CVE-2025-63094
XiangShan Nanhu/XiangShan Kunmighu Speculative Execution Cache Side-Channel Vulnerability
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.
INFO
Published Date :
Dec. 10, 2025, 6:16 p.m.
Last Modified :
Jan. 2, 2026, 9:23 p.m.
Remotely Exploit :
Yes !
Source :
[email protected]
CVSS Scores
| Score | Version | Severity | Vector | Exploitability Score | Impact Score | Source |
|---|---|---|---|---|---|---|
| CVSS 3.1 | HIGH | 134c704f-9b21-4f2e-91b3-4a467353bcc0 |
Solution
- Apply microcode updates from the vendor.
- Disable speculative execution features if possible.
- Implement cache monitoring and analysis tools.
References to Advisories, Solutions, and Tools
Here, you will find a curated list of external links that provide in-depth
information, practical solutions, and valuable tools related to
CVE-2025-63094.
| URL | Resource |
|---|---|
| https://github.com/necst/aca25-xiangshan-spectre | Exploit Third Party Advisory |
| https://github.com/necst/aca25-xiangshan-spectre/blob/main/README.md | Exploit Third Party Advisory |
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2025-63094 is
associated with the following CWEs:
Common Attack Pattern Enumeration and Classification (CAPEC)
Common Attack Pattern Enumeration and Classification
(CAPEC)
stores attack patterns, which are descriptions of the common attributes and
approaches employed by adversaries to exploit the CVE-2025-63094
weaknesses.
We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2025-63094 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2025-63094 vulnerability over time.
Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.
-
Initial Analysis by [email protected]
Jan. 02, 2026
Action Type Old Value New Value Added CPE Configuration OR *cpe:2.3:a:xiangshan:xiangshan:2.0:*:*:*:*:*:*:* *cpe:2.3:a:xiangshan:xiangshan:3.0:*:*:*:*:*:*:* Added Reference Type MITRE: https://github.com/necst/aca25-xiangshan-spectre Types: Exploit, Third Party Advisory Added Reference Type MITRE: https://github.com/necst/aca25-xiangshan-spectre/blob/main/README.md Types: Exploit, Third Party Advisory -
CVE Modified by 134c704f-9b21-4f2e-91b3-4a467353bcc0
Dec. 18, 2025
Action Type Old Value New Value Added CVSS V3.1 AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N Added CWE CWE-200 Added CWE CWE-203 -
New CVE Received by [email protected]
Dec. 10, 2025
Action Type Old Value New Value Added 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. Added Reference https://github.com/necst/aca25-xiangshan-spectre Added Reference https://github.com/necst/aca25-xiangshan-spectre/blob/main/README.md