EUVD-2026-62872
GHSA-gvpr-6m55-ffxw
Severity by source
AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Network-reachable service, low complexity, authenticated (PR:L) remote exploitation yielding full stack control; scope unchanged as impact is limited to the compromised partition.
Primary rating from Vendor (ibm).
CVSS VectorNVD
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Lifecycle Timeline
2DescriptionNVD
IBM AIX 7.2, and 7.3 and IBM PowerVM VIOS 4.1 could allow a remote authenticated attacker to execute arbitrary code due to a stack-based buffer overflow.
AnalysisAI
Stack-based buffer overflow in IBM AIX 7.2 and 7.3 and IBM PowerVM VIOS 4.1 enables remote authenticated attackers to execute arbitrary code, achieving full compromise of confidentiality, integrity, and availability. The CVSS 8.8 score reflects low-complexity network exploitation requiring only low-privilege authentication (PR:L), making it accessible to any credentialed user on the system. …
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Attack ChainAIDerived
Hypothetical attack flow derived from CVE metadata
Vulnerability AssessmentAI
| Exploitation | Exploitation requires authenticated network access with at least low-privilege credentials (PR:L per CVSS vector AV:N/AC:L/PR:L/UI:N). … Additional conditions and limiting factors are described in the full assessment. |
| Risk Assessment | The CVSS 8.8 base score is credible and justified: AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H indicates a low-friction network attack constrained only by requiring low-privilege authentication. … Full risk analysis with EPSS, KEV, and SSVC signal comparison available after sign-in. |
| Exploit Scenario | An attacker with low-privilege credentials - such as a service account, operator login, or credentials obtained through phishing - authenticates to a vulnerable IBM AIX 7.2/7.3 or PowerVM VIOS 4.1 system over the network and sends a specially crafted request to a vulnerable networked service or daemon, triggering a stack-based buffer overflow. By overwriting the saved return pointer, the attacker redirects execution to shellcode or a ROP chain, gaining arbitrary code execution potentially at elevated privileges. … |
| Remediation | Apply the vendor-released patch documented in IBM Security Advisory at https://www.ibm.com/support/pages/node/7283858. … Detailed patch versions, workarounds, and compensating controls in full report. |
Recommended ActionAI
Within 24 hours: Conduct an inventory of all IBM AIX 7.2, 7.3, and PowerVM VIOS 4.1 systems, document their criticality classification, and check IBM's security advisories for patch availability. …
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Same weakness CWE-121 – Stack-based Buffer Overflow
View allSame technique Stack Overflow
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External POC / Exploit Code
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