5.8

CVE-2026-20067

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.
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Produkt Cisco Cyber Vision
Default Statusunknown
Version 3.0.0
Status affected
Version 3.0.2
Status affected
Version 3.0.3
Status affected
Version 3.0.1
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Version 3.1.0
Status affected
Version 3.0.4
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Version 3.1.1
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Version 3.1.2
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Version 3.2.0
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Version 3.0.5
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Version 3.2.1
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Version 3.0.6
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Version 3.2.2
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Version 3.2.3
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Version 3.2.4
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Version 4.0.0
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Version 4.0.1
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Version 4.0.2
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Version 4.0.3
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Version 4.1.0
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Version 4.1.1
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Version 4.1.2
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Version 4.1.3
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Version 4.1.4
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Version 4.2.0
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Version 4.2.1
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Version 4.1.5
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Version 4.2.2
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Version 4.2.X
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Version 4.2.3
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Version 4.2.4
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Version 4.2.6
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Version 4.1.6
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Version 4.3.0
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Version 4.3.1
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Version 4.3.2
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Version 4.3.3
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Version 4.4.0
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Version 4.4.1
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Version 4.4.2
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Version 4.4.3
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Version 4.1.7
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Version 5.0.0
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Version 5.0.1
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Version 5.0.2
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Version 5.1.0
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Version 5.1.1
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Version 5.1.2
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Version 5.1.3
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Version 5.2.0
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Version 5.2.1
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Version 5.3.0
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Version 5.3.1
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Version 5.3.2
Status affected
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Produkt Cisco Secure Firewall Threat Defense (FTD) Software
Default Statusunknown
Version 7.0.0
Status affected
Version 7.0.0.1
Status affected
Version 7.0.1
Status affected
Version 7.1.0
Status affected
Version 7.0.1.1
Status affected
Version 7.1.0.1
Status affected
Version 7.0.2
Status affected
Version 7.2.0
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Version 7.0.2.1
Status affected
Version 7.0.3
Status affected
Version 7.1.0.2
Status affected
Version 7.2.0.1
Status affected
Version 7.0.4
Status affected
Version 7.2.1
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Version 7.0.5
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Version 7.3.0
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Version 7.2.2
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Version 7.2.3
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Version 7.3.1
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Version 7.1.0.3
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Version 7.2.4
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Version 7.0.6
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Version 7.2.5
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Version 7.2.4.1
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Version 7.3.1.1
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Version 7.4.0
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Version 7.0.6.1
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Version 7.2.5.1
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Version 7.4.1
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Version 7.2.6
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Version 7.0.6.2
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Version 7.4.1.1
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Version 7.2.7
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Version 7.2.5.2
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Version 7.3.1.2
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Version 7.2.8
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Version 7.6.0
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Version 7.4.2
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Version 7.2.8.1
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Version 7.0.6.3
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Version 7.4.2.1
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Version 7.2.9
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Version 7.0.7
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Version 7.7.0
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Version 7.4.2.2
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Version 7.2.10
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Version 7.6.1
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Version 7.4.2.3
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Version 7.0.8
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Version 7.6.2
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Version 7.7.10
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Version 7.0.8.1
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Version 7.6.2.1
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Version 7.7.10.1
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Version 7.4.2.4
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Version 7.2.10.2
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Version 7.4.3
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HerstellerCisco
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Produkt Cisco UTD SNORT IPS Engine Software
Default Statusunknown
Version 17.3.1a
Status affected
Version 17.2.1r
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Version 17.3.2
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Version 17.4.1a
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Version 17.5.1
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Version 17.3.3
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Version 17.5.1a
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Version 17.3.4
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Version 17.3.4a
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Version 17.4.2
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Version 17.4.1b
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Version 17.6.1a
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Version 17.7.1a
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Version 17.6.2
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Version 17.8.1a
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Version 17.3.5
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Version 17.6.3
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Version 17.6.3a
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Version 17.7.2
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Version 17.9.1a
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Version 17.6.4
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Version 17.10.1a
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Version 17.3.6
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Version 17.3.7
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Version 17.9.2a
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Version 17.6.5
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Version 17.11.1a
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Version 17.9.3a
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Version 17.12.1a
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Version 17.9.4
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Version 17.6.6
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Version 17.3.8
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Version 17.3.8a
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Version 17.6.6a
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Version 17.9.4a
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Version 17.12.2
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Version 17.13.1a
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Version 17.9.5a
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Version 17.12.3
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Version 17.6.7
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Version 17.14.1a
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Version 17.12.4
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Version 17.12.3a
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Version 17.15.1a
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Version 17.6.8
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Version 17.9.6
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Version 17.6.8a
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Version 17.16.1a
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Version 17.9.5e
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Version 17.12.4a
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Version 17.15.2c
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Version 17.9.5f
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Version 17.12.4b
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Version 17.15.2a
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Version 17.12.5
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Version 17.17.1
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Version 17.12.5a
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Version 17.9.7a
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Version 17.15.3a
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Version 17.15.3
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Version 17.12.5b
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Version 17.12.5c
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Version 17.15.4
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Version 17.9.7b
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Version 17.18.1
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Version 17.18.1a
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Version 17.12.6
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Version 17.9.8
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Version 17.15.4c
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Version 17.12.5d
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Version 17.18.2
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Zu dieser CVE wurde keine CISA KEV oder CERT.AT-Warnung gefunden.
EPSS Metriken
Typ Quelle Score Percentile
EPSS FIRST.org 0.13% 0.318
CVSS Metriken
Quelle Base Score Exploit Score Impact Score Vector String
psirt@cisco.com 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.