CVE-2026-0455

Unauthorized Access to Inter‑Processor Interrupt Buffers in AMD Versal SoCs

Published Nov 12, 2026 CVSS 4.0 · 5.9 Medium EPSS n/a KEV · Not listed
Description
The Versal™ AI Edge Series Gen 2 Peripheral Protection Unit (XPPU) for the inter-processor interrupt (IPI) buffers does not block unauthorized access as expected. This allows processors in the SoC with any IPI channel access the ability to both read and write to the entire IPI buffer register space as well as the IPI no-buffer register control space.

Remediation

No solution or workaround provided in the CVE record

Tracking

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Advisories

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History
Type Values Removed Values Added
Title Unauthorized Access to Inter‑Processor Interrupt Buffers in AMD Versal SoCs
Type Values Removed Values Added
Description The Versal™ AI Edge Series Gen 2 Peripheral Protection Unit (XPPU) for the inter-processor interrupt (IPI) buffers does not block unauthorized access as expected. This allows processors in the SoC with any IPI channel access the ability to both read and write to the entire IPI buffer register space as well as the IPI no-buffer register control space.
Weaknesses CWE-1220
References
Metrics cvssV4_0

{'score': 5.9, 'vector': 'CVSS:4.0/AV:L/AC:L/AT:P/PR:L/UI:A/VC:L/VI:L/VA:H/SC:L/SI:L/SA:H'}

Subscriptions

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Weaknesses

Sources

Status
PUBLISHED
Assigner
AMD
Published
Updated
Nov 13, 2026, 12:15 AM
Reserved
Dec 6, 2025, 1:53 PM
Status
Awaiting Analysis
Published
Nov 12, 2026, 8:18 PM
Modified
Nov 13, 2026, 2:18 AM