CVE-2022-20713

What it is

A vulnerability in the VPN web client services component of Cisco Adaptive Security Appliance (ASA) Software and Cisco Firepower Threat Defense (FTD) Software could allow an unauthenticated, remote attacker to conduct browser-based attacks against users of an affected device. This vulnerability is due to improper validation of input that is passed to the VPN web client services component before being returned to the browser that is in use. An attacker could exploit this vulnerability by persuading a user to visit a website that is designed to pass malicious requests to a device that is running Cisco ASA Software or Cisco FTD Software and has web services endpoints supporting VPN features enabled. A successful exploit could allow the attacker to reflect malicious input from the affected device to the browser that is in use and conduct browser-based attacks, including cross-site scripting attacks. The attacker could not directly impact the affected device.

At a glance

Exploitability

Can be exploited over the network without logging in, but needs a user to act. Limited direct impact.

Exploit odds

1.9% chance of exploitation in the next 30 days (EPSS).

Fix

A patch, advisory or fixed version is referenced. Upgrade or apply it.

Timeline

1. 2022-08-10 17:15 UTC PublishedDisclosed publicly on CVE.org and NVD
2. 2026-08-11 19:33 UTC Last updatedMost recent change to the record

Why it ranks here

• Exploited in the wild: no, CISA does not list it.
• Exploit odds: 1.9% in the next 30 days (EPSS).
• Severity: 4.3 MEDIUM (CVSS).
• Fix: a patch or advisory is linked.

Details

Published

2022-08-10 17:15 UTC

Last modified

2026-08-11 19:33 UTC

Exploit probability

1.9% · EPSS, next 30 days

Weakness

CWE-444

Record status

Modified

Affected

• Cisco Secure Firewall Threat Defense 6.2.3
• Cisco Secure Firewall Threat Defense 6.2.3.1
• Cisco Secure Firewall Threat Defense 6.2.3.2
• Cisco Secure Firewall Threat Defense 6.2.3.3
• Cisco Secure Firewall Threat Defense 6.2.3.4
• Cisco Secure Firewall Threat Defense 6.2.3.5
• Cisco Secure Firewall Threat Defense 6.2.3.6
• Cisco Secure Firewall Threat Defense 6.2.3.7

Attack profile CVSS 3.1 · 4.3

Attack vector

Network

Complexity

Low

Privileges needed

None

User interaction

Required

Scope

Unchanged

Confidentiality

None

Integrity

Low

Availability

None

Is it in your code?

Hand this to your coding agent. It searches your project for the affected products and checks versions. Nothing leaves your machine.

Read https://cve-list.com/agent/cve/CVE-2022-20713.md and follow it. Check whether this project is affected by CVE-2022-20713. Read only. Don't change anything and don't upload my code. Tell me yes, no or not sure, with the file as proof.

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