How severe is CVE-2019-18654?

CVE-2019-18654 has a CVSS 3.x base score of 6.1, rated medium severity. It is exploitable over network with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is low, integrity low, and availability none.

Is CVE-2019-18654 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (54th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2019-18654?

CVE-2019-18654 affects Avg Anti-virus. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2019-18654?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

When was CVE-2019-18654 published?

CVE-2019-18654 was published on 2019-11-01 and last updated on 2026-06-17.

CVE-2019-18654

CVE-2019-18654 is a medium-severity vulnerability in Avg Anti-virus with a CVSS 3.x base score of 6.1. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-79.

Key facts

Severity: Medium (CVSS 3.x base score 6.1)
CVSS v2: 4.3
EPSS exploit prediction: 1% (54th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-79
Affected product: Avg Anti-virus
Published: 2019-11-01
Last modified: 2026-06-17

Description

A Cross Site Scripting (XSS) issue exists in AVG AntiVirus (Internet Security Edition) 19.3.3084 build 19.3.4241.440 in the Network Notification Popup, allowing an attacker to execute JavaScript code via an SSID Name.

Frequently asked questions

What is CVE-2019-18654?: A Cross Site Scripting (XSS) issue exists in AVG AntiVirus (Internet Security Edition) 19.3.3084 build 19.3.4241.440 in the Network Notification Popup, allowing an attacker to execute JavaScript code via an SSID Name.
How severe is CVE-2019-18654?: CVE-2019-18654 has a CVSS 3.x base score of 6.1, rated medium severity. It is exploitable over network with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is low, integrity low, and availability none.
Is CVE-2019-18654 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (54th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2019-18654?: CVE-2019-18654 affects Avg Anti-virus. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2019-18654?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2019-18654 published?: CVE-2019-18654 was published on 2019-11-01 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:avg:anti-virus:19.3.3084:*:*:*:internet_security:*:*:*

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