UpHeron
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Servers and applications

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 (XSS) attacks against a user of the web services interface of an affected device. The vulnerabilities are due to insufficient validation of user-supplied input…

Actively exploited: CISA added it to its Known Exploited Vulnerabilities catalog on 3 Nov 2021.

Severity
Medium 6.1
Published
21 Oct 2020
Last changed
11 Aug 2026
Added to UpHeron
1 Nov 2026
Fixed in
9.8.4.34, 9.9.2.85, 9.12.4.13, 9.13.1.21, 9.14.2.8, 9.15.1.15
Sources
NVD

Affected software

SoftwareAffected versions
Cisco ASA and Firepower Threat DefenseServers and applications · cpe:o:cisco:adaptive_security_appliance_software
  • Every version before 9.8.4.34
  • From 9.9 before 9.9.2.85
  • From 9.10 before 9.12.4.13
  • From 9.13 before 9.13.1.21
  • From 9.14 before 9.14.2.8
  • From 9.15 before 9.15.1.15

Known exploited

CISA name
Cisco ASA and FTD Cross-Site Scripting (XSS) Vulnerability
Required action
Apply updates per vendor instructions.
Due for US agencies
3 May 2022
Used in ransomware
Yes, known

References

  • NVD https://nvd.nist.gov/vuln/detail/CVE-2020-3580
  • CVE.org https://www.cve.org/CVERecord?id=CVE-2020-3580