CVE-2026-29648
High
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.
SeverityHigh
CVSS8.8
Exploit probability—
Product
NEMU
PublishedApr 20, 2026
First seenApr 20, 2026
Weakness typeCWE-269Improper privilege management
How to fix
Sources list no fixed version or patch link for this vulnerability.
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| OpenXiangShan NEMU | No range specified | — |
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