Xiangshan develops a processor design and simulation toolkit encompassing the NEMU emulator and the Xiangshan CPU architecture project, presenting a narrow but specialized attack surface in the computer architecture and simulation domain. Observed vulnerabilities cluster around information disclosure, input validation, buffer-size calculation, and protection-mechanism failures, reflecting the complexity of instruction-set simulation and hardware specification handling. Current severity, exploitation, and exposure counts are shown alongside this summary.
The number and severity of CVEs published that impact products developed by Xiangshan over time
Signals from CVEs in this vendor scope (3 CVEs).
3 CVEs · Highest risk first
| CVE | Published | CVSS | Risk | KEV | Exploit |
|---|---|---|---|---|---|
CVE-2026-29649CRITICAL NEMU contains an implementation flaw in its RISC-V Hypervisor CSR handling where henvcfg[7:4] (CBIE/CBCFE/CBZE-related fields) is incorrectly masked/updated based on menvcfg[7:4], | Apr 20, 2026 | 9.8 | 30 | NO | NO |
CVE-2026-29645HIGH NEMU (OpenXiangShan/NEMU) before v2025.12.r2 contains an improper instruction-validation flaw in its RISC-V Vector (RVV) decoder. The decoder does not correctly validate the funct3 | Apr 20, 2026 | 7.5 | 25 | NO | NO |
CVE-2025-63094HIGH XiangShan Nanhu V2 and XiangShan Kunmighu V3 were discovered to use speculative execution and indirect branch prediction, allowing attackers to access sensitive information via sid | Dec 10, 2025 | 7.5 | 25 | NO | NO |
Signals from CVEs in this vendor scope (3 CVEs).
An overview of all social media posts that mention a CVE ID that affects a product developed by Xiangshan.
Media articles that mention a CVE ID that affects a product developed by Xiangshan — matched by CVE ID, not by vendor name.