CVE-2026-29648HIGH 8.8EPSS p23.4%

CVE-2026-29648CVE-2026-29648

Description

In OpenXiangShan NEMU, when Smstateen is enabled, clearing mstateen0.ENVCFG does not correctly restrict access to henvcfg and senvcfg. As a result, less-privileged code may read or write these CSRs without the required exception, potentially bypassing intended state-enable based isolation controls in virtualized or multi-privilege environments.

Scoring

CVSS 3.18.8 (HIGH)
VectorCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
EPSS0.32% probability of exploitation · percentile 23.4% · 2026-06-19T12:03:05Z
Published2026-04-20
Last modified2026-04-21

Underlying weaknesses· 1

CWE-269

References

  1. https://docs.riscv.org/reference/isa/priv/smstateen.html
  2. https://github.com/OpenXiangShan/NEMU/issues/690
  3. https://github.com/OpenXiangShan/XiangShan/pull/3978
  4. https://github.com/OpenXiangShan/NEMU/issues/690

1

TypeTargetConfidenceTier
WeaknessImproper Privilege Managementcwe-2690%live

Related by meaning· 6

Nearest entities by semantic similarity across the cs-graph corpus.

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Sourced from NVD + FIRST.org EPSS. Curated for EU compliance use cases by Adam Lundqvist, Founder at SQUR.