EUVD-2026-62827
GHSA-j5w7-w885-v6wq
Severity by source
AV:L/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H
Local-only vector with high-privilege requirement confirmed; availability-only impact with no confidentiality or integrity effect per description.
Primary rating from Vendor (us).
CVSS VectorVendor: us
Lifecycle Timeline
1DescriptionCVE.org
IBM AIX 7.2, and 7.3 and IBM PowerVM VIOS 4.1 could allow a local attacker to cause a denial of service due to an out-of-bounds write.
AnalysisAI
Local denial-of-service in IBM AIX 7.2 and 7.3, and IBM PowerVM VIOS 4.1 allows a high-privileged local attacker to crash the system via an out-of-bounds write condition. The attack is constrained to local access with elevated privileges (PR:H per CVSS), limiting the practical blast radius primarily to insider threats or post-compromise scenarios. …
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Attack ChainAIDerived
Hypothetical attack flow derived from CVE metadata
Vulnerability AssessmentAI
| Exploitation | Exploitation requires local system access with high privileges (PR:H, AV:L per the CVSS:3.1 vector), meaning the attacker must already hold root or an equivalent high-privilege role on the affected IBM AIX or PowerVM VIOS partition. … Additional conditions and limiting factors are described in the full assessment. |
| Risk Assessment | The CVSS base score of 4.4 (Medium) accurately reflects the constrained threat model: AV:L requires physical or authenticated shell access to the affected system; PR:H demands high-privilege credentials (e.g., root or a privileged role); AC:L indicates no special timing or race condition is needed once access is obtained; and the impact is limited entirely to availability (A:H), with C:N and I:N confirming no data exfiltration or integrity risk. … 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 | Consult the IBM support advisory at https://www.ibm.com/support/pages/node/7283858 for the specific fix level, IFix, or Technology Level update that addresses CVE-2026-16897 in IBM AIX 7.2, AIX 7.3, and PowerVM VIOS 4.1. … Detailed patch versions, workarounds, and compensating controls in full report. |
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Remote code execution in IBM AIX 7.2 and 7.3 (and IBM PowerVM VIOS 4.1) stems from a stack-based buffer overflow that le
Remote code execution in IBM AIX 7.2/7.3 and PowerVM VIOS 4.1 stems from a buffer overflow (out-of-bounds write) that a
Remote code execution in IBM AIX 7.2/7.3 and PowerVM VIOS 4.1 stems from a buffer overflow (out-of-bounds write) that a
Remote code execution in IBM AIX 7.2 and 7.3, and IBM PowerVM VIOS 4.1, stems from a stack-based buffer overflow (CWE-78
Same weakness CWE-369 – Divide By Zero
View allSame technique Buffer Overflow
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External POC / Exploit Code
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