How to fix CVE-2025-63384?

Within 7 days: Identify affected systems running RISC-V Rocket-Chip and apply vendor patches promptly. Monitor vendor channels for patch availability.

Is Rocketchip affected by CVE-2025-63384?

Organizations using RISC-V Rocket-Chip should be aware of notable risk from CVE-2025-63384 rated CVSS 6.5. Exploitation could compromise the security of affected deployments. Proof-of-concept code is publicly available.

CVE-2025-63384

MEDIUM

2025-11-10 [email protected]

Information Disclosure Rocketchip

6.5

CVSS 3.1

CVSS VectorNVD

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N

Attack Vector

Network

Attack Complexity

Low

Privileges Required

Low

User Interaction

None

Scope

Unchanged

Confidentiality

High

Integrity

None

Availability

None

Lifecycle Timeline

Analysis Generated

Mar 28, 2026 - 19:21 vuln.today

PoC Detected

Feb 05, 2026 - 15:25 vuln.today

Public exploit code

CVE Published

Nov 10, 2025 - 20:15 nvd

MEDIUM 6.5

DescriptionNVD

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.

AnalysisAI

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. Rated medium severity (CVSS 6.5), this vulnerability is remotely exploitable, low attack complexity. Public exploit code available and no vendor patch available.

Technical ContextAI

This vulnerability is classified under CWE-266. 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 include: Chipsalliance Rocketchip.

RemediationAI

No vendor patch is available at time of analysis. Monitor vendor advisories for updates. Apply vendor patches when available. Implement network segmentation and monitoring as interim mitigations.

CVE-2025-63384 vulnerability details – vuln.today

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CVE-2025-63384

CVSS VectorNVD

Lifecycle Timeline

DescriptionNVD

AnalysisAI

Technical ContextAI

RemediationAI

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External POC / Exploit Code