EUVD-2026-71484
GHSA-qf4g-ggmg-f869
Severity by source
AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N
Requires authenticated session (PR:L); service-name matching flaw yields partial C and I impact only, no availability effect, no scope change.
Primary rating from Vendor (ibm).
CVSS VectorVendor: ibm
Lifecycle Timeline
1DescriptionCVE.org
IBM i 7.6, 7.5, 7.4, and 7.3 could allow a remote authenticated attacker to bypass security restrictions due to improper authentication during service-name matching.
AnalysisAI
Remote authenticated attackers can bypass security restrictions in IBM i 7.3 through 7.6 by exploiting improper authentication logic during service-name matching (CWE-287). The flaw allows a low-privileged authenticated user to overstep their authorized service boundaries, achieving limited unauthorized reads and writes with no user interaction required. …
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Attack ChainAIDerived
Hypothetical attack flow derived from CVE metadata
Vulnerability AssessmentAI
| Exploitation | Exploitation requires a valid authenticated session on the IBM i system (PR:L per CVSS); unauthenticated remote attackers cannot leverage this flaw. … Additional conditions and limiting factors are described in the full assessment. |
| Risk Assessment | The CVSS 3.1 vector CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N translates to a medium-severity finding: network-reachable, low complexity, but requiring prior authentication (PR:L), with only partial confidentiality and integrity impact and no availability effect. … 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 | IBM has released a patch, details and PTF (Program Temporary Fix) identifiers are published at https://www.ibm.com/support/pages/node/7285843 - administrators should consult that page to identify the correct PTF for their specific IBM i release (7.3, 7.4, 7.5, or 7.6) and apply it via the IBM i PTF installation process. … Detailed patch versions, workarounds, and compensating controls in full report. |
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Same weakness CWE-287 – Improper Authentication
View allSame technique Authentication Bypass
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External POC / Exploit Code
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