derived from CVE metadata
Vulnerability AssessmentAI
| Exploitation | Exploitation requires a valid local user account with the ability to create symbolic links on the target filesystem - a capability available to any standard authenticated AIX or VIOS local user (PR:L). … Additional conditions and limiting factors are described in the full assessment. |
| Risk Assessment | The CVSS 7.8 High score is well-grounded: AV:L/AC:L/PR:L/UI:N reflects a low-friction, post-authentication local exploit requiring no special timing or interaction. … 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 | Apply the vendor-released patch per IBM advisory 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 patch availability via IBM advisory https://www.ibm.com/support/pages/node/7283858. …
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Same weakness CWE-269 – Improper Privilege Management
View allSame technique Privilege Escalation
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External POC / Exploit Code
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