What EVULNABLE says
Listed in the CISA KEV catalog, and Confirmed exploitation in the wild.
Patch This Cycle
CVE-2025-20393
Cisco — Cisco Multiple Products Improper Input Validation Vulnerability
CISA KEV · in the CISA KEV catalog since 2025-12-17
The priority band answers “how soon”, not “how bad” — see Methodology for what it weighs and where it abstains.
The evidence behind it
| Measure | Value | Source |
|---|---|---|
| CVSS base score | 10.0 | NVD |
| FIRST EPSS | 0.299 (98.1st pctl) | FIRST |
| Actively exploited | Confirmed | CISA KEV |
| Ransomware campaign use | Unknown or none | CISA KEV |
| CISA remediation deadline | 2025-12-24 — Overdue by 8 months | CISA KEV |
What CISA says to do
- Please adhere to Cisco's guidelines to assess exposure and mitigate risks. Check for signs of potential compromise on all internet accessible Cisco products affected by this vulnerability. Apply any final mitigations provided by the vendor as soon as they become available. For more information please see ↗
- nvd.nist.gov/…/CVE-2025-20393 ↗
The primary records
This page is an opinion about urgency. Where it and a source of record disagree, the source of record is the record.
Where this sits
CVE-2025-20393 is one of the entries ranked on the priority feed and in the non-Microsoft advisories.