cve.bz

CVE-2026-0455 amd

5.9 mediumEPSS 0.1%

Medium (5.9) in amd. EPSS 0.1% estimated probability of exploitation activity in the next 30 days.

On this page
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.

Severity

CVSS 4.0

5.9 medium
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
EPSS
0.1% estimated probability of exploitation activity in the next 30 days; 3rd percentile. Scored 2026-11-13. A forecast for this CVE across the internet, not for your own systems.
CISA's assessment (SSVC)
Exploitation: none · Automatable: no · Technical impact: partial, assessed 2026-11-13. From CISA's Vulnrichment in the CVE List: whether it is exploited, whether exploiting it can be automated, and how much control it gives.
CWE
CWE-1220 Insufficient Granularity of Access Control
Published
Modified
Assigned by
AMD (CNA)
NVD analysis
Awaiting analysis
Record from
the NVD, synced

Ask an AI about this CVE

ChatGPTClaudeGoogle AI Mode

Show the promptExplain CVE-2026-0455 for an engineer deciding whether to act. Use https://cve.bz/api/public/cves/CVE-2026-0455?via=ask-ai-copy and https://cve.bz/cve/CVE-2026-0455?via=ask-ai-copy as the source of truth: what is affected and which versions fix it, whether it is in CISA KEV, public exploits, and its EPSS (an internet-wide 30-day estimate of exploitation activity, not a forecast for my systems). If they give no fixed versions, use the CVE record https://cveawg.mitre.org/api/cve/CVE-2026-0455 or the vendor advisory, not third-party mirrors. Tell me how to check whether I am affected and how to verify a fix. Cite the sources and say where they are uncertain.

Opens a third-party assistant; its answer is its own, not cve.bz's. The prompt holds only this CVE's id and public links.

Badge for a README or a site

CVE-2026-0455

An image that stays current: it is drawn from the data each time it is fetched (a host that proxies images, as GitHub does, may show its copy for a while). Markdown:

[![CVE-2026-0455](https://cve.bz/cve/badge/CVE-2026-0455.svg)](https://cve.bz/cve/CVE-2026-0455)

HTML:

<a href="https://cve.bz/cve/CVE-2026-0455"><img src="https://cve.bz/cve/badge/CVE-2026-0455.svg" alt="CVE-2026-0455"></a>

Affected

  • amd:versal™ ai edge series gen 2 adaptive socs
  • amd:versal™ prime series gen 2 adaptive socs (2vm3358, 2vm3558, and 2vm3858 only)
  • amd:vivadotm advanced configuration editor for versal™ ai edge series gen 2

Attack patterns (CAPEC)

  • CAPEC-1 Accessing Functionality Not Properly Constrained by ACLs Likelihood: High · Severity: High
  • CAPEC-180 Exploiting Incorrectly Configured Access Control Security Levels Likelihood: High · Severity: Medium

The attack patterns MITRE's CAPEC relates to this record's weaknesses, as MITRE names them. Credits.

References

Check your stackJSON