CVE-2026-29647

CVSS 6.5 MEDIUMEPSS 0.2%CWE-269

Vexday Risk Score

13Low

SSVC decision (CISA)

Track

No exploitation signal → monitor

CVSS 6.5EPSS 0.2%KEV nãoPoC —Nuclei —Metasploit —Patch —

Lifecycle

20 Apr 2026Published on NVD

Recommendation: Monitor — no exploitation signal at the moment.

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.

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

Affected products

n/a · n/a

References

https://docs.riscv.org/reference/isa/priv/smstateen.html#state-enable-0-registers https://github.com/OpenXiangShan/NEMU/issues/691 https://github.com/OpenXiangShan/XiangShan/pull/3978