{"id":"CVE-2026-20027","state":"PUBLISHED","title":"Cisco Snort DCERPC Stub Data Out of Bounds Read","description":"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.\r\n\r\nThis 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 successful exploit could allow the attacker to obtain sensitive information in the Snort 3 data stream.","publishedAt":"2026-01-07T16:23:43.301Z","updatedAt":"2026-02-12T18:48:32.446Z","severity":{"score":5.3,"label":"Medium","version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N","source":"cisco"},"assigner":"cisco","products":["Cisco Cisco Secure Firewall Threat Defense (FTD) Software","Cisco Cisco UTD SNORT IPS Engine Software"],"affected":[{"vendor":"Cisco","product":"Cisco Secure Firewall Threat Defense (FTD) 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A successful exploit could allow the attacker to obtain sensitive information in the Snort 3 data stream."}],"affected":[{"vendor":"Cisco","product":"Cisco Secure Firewall Threat Defense (FTD) 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