A critical vulnerability in SonicWall VPN appliances that was believed to have been patched last year has been now found to be “botched,” with the company leaving a memory leak flaw unaddressed, until now, that could permit a remote attacker to gain access to sensitive information.
The shortcoming was rectified in an update rolled out to SonicOS on June 22. 
Tracked as CVE-2021-20019 (CVSS score

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