$ cve CVE-2020-3580 JSON

CVE-2020-3580 KEV

6.1

MEDIUM · CVSS 3.1 · EPSS 85.6% (pctl 100)

Patch first

On CISA KEV — known exploited in the wild, due 2022-05-03.

Description

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 the web services interface of an affected device. An attacker could exploit these vulnerabilities by persuading a user of the interface to click a crafted link. A successful exploit could allow the attacker to execute arbitrary script code in the context of the interface or allow the attacker to access sensitive, browser-based information. Note: These vulnerabilities affect only specific AnyConnect and WebVPN configurations. For more information, see the Vulnerable Products section.

Scoring

CVSS	6.1 (MEDIUM, v3.1)
Vector	CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
EPSS	85.58% — more likely to be exploited than 100% of all CVEs
Weakness	CWE-79
On CISA KEV	yes — remediate by 2022-05-03
Public exploit	none known
Published	2020-10-21
Last modified	2026-08-11

CISA KEV

Name	Cisco ASA and FTD Cross-Site Scripting (XSS) Vulnerability
Added	2021-11-03
Due	2022-05-03
Vendor / product	Cisco / Adaptive Security Appliance (ASA) and Firepower Threat Defense (FTD)
Ransomware use	known

Affected (2)

Vendor	Product
cisco	adaptive security appliance software
cisco	secure firewall threat defense

References

→ the Explorer · watch your stack · NVD