CVE-2025-51677
A critical flaw in the openRISC OR1200 CPU design can cause unexpected behavior because the RTL and netlist outputs do not match. This mismatch can lead to information disclosure and system compromise. The vulnerability is present in the OR1200 commit 83ac6b.
No official fix yet. If none appears within 45 days of first tracking, this entry is removed automatically.
Who is affected
openRISC OR1200 CPU, commit 83ac6b, typically used in embedded systems and hardware developers.
Real-world impact
An attacker could read confidential data or take full control of the device, potentially compromising the entire system.
Why this severity
The CVSS score of 9.1 indicates that the flaw can be exploited remotely without any authentication, can reveal sensitive information, and can give an attacker complete control. The attack is straightforward and requires no special user interaction.
What to do about it
No official fix or mitigation is documented in the sources yet. Monitor the vendor advisory and apply the patch as soon as it is released.
No fix documented in sources
Timeline
- Jul 17, 2026 · 16d agoPublishedDisclosed and added to the National Vulnerability Database.
- Jul 23, 2026 · 10d agoAdvisory updatedThe NVD record was last revised.