BaseFortify

Publication date: 2025-12-10

Last updated on: 2025-12-18

Assigner: MITRE

Description

XiangShan Nanhu V2 and XiangShan Kunmighu V3 were discovered to use speculative execution and indirect branch prediction, allowing attackers to access sensitive information via side-channel analysis of the data cache.

CVSS Scores

EPSS Scores

Probability:
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Meta Information

Published

2025-12-10

Last Modified

2025-12-18

Generated

2026-07-06

AI Q&A

2025-12-10

EPSS Evaluated

2026-07-05

NVD

CVE-2025-63094

Affected Vendors & Products

Vendor	Product	Version / Range
necst	xiangshan	2
necst	xiangshan	3

Helpful Resources

Exploitability

CWE

KEV

CWE ID	Description
CWE-200	The product exposes sensitive information to an actor that is not explicitly authorized to have access to that information.
CWE-203	The product behaves differently or sends different responses under different circumstances in a way that is observable to an unauthorized actor, which exposes security-relevant information about the state of the product, such as whether a particular operation was successful or not.

Attack-Flow Graph

Executive Summary

This vulnerability exists in XiangShan Nanhu V2 and XiangShan Kunmighu V3 processors, which use speculative execution and indirect branch prediction. These features allow attackers to perform side-channel analysis on the data cache, potentially accessing sensitive information.

Impact Analysis

The vulnerability can allow attackers to access sensitive information by exploiting side-channel analysis of the data cache, potentially leading to unauthorized disclosure of confidential data.

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