CU
Product
Cisco UTD SNORT IPS Engine Software
by Cisco · last CVE Oct 21, 2026
20
CVEs
0
On KEV
9.0
Max CVSS
11
New 30D
Severity mix
Critical 1High 3Medium 16Low 0
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CVECVSSEPSSPublishedSummary · affected versions
CVE-2026-20221
New
5.8
1%
Oct 21
Multiple Cisco Products Snort 3 Generic Routing Encapsulation Denial of Service Vulnerabilities
Affected: 3.17.1S; 16.12.3; Fuji-16.9.5; 16.12.4; 17.3.1a; 16.6.6; +34 more
CVE-2026-20197
New
5.8
0%
Oct 21
Multiple Cisco Products Snort 3 Teredo Protocol Denial of Service Vulnerability
Affected: 17.12.1a; 17.12.2; 17.13.1a; 17.12.3; 17.14.1a; 17.12.4; +32 more
CVE-2026-20218
New
5.8
1%
Oct 21
Cisco Secure Firewall Threat Defense Snort 3 Visual Basic for Applications Buffer Overflow Denial of Service Vulnerability
Affected: 17.12.1a; 17.12.2; 17.13.1a; 17.12.3; 17.14.1a; 17.12.4; +32 more
CVE-2026-20179
New
5.8
0%
Oct 21
Multiple Cisco Products Snort 3 Generic Routing Encapsulation Denial of Service Vulnerabilities
Affected: 17.12.1a; 17.12.2; 17.13.1a; 17.12.3; 17.14.1a; 17.12.4; +32 more
CVE-2026-20019
New
5.8
1%
Oct 21
Multiple Cisco Products Snort 3 Netflow Denial of Service Vulnerabilities
Affected: 17.12.1a; 17.12.2; 17.13.1a; 17.12.3; 17.14.1a; 17.12.4; +32 more
CVE-2026-20011
New
5.8
1%
Oct 21
Multiple Cisco Products Snort 3 SMTP MIME Denial of Service Vulnerability
Affected: 3.17.1S; 16.12.3; Fuji-16.9.5; 16.12.4; 17.3.1a; 16.6.6; +34 more
CVE-2026-20068
5.8
0%
Mar 4
Multiple Cisco Products Snort 3 TBD Denial of Service Vulnerability
Affected: 17.3.1a; 17.2.1r; 17.3.2; 17.4.1a; 17.5.1; 17.3.3; +34 more
CVE-2026-20067
5.8
0%
Mar 4
Multiple Cisco Products Snort 3 TBD Denial of Service Vulnerability
Affected: 17.3.1a; 17.2.1r; 17.3.2; 17.4.1a; 17.5.1; 17.3.3; +34 more
CVE-2026-20066
5.8
0%
Mar 4
Multiple Cisco Products Snort 3 TBD Denial of Service Vulnerability
Affected: 17.3.1a; 17.2.1r; 17.3.2; 17.4.1a; 17.5.1; 17.3.3; +34 more
CVE-2026-20065
5.8
0%
Mar 4
Multiple Cisco Products Snort 3 TBD Denial of Service Vulnerability
Affected: 17.3.1a; 17.2.1r; 17.3.2; 17.4.1a; 17.5.1; 17.3.3; +34 more
CVE-2026-20058
5.8
0%
Mar 4
Cisco Secure Firewall Threat Defense Software Snort 3 Visual Basic for Application Denial of Service Vulnerability
Affected: 17.9.3a; 17.12.1a; 17.12.2; 17.13.1a; 17.9.5a; 17.12.3; +24 more
CVE-2026-20057
5.8
0%
Mar 4
Cisco Secure Firewall Threat Defense Software Snort 3 Visual Basic for Application Denial of Service Vulnerability
Affected: 17.12.1a; 17.12.2; 17.13.1a; 17.12.3; 17.14.1a; 17.12.4; +21 more
CVE-2026-20054
5.8
0%
Mar 4
Cisco Secure Firewall Threat Defense Software Snort 3 Visual Basic for Application Infinite Loop Denial of Service Vulnerability
Affected: 3.17.1S; 16.12.3; Fuji-16.9.5; 16.12.4; 17.3.1a; 16.6.6; +34 more
CVE-2026-20053
5.8
0%
Mar 4
Cisco Secure Firewall Threat Defense Software Snort 3 Visual Basic for Application Heap Overflow Denial of Service Vulnerability
Affected: 17.12.1a; 17.9.4; 17.12.2; 17.13.1a; 17.12.3; 17.14.1a; +23 more
CVE-2026-20005
5.8
1%
Mar 4
Multiple Cisco products are affected by a vulnerability in the Snort 3 Detection Engine that could allow an unauthenticated, remote attacker to cause the Snort 3 Detection Engine…
Affected: 17.2.1r; 17.3.1a; 17.3.2; 17.3.3; 17.3.4a; 17.3.6; +34 more
CVE-2026-76445
New
5.3
1%
Oct 21
Multiple Cisco Products Snort 3 Denial of Service Vulnerability
Affected: 17.12.1a; 17.12.2; 17.12.3; 17.12.4; 17.12.3a; 17.15.1a; +26 more
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