What is CVE-2020-3580?

CVE-2020-3580 is a medium-severity vulnerability in Cisco Adaptive Security Appliance (Asa) Software, classified under Cross-site Scripting. CVSS score: 6.1/10. Published 2020-10-21.

How severe is CVE-2020-3580?

Medium severity. CVSS v3 base score is 6.1 out of 10.

Is CVE-2020-3580 known to be exploited?

Yes. CVE-2020-3580 is listed in the CISA Known Exploited Vulnerabilities catalog (added 2021-11-03), indicating it is being actively exploited. 21 public proof-of-concept repositories are indexed.

XSS in Cisco Adaptive Security Appliance (Asa) Software

CVE-2020-3580

Multiple vulnerabilities in the web services interface of Cisco Adaptive Security Appliance (ASA) Software and Cisco Firepower Threat Defense (FTD) Software could allow an unauthenticated, remote attacker to conduct cross-site scripting (X…

Vulnerability class: XSS (Cross-Site Scripting)

EPSS: 0.933 (99.8th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 6.1 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N.

Affected products

Cisco Adaptive Security Appliance (Asa) Software — versions n/a

Weakness classification (CWE)

CWE-79 — Cross-site Scripting

CISA KEV (Known Exploited Vulnerabilities)

This CVE is on the CISA KEV catalog, added on 2021-11-03. CISA KEV inclusion means CISA has confirmed in-the-wild exploitation; US federal agencies are required to remediate within a published due date.

BOD 22-01 due date: 2022-05-03.

Required action: Apply updates per vendor instructions.

Known ransomware campaign use: yes.

Public proof-of-concept exploits

References

20201021 Cisco Adaptive Security Appliance Software and Firepower Threat Defense Software Web Services Interface Cross-Site Scripting Vulnerabilities (vendor-advisory, x_refsource_CISCO)

Frequently asked questions

What is CVE-2020-3580?: CVE-2020-3580 is a medium-severity vulnerability in Cisco Adaptive Security Appliance (Asa) Software, classified under Cross-site Scripting. CVSS score: 6.1/10. Published 2020-10-21.
How severe is CVE-2020-3580?: Medium severity. CVSS v3 base score is 6.1 out of 10.
Is CVE-2020-3580 known to be exploited?: Yes. CVE-2020-3580 is listed in the CISA Known Exploited Vulnerabilities catalog (added 2021-11-03), indicating it is being actively exploited. 21 public proof-of-concept repositories are indexed.