Known vulnerabilities in Defender Security – Malware Scanner, Login Security & Firewall

WordPress security plugin with malware scanner, IP blocking, audit logs, antivirus scans, firewall, 2FA, brute force login security, and more.

8Reported vulnerabilities

9.8Highest CVSS score

6.1.0Latest version

80,000+Active installs

What to do now

Update Defender Security – Malware Scanner, Login Security & Firewall to 6.2.0 or later. 8 of these have a fixed version available. Updating resolves them.

Plugin last updated: July 28, 2026 / Tested up to WordPress: 7.0.4 / View on wordpress.org

Reported vulnerabilities

Ordered by how urgently they need attention — whether a vulnerability is actually being exploited, and how likely exploitation is, rather than CVSS severity alone.

CVE	Severity	Exploit probability next 30 days	Affected versions	Fixed in	Published
CVE-2023-5089	Medium 5.3	2.2%	Before 4.1.0	`4.1.0`	October 16, 2023
CVE-2024-37444	Critical 9.8	0.5%	0 to 4.7.1 (inclusive) 0 to 4.7.1 (inclusive)	`4.7.3`	November 1, 2024
CVE-2021-4425	Medium 4.3	0.6%	2.4.6 and earlier	`2.4.6.1`	July 12, 2023
CVE-2022-44581	High 7.5	0.7%	3.3.2 and earlier	`3.3.3`	November 23, 2022
CVE-2026-19225	High 7.2	0.3%	Before 6.2.0	`6.2.0`	August 27, 2026
CVE-2024-25595	Medium 6.5	0.4%	4.4.1 and earlier	`4.4.2`	February 12, 2024
CVE-2023-51490	Medium 5.3	0.5%	4.1.0 and earlier	`4.2.0`	December 27, 2023
CVE-2023-47189	Medium 5.3	0.5%	4.2.0 and earlier	`4.2.1`	November 3, 2023

Sources: vulnerability records from NVD, exploitation from CISA KEV, exploit probability from EPSS. Affected versions come from CPE ranges or from the reporting CNA.