Weakness (CWE)

CWE-244: Improper Clearing of Heap Memory Before Release

Variant Draft

The product uses realloc() to resize buffers that contain sensitive information.

Source: MITRE CWE-244

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High 8.6

CVE-2026-20349 Exploited Public exploit

Cisco Secure Firewall Adaptive Security Appliance and Secure Firewall Threat Defense Software Remote Access SSL VPN Denial of Service Vulnerability

A vulnerability in the Remote Access SSL VPN service for Cisco Secure Firewall Adaptive Security Appliance (ASA) Software and Cisco Secure Firewall Threat Defense (FTD) Software could allow an unauthenticated, remote attacker to cause the device to reload une…

Cisco Cisco Secure Firewall Threat Defense (FTD) Software Cisco Secure Firewall Adaptive Security Appliance (ASA) Software Network devices

Aug 11, 2026
KEV Aug 11, 2026