Threat Entry Updated 2026-01-08

CVE-2026-20026 - Cisco Secure Firewall Threat Defense (FTD) Software Plugin

Multiple Cisco products are affected by a vulnerability in the processing of DCE/RPC requests that could allow an unauthenticated, remote attacker to cause the Snort 3 Detection Engine to leak sensitive information or to restart, resulting in an interruption of packet inspection. This vulnerability is due to an error in buffer handling logic when processing DCE/RPC requests, which can result in a buffer use-after-free read. An attacker could exploit this vulnerability by sending a large number of DCE/RPC requests through an established connection that is inspected by Snort 3. A successful…

PLUGIN Cisco Secure Firewall Threat Defense (FTD) Software

CVE-2026-20026

MEDIUM CVSS 5.8 2026-01-07

Risk Score

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Threat Entry Updated 2026-01-08

CVE-2026-20027 - Cisco Secure Firewall Threat Defense (FTD) Software Plugin

Multiple Cisco products are affected by a vulnerability in the processing of DCE/RPC requests that could allow an unauthenticated, remote attacker to cause the Snort 3 Detection Engine to leak sensitive information or to restart, resulting in an interruption of packet inspection. This vulnerability is due to an error in buffer handling logic when processing DCE/RPC requests, which can result in a buffer out-of-bounds read. An attacker could exploit this vulnerability by sending a large number of DCE/RPC requests through an established connection that is inspected by Snort 3. A…

PLUGIN Cisco Secure Firewall Threat Defense (FTD) Software

CVE-2026-20027

MEDIUM CVSS 5.3 2026-01-07

Risk Score

Open Full Technical Breakdown