EUVD-2026-71479
GHSA-2w8m-jj3m-r3p3
Severity by source
AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Network-reachable with low complexity but requires authenticated access (PR:L); impact is availability-only and partial per IBM's assessment, with no confidentiality or integrity exposure.
Primary rating from Vendor (ibm).
CVSS VectorNVD
Lifecycle Timeline
2DescriptionNVD
IBM i 7.6, 7.5, 7.4, and 7.3 could allow a remote authenticated attacker to cause a denial of service due to a stack-based buffer overflow.
AnalysisAI
Stack-based buffer overflow in IBM i 7.3 through 7.6 allows remote authenticated attackers to cause a denial of service by sending specially crafted network input that exceeds a stack-allocated buffer in a network-accessible component. The vulnerability is gated behind low-privilege authentication (PR:L) and carries no confidentiality or integrity impact, as IBM's advisory scores it CVSS 4.3 with A:L. …
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Attack ChainAIDerived
Hypothetical attack flow derived from CVE metadata
Vulnerability AssessmentAI
| Exploitation | Exploitation requires a valid IBM i user account with at least low-privilege access (CVSS PR:L), ruling out unauthenticated remote exploitation. … Additional conditions and limiting factors are described in the full assessment. |
| Risk Assessment | The vendor CVSS score of 4.3 (AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L) signals medium-low real-world 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 | Apply the IBM-released PTF (Program Temporary Fix) documented at https://www.ibm.com/support/pages/node/7285844, which addresses all four affected releases (7.3, 7.4, 7.5, 7.6). … Detailed patch versions, workarounds, and compensating controls in full report. |
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Same weakness CWE-121 – Stack-based Buffer Overflow
View allSame technique Buffer Overflow
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External POC / Exploit Code
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