What is CVE-2025-51677?

CVE-2025-51677 is a critical-severity vulnerability in N/a, classified under Improper Encoding or Escaping of Output. CVSS score: 9.1/10. Published 2026-07-17.

How severe is CVE-2025-51677?

Critical severity. CVSS v3 base score is 9.1 out of 10.

Vulnerability in N/a

CVE-2025-51677

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.

Published 2026-07-17 · last modified 2026-10-13.

CVSS v3 metric

CVSS v3 base score 9.1 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:H.

EPSS exploit prediction

EPSS: 0.006 (48.9th percentile), scored 2026-10-16.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 49th percentile — 48.9% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.006 · newest: 0.006 · change: 0.000

Weakness classification (CWE)

CWE-116 — Improper Encoding or Escaping of Output

References

Frequently asked questions

What is CVE-2025-51677?: CVE-2025-51677 is a critical-severity vulnerability in N/a, classified under Improper Encoding or Escaping of Output. CVSS score: 9.1/10. Published 2026-07-17.
How severe is CVE-2025-51677?: Critical severity. CVSS v3 base score is 9.1 out of 10.