CVE-2019-18653

Name: CVE-2019-18653
Creator: NVD / NIST
Published: 2019-11-01T19:15:11.29+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

MEDIUMCVSS 6.1/10EPSS 0.85%

Last modified Jun 17, 2026

CVE-2019-18653 is a medium-severity vulnerability rated 6.1/10 on the CVSS scale. A Cross Site Scripting (XSS) issue exists in Avast AntiVirus (Free, Internet Security, and Premiere Edition) 19.3.2369 build 19.3.4241.440 in the Network Notification Popup, allowing an attacker to execute JavaScript code via an SSID Name.. EPSS estimates a 0.85% chance of exploitation in the next 30 days.

Description

A Cross Site Scripting (XSS) issue exists in Avast AntiVirus (Free, Internet Security, and Premiere Edition) 19.3.2369 build 19.3.4241.440 in the Network Notification Popup, allowing an attacker to execute JavaScript code via an SSID Name.

Metrics

CVSS 3.1

6.1/10

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N

EPSS Probability

0.85%

53.6th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-79

Affected Software

Vendor	Product	Versions
Avast	Antivirus	19.3.2369

References

Timeline

Published: Nov 1, 2019
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2019-18653?

How severe is CVE-2019-18653?

CVE-2019-18653 has a CVSS score of 6.1/10 (MEDIUM severity). The EPSS model estimates a 0.85% probability of exploitation in the next 30 days.

How do I fix CVE-2019-18653?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2019-18653?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST