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CVE-2025-63094

• Severity: high (CVSS 7.5 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.6% probability of exploitation in the next 30 days
• Public exploit or detection template: yes
• Published: 2025-12-10 · updated 2026-06-17
• Weakness: CWE-200

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.

Affected products

• Xiangshan: 2.0, 3.0

References

• https://github.com/necst/aca25-xiangshan-spectre
• https://github.com/necst/aca25-xiangshan-spectre/blob/main/README.md

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