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Vulnerability record · CVE-2025-51677 · published 17 July 2026

CVE-2025-51677: An issue was discovered in openRISC OR1200 commit 83ac6b.

An issue was discovered in openRISC OR1200 commit 83ac6b. An output mismatch between the RTL and the netlist of the or1200 cpu output port can lead to unexpected behavior.

9.1 CVSS 3.1 Critical EPSS 0.63% · top 52.1% CWE-116 · CWE-116 Deferred
9.1CVSS 3.1 base score
0.63%EPSS exploitation probability, 30 days
NoNot in CISA KEV
0Affected product versions listed by NVD
3References
23 Jul 2026Last modified by NVD

Description

An issue was discovered in openRISC OR1200 commit 83ac6b. An output mismatch between the RTL and the netlist of the or1200 cpu output port can lead to unexpected behavior.

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

References

LinkTags
https://github.com/openrisc/mor1kx/issues/160#issuecomment-2585618940
https://mason.gmu.edu/~rsaravan/projects/synfuzz/cve/cve.html
https://www.arxiv.org/abs/2504.18812

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Source: NIST National Vulnerability Database (record CVE-2025-51677), CISA KEV, FIRST EPSS (scores of 2026-09-27). This page is refreshed as NVD updates the record.