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Search Results (4 CVEs found)
| CVE | Vendors | Products | Updated | CVSS v3.1 |
|---|---|---|---|---|
| CVE-2026-20043 | 1 Cisco | 5 Cisco Open Source Snort3, Cisco Secure Firewall Threat Defense (ftd) Software, Cisco Utd Snort Ips Engine Software and 2 more | 2026-10-22 | 9 Critical |
| As part of Cisco's ongoing commitment to proactive security and product quality, the Cisco owned Open Source Snort 3 Software engineering team has conducted a comprehensive internal security review. This review resulted in software hardening releases that address multiple internally discovered vulnerabilities. The vulnerabilities tracked by CVE-2026-20043 are related to issues concerning out-of-bounds writes that are grouped under the Common Weakness Enumeration (CWE) Base CWE-787. | ||||
| CVE-2026-76489 | 1 Cisco | 3 Cisco Open Source Snort3, Cisco Secure Firewall Threat Defense (ftd) Software, Secure Firewall Threat Defense | 2026-10-22 | 5.8 Medium |
| Multiple Cisco products are affected by a vulnerability in the memory management implementation of Snort 3 that could allow an unauthenticated, remote attacker to cause the Snort 3 Detection Engine to restart, resulting in an interruption of packet inspection. This vulnerability is due to incomplete error checking when Snort 3 processes files, which could cause unreleased memory. An attacker could exploit this vulnerability by sending a large number of files to be processed. A successful exploit could allow the attacker to cause the Snort 3 Detection Engine to restart unexpectedly, resulting in a DoS condition. | ||||
| CVE-2026-20197 | 1 Cisco | 4 Cisco Open Source Snort3, Cisco Secure Firewall Threat Defense (ftd) Software, Cisco Utd Snort Ips Engine Software and 1 more | 2026-10-22 | 5.8 Medium |
| Multiple Cisco products are affected by a vulnerability in the Snort 3 Teredo Detection Engine that could allow an unauthenticated, remote attacker to cause the Snort 3 Detection Engine to restart, resulting in an interruption of packet inspection. This vulnerability is due to incomplete error checking when Snort 3 parses Teredo packets. An attacker could exploit this vulnerability by sending a crafted Teredo packet to a targeted device to be parsed by Snort. A successful exploit could allow the attacker to cause the Snort 3 Detection Engine to restart unexpectedly, resulting in a DoS condition. | ||||
| CVE-2026-20019 | 1 Cisco | 4 Cisco Open Source Snort3, Cisco Secure Firewall Threat Defense (ftd) Software, Cisco Utd Snort Ips Engine Software and 1 more | 2026-10-22 | 5.8 Medium |
| Multiple Cisco products are affected by a vulnerability in the Snort 3 NetFlow Detection Engine that could allow an unauthenticated, remote attacker to cause the Snort 3 Detection Engine to restart, resulting in an interruption of packet inspection. This vulnerability is due to incomplete error checking when Snort 3 parses UDP Netflow Protocol packets. An attacker could exploit this vulnerability by sending a single crafted Netflow packet through an established connection to be parsed by Snort 3. A successful exploit could allow the attacker to cause the Snort 3 Detection Engine to restart unexpectedly, resulting in a DoS condition. | ||||
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