Information disclosure in Xiangshan
CVE-2025-63094
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.
Vulnerability class: Information Disclosure
Published · last modified .
CVSS v3 metric
CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N.
EPSS exploit prediction
EPSS: 0.006 (45.7th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 46th percentile — 45.7% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.006 · newest: 0.006 · change: +0.000
Affected products
- Xiangshan — versions 2.0, 3.0
Weakness classification (CWE)
References
- github.com/necst/aca25-xiangshan-spectre/blob/main/README.md (Exploit, Third Party Advisory)
- github.com/necst/aca25-xiangshan-spectre (Exploit, Third Party Advisory)
Frequently asked questions
- What is CVE-2025-63094?
- CVE-2025-63094 is a high-severity vulnerability in Xiangshan, classified under Information Disclosure. CVSS score: 7.5/10. Published 2025-12-10.
- How severe is CVE-2025-63094?
- High severity. CVSS v3 base score is 7.5 out of 10.