onyx

onyx --cves cve-2025-21171

CVE-2025-21171

HIGH.NET
score
<0.1
cvss
7.5
epss
1.7%
published
2025-01-14
kev added
—
first seen

.NET contains a remote code execution caused by insecure deserialization in its serialization component, letting remote attackers execute arbitrary code, exploit requires sending malicious serialized data.

Timeline

How this CVE moved toward exploitation. Chart: last 30 days — trend score, EPSS, community mentions per day; hover the event lane.

events2025-01-14 — PublishedP2026-10-21 — Tracked by OnyxTscore2026-10-21: score <0.1<0.1epss2026-09-22: epss 1.7%2026-09-23: epss 1.7%2026-09-24: epss 1.7%2026-09-25: epss 1.7%2026-09-26: epss 1.7%2026-09-27: epss 1.7%2026-09-29: epss 1.7%2026-09-30: epss 1.7%2026-10-01: epss 1.7%2026-10-02: epss 1.7%2026-10-03: epss 1.7%2026-10-04: epss 1.7%2026-10-05: epss 1.7%2026-10-06: epss 1.7%2026-10-07: epss 1.7%2026-10-08: epss 1.7%2026-10-09: epss 1.7%2026-10-10: epss 1.7%2026-10-11: epss 1.7%2026-10-12: epss 1.7%2026-10-13: epss 1.7%2026-10-14: epss 1.7%2026-10-15: epss 1.7%2026-10-16: epss 1.7%2026-10-18: epss 1.7%2026-10-19: epss 1.7%2026-10-20: epss 1.7%2026-10-21: epss 1.7%1.7%mentions/day0no mentions in 30 days2026-09-22today
  1. Published
  2. Tracked by Onyx

Weaknesses

CWE-122 NVD-CWE-noinfo

References 1