EUVD-2026-62720
GHSA-v4w4-xvfv-6hg4
Severity by source
AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
Network-accessible unauthenticated out-of-bounds read in the kernel leaks partial memory; no integrity or availability impact applies to this read-only disclosure flaw.
Primary rating from Vendor (ibm).
CVSS VectorNVD
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
Lifecycle Timeline
2DescriptionNVD
IBM AIX 7.2, and 7.3 and IBM PowerVM VIOS 4.1 could allow a remote attacker to disclose kernel memory due to an out-of-bounds read.
AnalysisAI
Kernel memory disclosure in IBM AIX 7.2, 7.3 and IBM PowerVM VIOS 4.1 exposes internal kernel memory to remote unauthenticated attackers via an out-of-bounds read (CWE-125). The CVSS:3.1 vector AV:N/AC:L/PR:N/UI:N confirms network-accessible, zero-prerequisite exploitation, though impact is bounded to partial confidentiality loss with no integrity or availability consequences. …
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Attack ChainAIDerived
Hypothetical attack flow derived from CVE metadata
Vulnerability AssessmentAI
| Exploitation | The CVSS vector AV:N/AC:L/PR:N/UI:N indicates no special conditions are required beyond network reachability - remote unauthenticated exploitation against default configurations of IBM AIX 7.2, 7.3 and PowerVM VIOS 4.1. … Additional conditions and limiting factors are described in the full assessment. |
| Risk Assessment | The CVSS base score of 5.3 Medium with vector AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N presents an interesting risk profile worth careful decomposition. … Full risk analysis with EPSS, KEV, and SSVC signal comparison available after sign-in. |
| Exploit Scenario | A remote unauthenticated attacker sends a specially crafted network packet to an exposed IBM AIX or PowerVM VIOS system, triggering the out-of-bounds read in a kernel-level handler. The kernel reads beyond the intended buffer boundary and returns fragments of adjacent kernel memory in the response. … |
| Remediation | IBM has released a patch addressing this vulnerability; organizations should consult the vendor advisory at https://www.ibm.com/support/pages/node/7283858 for exact fix levels (Technology Level or Service Pack) applicable to AIX 7.2, 7.3, and PowerVM VIOS 4.1. … Detailed patch versions, workarounds, and compensating controls in full report. |
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Same weakness CWE-125 – Out-of-bounds Read
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External POC / Exploit Code
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