# CVE-2026-0455: CVE-2026-0455

Status: published. Published: 2026-11-12. Updated: 2026-11-12.

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 remediation reported in collected sources

## Affected products and versions

- AMD / Versal™ AI Edge Series Gen 2 Adaptive SoCs: 2026.1 (unaffected). Source: CNA: AMD
- AMD / Versal™ Prime Series Gen 2 Adaptive SoCs (2VM3358, 2VM3558, and 2VM3858 only): 2026.1 (unaffected). Source: CNA: AMD
- AMD / VivadoTM Advanced Configuration Editor for Versal™ AI Edge Series Gen 2: 2026.1 (unaffected). Source: CNA: AMD

## Severity and prioritization

- 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; source: CNA: AMD

- CISA KEV: No listing in collected sources

- EPSS: Not available

- SSVC: Not available

- Weaknesses: CWE-1220

## Exploit evidence

No exploit evidence in collected sources. This is not proof of no exploitation.

## References

- https://www.amd.com/en/resources/product-security/bulletin/AMD-SB-8027.html (CNA: AMD)

## Provenance

- CNA: AMD: https://www.cve.org/CVERecord?id=CVE-2026-0455; retrieved 2026-11-12; source updated 2026-11-12

Revision: 65394f2868a3fc1cd82f1d3899ed00f448107a012d7eeee064caca38d7fba08b

Canonical: https://y2.dev/cve/CVE-2026-0455

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