EUVD-2026-67948
GHSA-6rjg-22x4-mfvp
Severity by source
AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Local-only attack surface (AV:L) with low-privilege account required (PR:L); format string exploitation is straightforward (AC:L) with full system compromise upon success.
Primary rating from Vendor (ibm).
CVSS VectorNVD
Lifecycle Timeline
6DescriptionNVD
IBM AIX 7.2, and 7.3 and IBM PowerVM VIOS 4.1 could allow a local attacker to gain elevated privileges due to a format string vulnerability.
AnalysisAI
Local privilege escalation in IBM AIX 7.2, 7.3 and IBM PowerVM VIOS 4.1 exploits a format string vulnerability (CWE-134) to allow a low-privileged local attacker to gain elevated - potentially root-level - privileges with full confidentiality, integrity, and availability impact. No public exploit code or active exploitation has been identified at time of analysis; EPSS sits at 0.10% (1st percentile), consistent with an SSVC exploitation status of 'none'. …
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Attack ChainAIDerived
Hypothetical attack flow derived from CVE metadata
Vulnerability AssessmentAI
| Exploitation | Exploitation requires an existing local account on the affected IBM AIX 7.2/7.3 or PowerVM VIOS 4.1 system - remote unauthenticated exploitation is not possible (AV:L, PR:L). … Additional conditions and limiting factors are described in the full assessment. |
| Risk Assessment | The CVSS 7.8 vector (AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H) accurately reflects local, low-complexity exploitation requiring only an existing unprivileged account - no user interaction or special configuration needed. … 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 IBM-supplied patch documented at https://www.ibm.com/support/pages/node/7283858 - this is the primary and recommended fix; an exact patched build version should be confirmed from that advisory page, as the input data confirms patch availability without specifying the exact fix version number. … Detailed patch versions, workarounds, and compensating controls in full report. |
Recommended ActionAI
Within 24 hours, inventory all systems running IBM AIX 7.2, 7.3, or PowerVM VIOS 4.1 and document which have low-privileged user or service accounts that could be leveraged for exploitation. …
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Same weakness CWE-134 – Use of Externally-Controlled Format String
View allSame technique Privilege Escalation
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External POC / Exploit Code
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