What’s Vulnerable › Vulnerabilities

CVE-2026-29647

• Severity: medium (CVSS 6.5 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.2% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2026-04-20 · updated 2026-06-17
• Weakness: CWE-269

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.

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
• https://github.com/OpenXiangShan/NEMU/issues/691

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