← Back to CVEs

CVE-2026-29647

MEDIUM

6.5

Description

In OpenXiangShan NEMU, insufficient Smstateen permission enforcement allows lower-privileged code to access IMSIC state via stopei/vstopei CSRs even when mstateen0.IMSIC is cleared, potentially enabling cross-context information leakage or disruption of interrupt handling.

CVE Details

CVSS v3.1 Score6.5

SeverityMEDIUM

CVSS VectorCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N

Attack VectorNETWORK

ComplexityLOW

Privileges RequiredLOW

User InteractionNONE

Published4/20/2026

Last Modified4/21/2026

Sourcenvd

Honeypot Sightings0

Weaknesses (CWE)

CWE-269

References

https://docs.riscv.org/reference/isa/priv/smstateen.html#state-enable-0-registers(cve@mitre.org)

https://github.com/OpenXiangShan/NEMU/issues/691(cve@mitre.org)

https://github.com/OpenXiangShan/XiangShan/pull/3978(cve@mitre.org)

https://github.com/OpenXiangShan/NEMU/issues/691(134c704f-9b21-4f2e-91b3-4a467353bcc0)

IOC Correlations

No correlations recorded

This product uses data from the NVD API but is not endorsed or certified by the NVD.