EUVD-2026-62854
GHSA-3h6w-92g2-xgrr
Severity by source
AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H
Network-reachable service requires low-privilege credentials (PR:L); out-of-bounds read yields high confidentiality and availability impact with no integrity effect.
Primary rating from Vendor (ibm).
CVSS VectorNVD
Lifecycle Timeline
5DescriptionNVD
IBM i 7.6, 7.5, 7.4, and 7.3 could allow a remote authenticated attacker to cause a denial of service and obtain sensitive information due to an out-of-bounds read.
AnalysisAI
Remote authenticated exploitation of IBM i versions 7.3 through 7.6 via an out-of-bounds read (CWE-125) enables attackers to both crash the system and exfiltrate sensitive data from adjacent memory regions. The CVSS 8.1 score (AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H) reflects significant dual confidentiality and availability impact achievable over the network without user interaction, though a minimum of low-privilege credentials is required, limiting the attack surface to authenticated accounts. …
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Attack ChainAIDerived
Hypothetical attack flow derived from CVE metadata
Vulnerability AssessmentAI
| Exploitation | Exploitation requires the attacker to possess at minimum a low-privilege authenticated account on the target IBM i system (CVSS PR:L confirmed); unauthenticated remote exploitation is not possible per the CVSS vector. … Additional conditions and limiting factors are described in the full assessment. |
| Risk Assessment | The CVSS 8.1 score reflects a genuinely elevated risk profile: network-reachable (AV:N), low complexity (AC:L), no user interaction required (UI:N), with both high confidentiality (C:H) and high availability (A:H) impact. … 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-issued patch by consulting the vendor advisory at https://www.ibm.com/support/pages/node/7284068, which contains the applicable PTF (Program Temporary Fix) identifiers for each IBM i release (7.3, 7.4, 7.5, 7.6). … Detailed patch versions, workarounds, and compensating controls in full report. |
Recommended ActionAI
Within 24 hours, complete an inventory of all IBM i systems in production and non-production environments, specifically identifying those running versions 7.3 through 7.6 and documenting the scope of authenticated user accounts. …
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Same weakness CWE-125 – Out-of-bounds Read
View allSame technique Buffer Overflow
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External POC / Exploit Code
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