5.8

CVE-2026-20067

EPSS 0.48%
Veröffentlicht 04.03.2026 17:49:02
Zuletzt bearbeitet 19.08.2026 20:27:28
Erkennungen
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Multiple Cisco Products Snort 3 TBD Denial of Service Vulnerability

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 to restart, resulting in an interruption of packet inspection. 

This vulnerability is due to incomplete error checking when parsing the Multicast DNS fields of the HTTP header. An attacker could exploit this vulnerability by sending crafted HTTP packets through an established connection to be parsed by Snort 3. A successful exploit could allow the attacker to cause a DoS condition when the Snort 3 Detection Engine unexpectedly restarts.

Betroffene Produkte Warnungen 0 Metriken 2 CWE 1 Referenzen 4

NVD 182 VulnDex Vulnerability Enrichment 1

Daten sind bereitgestellt durch National Vulnerability Database (NVD)

Cisco ≫ Snort Version >= 3.0.0-233 < 3.9.5.0

Cisco ≫ Cyber Vision Version 3.0.0

Cisco ≫ Cyber Vision Version 3.0.1

Cisco ≫ Cyber Vision Version 3.0.2

Cisco ≫ Cyber Vision Version 3.0.3

Cisco ≫ Cyber Vision Version 3.0.4

Cisco ≫ Cyber Vision Version 3.0.5

Cisco ≫ Cyber Vision Version 3.0.6

Cisco ≫ Cyber Vision Version 3.1.0

Cisco ≫ Cyber Vision Version 3.1.1

Cisco ≫ Cyber Vision Version 3.1.2

Cisco ≫ Cyber Vision Version 3.2.0

Cisco ≫ Cyber Vision Version 3.2.1

Cisco ≫ Cyber Vision Version 3.2.2

Cisco ≫ Cyber Vision Version 3.2.3

Cisco ≫ Cyber Vision Version 3.2.4

Cisco ≫ Cyber Vision Version 4.0.0

Cisco ≫ Cyber Vision Version 4.0.1

Cisco ≫ Cyber Vision Version 4.0.2

Cisco ≫ Cyber Vision Version 4.0.3

Cisco ≫ Cyber Vision Version 4.1.0

Cisco ≫ Cyber Vision Version 4.1.1

Cisco ≫ Cyber Vision Version 4.1.2

Cisco ≫ Cyber Vision Version 4.1.3

Cisco ≫ Cyber Vision Version 4.1.4

Cisco ≫ Cyber Vision Version 4.1.5

Cisco ≫ Cyber Vision Version 4.1.6

Cisco ≫ Cyber Vision Version 4.1.7

Cisco ≫ Cyber Vision Version 4.2.0

Cisco ≫ Cyber Vision Version 4.2.1

Cisco ≫ Cyber Vision Version 4.2.2

Cisco ≫ Cyber Vision Version 4.2.3

Cisco ≫ Cyber Vision Version 4.2.4

Cisco ≫ Cyber Vision Version 4.2.6

Cisco ≫ Cyber Vision Version 4.3.0

Cisco ≫ Cyber Vision Version 4.3.1

Cisco ≫ Cyber Vision Version 4.3.2

Cisco ≫ Cyber Vision Version 4.3.3

Cisco ≫ Cyber Vision Version 4.4.0

Cisco ≫ Cyber Vision Version 4.4.1

Cisco ≫ Cyber Vision Version 4.4.2

Cisco ≫ Cyber Vision Version 4.4.3

Cisco ≫ Cyber Vision Version 5.0.0

Cisco ≫ Cyber Vision Version 5.0.1

Cisco ≫ Cyber Vision Version 5.0.2

Cisco ≫ Cyber Vision Version 5.1.0

Cisco ≫ Cyber Vision Version 5.1.1

Cisco ≫ Cyber Vision Version 5.1.2

Cisco ≫ Cyber Vision Version 5.1.3

Cisco ≫ Cyber Vision Version 5.2.0

Cisco ≫ Cyber Vision Version 5.2.1

Cisco ≫ Cyber Vision Version 5.3.0

Cisco ≫ Cyber Vision Version 5.3.1

Cisco ≫ Cyber Vision Version 5.3.2

Cisco ≫ Secure Firewall Threat Defense Version 7.0.0

Cisco ≫ Secure Firewall Threat Defense Version 7.0.0.1

Cisco ≫ Secure Firewall Threat Defense Version 7.0.1

Cisco ≫ Secure Firewall Threat Defense Version 7.0.1.1

Cisco ≫ Secure Firewall Threat Defense Version 7.0.2

Cisco ≫ Secure Firewall Threat Defense Version 7.0.2.1

Cisco ≫ Secure Firewall Threat Defense Version 7.0.3

Cisco ≫ Secure Firewall Threat Defense Version 7.0.4

Cisco ≫ Secure Firewall Threat Defense Version 7.0.5

Cisco ≫ Secure Firewall Threat Defense Version 7.0.6

Cisco ≫ Secure Firewall Threat Defense Version 7.0.6.1

Cisco ≫ Secure Firewall Threat Defense Version 7.0.6.2

Cisco ≫ Secure Firewall Threat Defense Version 7.0.6.3

Cisco ≫ Secure Firewall Threat Defense Version 7.0.7

Cisco ≫ Secure Firewall Threat Defense Version 7.0.8

Cisco ≫ Secure Firewall Threat Defense Version 7.0.8.1

Cisco ≫ Secure Firewall Threat Defense Version 7.1.0

Cisco ≫ Secure Firewall Threat Defense Version 7.1.0.1

Cisco ≫ Secure Firewall Threat Defense Version 7.1.0.2

Cisco ≫ Secure Firewall Threat Defense Version 7.1.0.3

Cisco ≫ Secure Firewall Threat Defense Version 7.2.0

Cisco ≫ Secure Firewall Threat Defense Version 7.2.0.1

Cisco ≫ Secure Firewall Threat Defense Version 7.2.1

Cisco ≫ Secure Firewall Threat Defense Version 7.2.2

Cisco ≫ Secure Firewall Threat Defense Version 7.2.3

Cisco ≫ Secure Firewall Threat Defense Version 7.2.4

Cisco ≫ Secure Firewall Threat Defense Version 7.2.4.1

Cisco ≫ Secure Firewall Threat Defense Version 7.2.5

Cisco ≫ Secure Firewall Threat Defense Version 7.2.5.1

Cisco ≫ Secure Firewall Threat Defense Version 7.2.5.2

Cisco ≫ Secure Firewall Threat Defense Version 7.2.6

Cisco ≫ Secure Firewall Threat Defense Version 7.2.7

Cisco ≫ Secure Firewall Threat Defense Version 7.2.8

Cisco ≫ Secure Firewall Threat Defense Version 7.2.8.1

Cisco ≫ Secure Firewall Threat Defense Version 7.2.9

Cisco ≫ Secure Firewall Threat Defense Version 7.2.10

Cisco ≫ Secure Firewall Threat Defense Version 7.2.10.2

Cisco ≫ Secure Firewall Threat Defense Version 7.3.0

Cisco ≫ Secure Firewall Threat Defense Version 7.3.1

Cisco ≫ Secure Firewall Threat Defense Version 7.3.1.1

Cisco ≫ Secure Firewall Threat Defense Version 7.3.1.2

Cisco ≫ Secure Firewall Threat Defense Version 7.4.0

Cisco ≫ Secure Firewall Threat Defense Version 7.4.1

Cisco ≫ Secure Firewall Threat Defense Version 7.4.1.1

Cisco ≫ Secure Firewall Threat Defense Version 7.4.2

Cisco ≫ Secure Firewall Threat Defense Version 7.4.2.1

Cisco ≫ Secure Firewall Threat Defense Version 7.4.2.2

Cisco ≫ Secure Firewall Threat Defense Version 7.4.2.3

Cisco ≫ Secure Firewall Threat Defense Version 7.4.2.4

Cisco ≫ Secure Firewall Threat Defense Version 7.4.3

Cisco ≫ Secure Firewall Threat Defense Version 7.6.0

Cisco ≫ Secure Firewall Threat Defense Version 7.6.1

Cisco ≫ Secure Firewall Threat Defense Version 7.6.2

Cisco ≫ Secure Firewall Threat Defense Version 7.6.2.1

Cisco ≫ Secure Firewall Threat Defense Version 7.7.0

Cisco ≫ Secure Firewall Threat Defense Version 7.7.10

Cisco ≫ Secure Firewall Threat Defense Version 7.7.10.1

Cisco ≫ Unified Threat Defense Snort Intrusion Prevention System Engine Version 17.2.1r

Cisco ≫ Unified Threat Defense Snort Intrusion Prevention System Engine Version 17.3.1a

Cisco ≫ Unified Threat Defense Snort Intrusion Prevention System Engine Version 17.3.2

Cisco ≫ Unified Threat Defense Snort Intrusion Prevention System Engine Version 17.3.3

Cisco ≫ Unified Threat Defense Snort Intrusion Prevention System Engine Version 17.3.4

Cisco ≫ Unified Threat Defense Snort Intrusion Prevention System Engine Version 17.3.4a

Cisco ≫ Unified Threat Defense Snort Intrusion Prevention System Engine Version 17.3.5

Cisco ≫ Unified Threat Defense Snort Intrusion Prevention System Engine Version 17.3.6

Cisco ≫ Unified Threat Defense Snort Intrusion Prevention System Engine Version 17.3.7

Cisco ≫ Unified Threat Defense Snort Intrusion Prevention System Engine Version 17.3.8

Cisco ≫ Unified Threat Defense Snort Intrusion Prevention System Engine Version 17.3.8a

Cisco ≫ Unified Threat Defense Snort Intrusion Prevention System Engine Version 17.4.1a

Cisco ≫ Unified Threat Defense Snort Intrusion Prevention System Engine Version 17.4.1b

Cisco ≫ Unified Threat Defense Snort Intrusion Prevention System Engine Version 17.4.2

Cisco ≫ Unified Threat Defense Snort Intrusion Prevention System Engine Version 17.5.1

Cisco ≫ Unified Threat Defense Snort Intrusion Prevention System Engine Version 17.5.1a

Cisco ≫ Unified Threat Defense Snort Intrusion Prevention System Engine Version 17.6.1a

Cisco ≫ Unified Threat Defense Snort Intrusion Prevention System Engine Version 17.6.2

Cisco ≫ Unified Threat Defense Snort Intrusion Prevention System Engine Version 17.6.3

Cisco ≫ Unified Threat Defense Snort Intrusion Prevention System Engine Version 17.6.3a

Cisco ≫ Unified Threat Defense Snort Intrusion Prevention System Engine Version 17.6.4

Cisco ≫ Unified Threat Defense Snort Intrusion Prevention System Engine Version 17.6.5

Cisco ≫ Unified Threat Defense Snort Intrusion Prevention System Engine Version 17.6.6

Cisco ≫ Unified Threat Defense Snort Intrusion Prevention System Engine Version 17.6.6a

Cisco ≫ Unified Threat Defense Snort Intrusion Prevention System Engine Version 17.6.7

Cisco ≫ Unified Threat Defense Snort Intrusion Prevention System Engine Version 17.6.8

Cisco ≫ Unified Threat Defense Snort Intrusion Prevention System Engine Version 17.6.8a

Cisco ≫ Unified Threat Defense Snort Intrusion Prevention System Engine Version 17.7.1a

Cisco ≫ Unified Threat Defense Snort Intrusion Prevention System Engine Version 17.7.2

Cisco ≫ Unified Threat Defense Snort Intrusion Prevention System Engine Version 17.8.1a

Cisco ≫ Unified Threat Defense Snort Intrusion Prevention System Engine Version 17.9.1a

Cisco ≫ Unified Threat Defense Snort Intrusion Prevention System Engine Version 17.9.2a

Cisco ≫ Unified Threat Defense Snort Intrusion Prevention System Engine Version 17.9.3a

Cisco ≫ Unified Threat Defense Snort Intrusion Prevention System Engine Version 17.9.4

Cisco ≫ Unified Threat Defense Snort Intrusion Prevention System Engine Version 17.9.4a

Cisco ≫ Unified Threat Defense Snort Intrusion Prevention System Engine Version 17.9.5a

Cisco ≫ Unified Threat Defense Snort Intrusion Prevention System Engine Version 17.9.5e

Cisco ≫ Unified Threat Defense Snort Intrusion Prevention System Engine Version 17.9.5f

Cisco ≫ Unified Threat Defense Snort Intrusion Prevention System Engine Version 17.9.6

Cisco ≫ Unified Threat Defense Snort Intrusion Prevention System Engine Version 17.9.7a

Cisco ≫ Unified Threat Defense Snort Intrusion Prevention System Engine Version 17.9.7b

Cisco ≫ Unified Threat Defense Snort Intrusion Prevention System Engine Version 17.9.8

Cisco ≫ Unified Threat Defense Snort Intrusion Prevention System Engine Version 17.10.1a

Cisco ≫ Unified Threat Defense Snort Intrusion Prevention System Engine Version 17.11.1a

Cisco ≫ Unified Threat Defense Snort Intrusion Prevention System Engine Version 17.12.1a

Cisco ≫ Unified Threat Defense Snort Intrusion Prevention System Engine Version 17.12.2

Cisco ≫ Unified Threat Defense Snort Intrusion Prevention System Engine Version 17.12.3

Cisco ≫ Unified Threat Defense Snort Intrusion Prevention System Engine Version 17.12.3a

Cisco ≫ Unified Threat Defense Snort Intrusion Prevention System Engine Version 17.12.4

Cisco ≫ Unified Threat Defense Snort Intrusion Prevention System Engine Version 17.12.4a

Cisco ≫ Unified Threat Defense Snort Intrusion Prevention System Engine Version 17.12.4b

Cisco ≫ Unified Threat Defense Snort Intrusion Prevention System Engine Version 17.12.5

Cisco ≫ Unified Threat Defense Snort Intrusion Prevention System Engine Version 17.12.5a

Cisco ≫ Unified Threat Defense Snort Intrusion Prevention System Engine Version 17.12.5b

Cisco ≫ Unified Threat Defense Snort Intrusion Prevention System Engine Version 17.12.5c

Cisco ≫ Unified Threat Defense Snort Intrusion Prevention System Engine Version 17.12.5d

Cisco ≫ Unified Threat Defense Snort Intrusion Prevention System Engine Version 17.12.6

Cisco ≫ Unified Threat Defense Snort Intrusion Prevention System Engine Version 17.13.1a

Cisco ≫ Unified Threat Defense Snort Intrusion Prevention System Engine Version 17.14.1a

Cisco ≫ Unified Threat Defense Snort Intrusion Prevention System Engine Version 17.15.1a

Cisco ≫ Unified Threat Defense Snort Intrusion Prevention System Engine Version 17.15.2a

Cisco ≫ Unified Threat Defense Snort Intrusion Prevention System Engine Version 17.15.2c

Cisco ≫ Unified Threat Defense Snort Intrusion Prevention System Engine Version 17.15.3

Cisco ≫ Unified Threat Defense Snort Intrusion Prevention System Engine Version 17.15.3a

Cisco ≫ Unified Threat Defense Snort Intrusion Prevention System Engine Version 17.15.4

Cisco ≫ Unified Threat Defense Snort Intrusion Prevention System Engine Version 17.15.4c

Cisco ≫ Unified Threat Defense Snort Intrusion Prevention System Engine Version 17.16.1a

Cisco ≫ Unified Threat Defense Snort Intrusion Prevention System Engine Version 17.17.1

Cisco ≫ Unified Threat Defense Snort Intrusion Prevention System Engine Version 17.18.1

Cisco ≫ Unified Threat Defense Snort Intrusion Prevention System Engine Version 17.18.1a

Cisco ≫ Unified Threat Defense Snort Intrusion Prevention System Engine Version 17.18.2

VulnDex Vulnerability Enrichment

Diese Information steht angemeldeten Benutzern zur Verfügung.

Zu dieser CVE wurde keine Warnung gefunden.

EPSS Metriken
Typ	Quelle	Score	Percentile
EPSS	FIRST.org	0.48%	0.372

CVSS Metriken
Quelle	Base Score	Exploit Score	Impact Score	Vector String
Cisco PSIRT	5.8	3.9	1.4	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:L

CWE-787 Out-of-bounds Write

The product writes data past the end, or before the beginning, of the intended buffer.

https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-snort3-multi-dos-XFWkWSwz

Vendor Advisory

https://nvd.nist.gov/vuln/detail/CVE-2026-20067

CVE Source (NVD)

https://cveawg.mitre.org/api/cve/CVE-2026-20067

CVE Source (JSON)

https://euvd.enisa.europa.eu/vulnerability/CVE-2026-20067

EUVD