SARA / Free Tools / CVE / CVE-2020-3580

CVE-2020-3580 — Cisco ASA and FTD Cross-Site Scripting (XSS) Vulnerability

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 ser

CVSS
6.1 MEDIUM
EPSS
92.62% (top 0.30%)
CWE
CWE-79
Published
2020-10-21T18:40:26.821Z
Last modified
2025-10-21T23:35:34.486Z
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
CISA KEV — Actively Exploited
Added to KEV
2021-11-03
BOD 22-01 due
2022-05-03
Ransomware use
Known

01What is this vulnerability?

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 by…

02Affected products

VendorProductVersions
CiscoCisco Adaptive Security Appliance (ASA) Softwaren/a

03Active exploitation status

Yes — actively exploited. Added to the CISA KEV catalog on 2021-11-03. Ransomware use: Known.

04Recommended remediation

05Technical details

For the full vendor write-up, exploit chains, and reference implementations, see the references list in section 09.

06Detection signatures

Open the Sigma generator with a pre-filled prompt for this CVE to draft a starting detection in your stack of choice:

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07Related CVEs

No directly-cited follow-up CVEs in the KB record for this advisory. The references list in section 09 carries the vendor cross-references.

08Timeline

09References

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