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AEGLIX vulnerability intelligence

CVE-2020-3580

MEDIUM · CVSS 6.1 · Analyzed

Published: 2020-10-21 · Updated: 2026-08-11 · Source: NVD

Vulnerability overview

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.

Severity and scoring

CVSS score
6.1 · MEDIUM
CVSS version
3.1
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
Weaknesses
CWE-79

CVSS measures technical severity; it does not establish whether this vulnerability is being exploited in your environment.

Known exploitation and remediation

Listed in CISA’s Known Exploited Vulnerabilities catalog.

Affected product
Cisco · Adaptive Security Appliance (ASA) and Firepower Threat Defense (FTD)
Added to catalog
2021-11-03
Required action
Apply updates per vendor instructions.
CISA remediation due date
2022-05-03

CISA deadlines apply to the organizations covered by its directives. Confirm your own remediation requirements.

Verify affected versions and patch availability in the vendor advisory before making changes.

Affected products and versions

  • cpe:2.3:a:cisco:secure_firewall_threat_defense:*:*:*:*:*:*:*:*

    Before (exclusive): 6.4.0.12

  • cpe:2.3:a:cisco:secure_firewall_threat_defense:*:*:*:*:*:*:*:*

    From (inclusive): 6.5.0

    Before (exclusive): 6.6.4

  • cpe:2.3:a:cisco:secure_firewall_threat_defense:*:*:*:*:*:*:*:*

    From (inclusive): 6.7.0

    Before (exclusive): 6.7.0.2

  • cpe:2.3:o:cisco:adaptive_security_appliance_software:*:*:*:*:*:*:*:*

    Before (exclusive): 9.8.4.34

  • cpe:2.3:o:cisco:adaptive_security_appliance_software:*:*:*:*:*:*:*:*

    From (inclusive): 9.9

    Before (exclusive): 9.9.2.85

  • cpe:2.3:o:cisco:adaptive_security_appliance_software:*:*:*:*:*:*:*:*

    From (inclusive): 9.10

    Before (exclusive): 9.12.4.13

  • cpe:2.3:o:cisco:adaptive_security_appliance_software:*:*:*:*:*:*:*:*

    From (inclusive): 9.13

    Before (exclusive): 9.13.1.21

  • cpe:2.3:o:cisco:adaptive_security_appliance_software:*:*:*:*:*:*:*:*

    From (inclusive): 9.14

    Before (exclusive): 9.14.2.8

  • cpe:2.3:o:cisco:adaptive_security_appliance_software:*:*:*:*:*:*:*:*

    From (inclusive): 9.15

    Before (exclusive): 9.15.1.15

These are NVD CPE applicability entries. Some products depend on configuration conditions; consult the official record to confirm applicability.

Advisories and references

Explore official sources

Read the official NVD record ↗

Explore the CISA catalog ↗

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