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Vulnerabilities of Cisco Cisco Open Source Snort3

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CVE Summary Score Published
CVE-2026-76524 A vulnerability in the control channel socket implementation of Open Source Snort 3 could allow an authenticated,… 7.8 High Oct 21, 2026
CVE-2026-76489 Multiple Cisco products are affected by a vulnerability in the memory management implementation of Snort 3 that could… 5.8 Medium Oct 21, 2026
CVE-2026-76445 Multiple Cisco products are affected by a vulnerability in the Snort 3 Detection Engine that could allow an… 5.3 Medium Oct 21, 2026
CVE-2026-20356 As part of Cisco's ongoing commitment to proactive security and product quality, the Cisco owned Open Source Snort 3… 7.5 High Oct 21, 2026
CVE-2026-20236 As part of Cisco's ongoing commitment to proactive security and product quality, the Cisco owned Open Source Snort 3… 7.5 High Oct 21, 2026
CVE-2026-20221 Multiple Cisco products are affected by a vulnerability in the generic routing encapsulation (GRE) tunnel… 5.8 Medium Oct 21, 2026
CVE-2026-20291 As part of Cisco's ongoing commitment to proactive security and product quality, the Cisco owned Open Source Snort 3… 7.8 High Oct 21, 2026
CVE-2026-20197 Multiple Cisco products are affected by a vulnerability in the Snort 3 Teredo Detection Engine that could allow an… 5.8 Medium Oct 21, 2026
CVE-2026-20218 A vulnerability in the Snort 3 Visual Basic for Applications (VBA) Decompression Engine of multiple Cisco products could… 5.8 Medium Oct 21, 2026
CVE-2026-20043 As part of Cisco's ongoing commitment to proactive security and product quality, the Cisco owned Open Source Snort 3… 9.0 Critical Oct 21, 2026
CVE-2026-20179 Multiple Cisco products are affected by a vulnerability in the Snort 3 Generic Routing Encapsulation (GRE) Detection… 5.8 Medium Oct 21, 2026
CVE-2026-20019 Multiple Cisco products are affected by a vulnerability in the Snort 3 NetFlow Detection Engine that could allow an… 5.8 Medium Oct 21, 2026
CVE-2026-20011 Multiple Cisco products are affected by a vulnerability in the Snort 3 SMTP MIME Decoder that could allow an… 5.8 Medium Oct 21, 2026

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