5.8

CVE-2026-20290

Cisco Secure Firewall Threat Defense Software Snort 2 SSL/TLS Denial of Service Vulnerability

A vulnerability in SSL/TLS certificate parsing in the Snort 2 Detection Engine of Cisco Secure Firewall Threat Defense (FTD) Software could allow an unauthenticated, remote attacker to cause the Snort 2 Detection Engine to restart.

This vulnerability is due to incomplete validation of the SSL certificate. An attacker could exploit this vulnerability by sending a crafted SSL connection setup request to be parsed by Snort 2. A successful exploit could allow the attacker to cause the Snort 2 Detection Engine to restart unexpectedly, resulting in a denial of service (DoS) condition.
Daten sind bereitgestellt durch das CVE Programm von einer CVE Numbering Authority (CNA) (Unstrukturiert).
HerstellerCisco
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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
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Version 7.0.1.1
Status affected
Version 7.0.2
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Version 7.2.0
Status affected
Version 7.0.2.1
Status affected
Version 7.0.3
Status affected
Version 7.2.0.1
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Version 7.0.4
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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 7.2.4
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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 7.4.2.2
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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 7.0.8.1
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Version 7.6.2.1
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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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Version 7.6.4
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Version 7.4.4
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Version 7.0.9
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Version 7.2.11
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Version 7.4.7
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VulnDex Vulnerability Enrichment
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Zu dieser CVE wurde keine Warnung gefunden.
EPSS Metriken
Typ Quelle Score Percentile
EPSS FIRST.org 0.19% 0.089
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-805 Buffer Access with Incorrect Length Value

The product uses a sequential operation to read or write a buffer, but it uses an incorrect length value that causes it to access memory that is outside of the bounds of the buffer.

https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-ftd-snort2-ssldos-Mw7WYX9c