onyx

onyx --cves cve-2020-3580

CVE-2020-3580

N/AKEVNUCLEI ↗Cisco ASA
score
<0.1
cvss
—
epss
85.6%
published
—
kev added
2021-11-03
first seen

Cisco Adaptive Security Appliance (ASA) and Firepower Threat Defense (FTD) contain an insufficient input validation vulnerability for user-supplied input by the web services interface. Successful exploitation could allow an attacker to perform cross-site scripting (XSS) in the context of the interface or access sensitive browser-based information.

Timeline

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

events2021-11-03 — Added to CISA KEVK2026-10-21 (seen by) — Tracked by OnyxT2026-10-21 (seen by) — Nuclei template: Cisco ASA/FTD Software - Cross-Site ScriptingNscore2026-10-21: score <0.1<0.1epss2026-09-22: epss 85.6%2026-09-23: epss 85.6%2026-09-24: epss 85.6%2026-09-25: epss 85.6%2026-09-26: epss 85.6%2026-09-27: epss 85.6%2026-09-28: epss 85.6%2026-09-29: epss 85.6%2026-09-30: epss 85.6%2026-10-01: epss 85.6%2026-10-02: epss 85.6%2026-10-03: epss 85.6%2026-10-04: epss 85.6%2026-10-05: epss 85.6%2026-10-06: epss 85.6%2026-10-07: epss 85.6%2026-10-08: epss 85.6%2026-10-09: epss 85.6%2026-10-10: epss 85.6%2026-10-11: epss 85.6%2026-10-12: epss 85.6%2026-10-13: epss 85.6%2026-10-14: epss 85.6%2026-10-15: epss 85.6%2026-10-16: epss 85.6%2026-10-18: epss 85.6%2026-10-19: epss 85.6%2026-10-20: epss 85.6%2026-10-21: epss 85.6%85.6%mentions/day0no mentions in 30 days2026-09-22today
  1. Added to CISA KEV
  2. Tracked by Onyx
  3. Nuclei template Cisco ASA/FTD Software - Cross-Site Scripting

Nuclei template

A verified check exists — you can scan for this today, and so can everyone else.

template
Cisco ASA/FTD Software - Cross-Site Scripting
severity
MED
first seen
nuclei -id CVE-2020-3580 -u https://target.example

Weaknesses

CWE-79

References 1