CVE-2025-51678High· 7.5▾ Twilight

An issue was discovered in RISC-V PicoRV32 commit 87c89a

An issue was discovered in RISC-V PicoRV32 commit 87c89a. A mismatch in the PCPI INSN and memory address can lead to unexpected behavior.

▾ Twilight zone — High severity, or a signal on a lesser flaw

Depth score41/ 100 · Moderate

impact 41.3 · likelihood 0.1 · exploitation 0

Proof of concept

Need a working PoC? Pro members can cast a request and our team develops one — it lands right here.

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Published

Jul 17, 2026

Updated

Oct 13, 2026

CVSS

7.5

Vendor

—

Product

—

CWE

CWE-119, CWE-704

Depth score

41 · Moderate

EPSS

0.61% · p49

Platforms

—

Source

NVD

Vector

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

Exploit-prediction probability, daily snapshots since Oct 13.

0.6% → 0.6%

Disclosure to exploitation, from the record and what we observed since indexing it.

3 events · 88 days

Full technical detail▾

An issue was discovered in RISC-V PicoRV32 commit 87c89a. A mismatch in the PCPI INSN and memory address can lead to unexpected behavior.

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.

Connected by shared product, vendor, weakness, or advisory.

#nvd