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CVE-2026-29644

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.

XiangShan是中国XiangShan开源的一个开源高性能RISC-V处理器项目。 XiangShan存在安全漏洞，该漏洞源于分布式CSR写使能路径门控不当，可能导致本地攻击者篡改内存属性，进而造成权限提升、信息泄露或拒绝服务。

AI Predicted 8.5 Difficulty: Moderate EPSS 0.14% · P3
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I. Basic Information for CVE-2026-29644

Vulnerability Information
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Vulnerability Title
N/A
Source: CVE Program / CVE List V5
Vulnerability Description
XiangShan (open-source high-performance RISC-V processor) commit edb1dfaf7d290ae99724594507dc46c2c2125384 (2024-11-28) has improper gating of its distributed CSR write-enable path, allowing illegal CSR write attempts to alter custom PMA (Physical Memory Attribute) CSR state. Though the RISC-V privileged specification requires an illegal-instruction exception for non-existent/illegal CSR accesses, affected XiangShan versions may still propagate such writes to replicated PMA configuration state. Local attackers able to execute code on the core (privilege context depends on system integration) can exploit this to tamper with memory-attribute enforcement, potentially leading to privilege escalation, information disclosure, or denial of service depending on how PMA enforces platform security and isolation boundaries.
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
XiangShan 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
XiangShan是中国XiangShan开源的一个开源高性能RISC-V处理器项目。 XiangShan存在安全漏洞，该漏洞源于分布式CSR写使能路径门控不当，可能导致本地攻击者篡改内存属性，进而造成权限提升、信息泄露或拒绝服务。
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-2026-29644

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III. Intelligence Information for CVE-2026-29644

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Patches & Fixes for CVE-2026-29644 (1)

News Coverage for CVE-2026-29644 (1)

Same Patch Batch · n/a · 2026-04-21 · 11 CVEs total

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CVE-2026-37748 Visitor Management System 安全漏洞
CVE-2026-38834 Tenda W30E 安全漏洞
CVE-2026-38835 Tenda W30E 安全漏洞
CVE-2026-30452 Textpattern CMS 安全漏洞

IV. Related Vulnerabilities

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

V. Comments for CVE-2026-29644

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