EUVD-2026-71470
GHSA-7m9p-5xg7-97w7
Severity by source
AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
Description specifies local authenticated attacker, so AV:L and PR:L; impact is availability-only (A:L), consistent with DoS via service crash.
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 local authenticated attacker to cause a denial of service due to an off-by-one write in the LPD queue name parser.
AnalysisAI
Denial of service on IBM i versions 7.3 through 7.6 is achievable by exploiting an off-by-one write in the LPD (Line Printer Daemon) queue name parser, corrupting adjacent memory and crashing the affected service. The vendor description specifies a local authenticated attacker as the threat actor, yet IBM's own submitted CVSS vector (AV:N/AC:L/PR:N/UI:N) characterizes this as an unauthenticated network-reachable flaw - a direct contradiction that materially affects risk prioritization. …
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Attack ChainAIDerived
Hypothetical attack flow derived from CVE metadata
Vulnerability AssessmentAI
| Exploitation | Per the vendor description, exploitation requires both local access to the IBM i system and valid authentication credentials - the attacker must be an authenticated local user on the IBM i host. … Additional conditions and limiting factors are described in the full assessment. |
| Risk Assessment | The vendor-supplied CVSS 3.1 vector (AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L, score 5.3) is directly contradicted by the description, which explicitly states 'local authenticated attacker.' If the description is authoritative, the effective attack surface is substantially narrower than a CVSS Medium-network score implies - real-world exploitation requires both system access and valid credentials, not remote unauthenticated access. … 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-provided patch via the PTF (Program Temporary Fix) mechanism documented in the vendor advisory at https://www.ibm.com/support/pages/node/7285939. … Detailed patch versions, workarounds, and compensating controls in full report. |
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Same weakness CWE-787 – Out-of-bounds Write
View allSame technique Buffer Overflow
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External POC / Exploit Code
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