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CVE-2026-29649

Quick assessment

Affected
n/a n/a
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

NEMU是XiangShan开源的一个用于教学的全系统模拟器。 NEMU存在安全漏洞，该漏洞源于RISC-V Hypervisor CSR处理存在实现缺陷，可能导致虚拟化配置执行错误，在虚拟化环境中执行缓存块管理指令时引发意外陷阱或拒绝服务。

AI Predicted 5.5 Difficulty: Hard EPSS 0.66% · P50
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I. Basic Information for CVE-2026-29649

Vulnerability Information
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Vulnerability Title
N/A
Source: CVE Program / CVE List V5
Vulnerability Description
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], so a machine-mode write to menvcfg can implicitly modify the hypervisor's environment configuration. This can lead to incorrect enforcement of virtualization configuration and may cause unexpected traps or denial of service when executing cache-block management instructions in virtualized contexts (V=1).
Source: CVE Program / CVE List V5
CVSS Information
N/A
Source: CVE Program / CVE List V5
Vulnerability Type
N/A
Source: CVE Program / CVE List V5
Vulnerability Title
NEMU 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
NEMU是XiangShan开源的一个用于教学的全系统模拟器。 NEMU存在安全漏洞，该漏洞源于RISC-V Hypervisor CSR处理存在实现缺陷，可能导致虚拟化配置执行错误，在虚拟化环境中执行缓存块管理指令时引发意外陷阱或拒绝服务。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
- n/a n/a -

II. Public POCs for CVE-2026-29649

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III. Intelligence Information for CVE-2026-29649

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Other References for CVE-2026-29649 (1)

Same Patch Batch · n/a · 2026-04-20 · 21 CVEs total

CVE-2026-6650 4.7 MEDIUM Z-BlogPHP ZBA File app_upload.php UnPack unrestricted upload
CVE-2026-6591 4.3 MEDIUM ComfyUI LoadImage Node folder_paths.py folder_paths.get_annotated_filepath path traversal
CVE-2026-6590 4.3 MEDIUM ComfyUI Model Preview Endpoint model_manager.py get_model_preview path traversal
CVE-2026-6589 4.3 MEDIUM ComfyUI server.py create_origin_only_middleware cross-site request forgery
CVE-2026-6593 3.5 LOW ComfyUI View Endpoint server.py cross site scripting
CVE-2026-6592 3.5 LOW ComfyUI userdata Endpoint user_manager.py getuserdata cross site scripting
CVE-2026-29646 NEMU 安全漏洞
CVE-2026-29643 XiangShan 安全漏洞
CVE-2026-29648 NEMU 安全漏洞
CVE-2026-29647 NEMU 安全漏洞
CVE-2026-30266 DeepCool DeepCreative 安全漏洞
CVE-2026-29642 XiangShan 安全漏洞
CVE-2026-29645 NEMU 安全漏洞
CVE-2026-39109 PHPGurukul Apartment Visitors Management System 安全漏洞
CVE-2026-39111 PHPGurukul Apartment Visitors Management System 安全漏洞
CVE-2026-39110 PHPGurukul Apartment Visitors Management System 安全漏洞
CVE-2026-39112 PHPGurukul Apartment Visitors Management System 安全漏洞
CVE-2026-26399 Arduino 安全漏洞
CVE-2025-66954 Buffalo LinkStation 安全漏洞
CVE-2026-30269 doorman 安全漏洞

IV. Related Vulnerabilities

Same product: n/a
Same vendor: n/a

V. Comments for CVE-2026-29649

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