What’s Vulnerable › Vulnerabilities

CVE-2025-63384

• Severity: medium (CVSS 6.5 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.3% probability of exploitation in the next 30 days
• Public exploit or detection template: yes
• Published: 2025-11-10 · updated 2026-06-17
• Weakness: CWE-266

Description

A vulnerability was discovered in RISC-V Rocket-Chip v1.6 and before implementation where the SRET (Supervisor-mode Exception Return) instruction fails to correctly transition the processor's privilege level. Instead of downgrading from Machine-mode (M-mode) to Supervisor-mode (S-mode) as specified by the sstatus.SPP bit, the processor incorrectly remains in M-mode, leading to a critical privilege retention vulnerability.

Affected products

• Chipsalliance Rocketchip: through 1.6

References

• https://github.com/107040503/RISC-V-Vulnerability-Disclosure_SRET
• https://github.com/chipsalliance/rocket-chip.git

Get alerted when CVE-2025-63384 or the next vulnerability affects your stack