5.8

CVE-2026-20054

EPSS 0.43%
Veröffentlicht 04.03.2026 17:47:05
Zuletzt bearbeitet 20.08.2026 15:19:41
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Cisco Secure Firewall Threat Defense Software Snort 3 Visual Basic for Application Infinite Loop Denial of Service Vulnerability

Multiple Cisco products are affected by a vulnerability in the Snort 3 VBA feature that could allow an unauthenticated, remote attacker to cause the Snort 3 Detection Engine to crash. 

This vulnerability is due to improper error checking when decompressing VBA data. An attacker could exploit this vulnerability by sending crafted VBA data to the Snort 3 Detection Engine on the targeted device. A successful exploit could allow the attacker to cause the Snort 3 Detection Engine to enter an infinite loop, causing a DoS condition.

Betroffene Produkte Warnungen 0 Metriken 2 CWE 1 Referenzen 4

NVD 194 VulnDex Vulnerability Enrichment 1

Daten sind bereitgestellt durch National Vulnerability Database (NVD)

Cisco ≫ Snort Version >= 3.0.0-233 < 3.9.3.0

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 7.2.0

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 3.17.0s

Cisco ≫ Unified Threat Defense Snort Intrusion Prevention System Engine Version 3.17.1s

Cisco ≫ Unified Threat Defense Snort Intrusion Prevention System Engine Version 16.6.1

Cisco ≫ Unified Threat Defense Snort Intrusion Prevention System Engine Version 16.6.5

Cisco ≫ Unified Threat Defense Snort Intrusion Prevention System Engine Version 16.6.6

Cisco ≫ Unified Threat Defense Snort Intrusion Prevention System Engine Version 16.6.7a

Cisco ≫ Unified Threat Defense Snort Intrusion Prevention System Engine Version 16.6.9

Cisco ≫ Unified Threat Defense Snort Intrusion Prevention System Engine Version 16.6.10

Cisco ≫ Unified Threat Defense Snort Intrusion Prevention System Engine Version 16.12.1a

Cisco ≫ Unified Threat Defense Snort Intrusion Prevention System Engine Version 16.12.2

Cisco ≫ Unified Threat Defense Snort Intrusion Prevention System Engine Version 16.12.3

Cisco ≫ Unified Threat Defense Snort Intrusion Prevention System Engine Version 16.12.4

Cisco ≫ Unified Threat Defense Snort Intrusion Prevention System Engine Version 16.12.5

Cisco ≫ Unified Threat Defense Snort Intrusion Prevention System Engine Version 16.12.6

Cisco ≫ Unified Threat Defense Snort Intrusion Prevention System Engine Version 16.12.7

Cisco ≫ Unified Threat Defense Snort Intrusion Prevention System Engine Version 16.12.8

Cisco ≫ Unified Threat Defense Snort Intrusion Prevention System Engine Version 17.1.1

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

Cisco ≫ Unified Threat Defense Snort Intrusion Prevention System Engine Version denali-16.3.3

Cisco ≫ Unified Threat Defense Snort Intrusion Prevention System Engine Version denali-16.3.4

Cisco ≫ Unified Threat Defense Snort Intrusion Prevention System Engine Version denali-16.3.5

Cisco ≫ Unified Threat Defense Snort Intrusion Prevention System Engine Version denali-16.3.7

Cisco ≫ Unified Threat Defense Snort Intrusion Prevention System Engine Version denali-16.3.9

Cisco ≫ Unified Threat Defense Snort Intrusion Prevention System Engine Version everest-16.6.2

Cisco ≫ Unified Threat Defense Snort Intrusion Prevention System Engine Version everest-16.6.3

Cisco ≫ Unified Threat Defense Snort Intrusion Prevention System Engine Version everest-16.6.4

Cisco ≫ Unified Threat Defense Snort Intrusion Prevention System Engine Version fuji-16.9.2

Cisco ≫ Unified Threat Defense Snort Intrusion Prevention System Engine Version fuji-16.9.3

Cisco ≫ Unified Threat Defense Snort Intrusion Prevention System Engine Version fuji-16.9.4

Cisco ≫ Unified Threat Defense Snort Intrusion Prevention System Engine Version fuji-16.9.5

Cisco ≫ Unified Threat Defense Snort Intrusion Prevention System Engine Version fuji-16.9.6

Cisco ≫ Unified Threat Defense Snort Intrusion Prevention System Engine Version fuji-16.9.7

Cisco ≫ Unified Threat Defense Snort Intrusion Prevention System Engine Version fuji-16.9.8

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	0.43%	0.344

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-835 Loop with Unreachable Exit Condition ('Infinite Loop')

The product contains an iteration or loop with an exit condition that cannot be reached, i.e., an infinite loop.

https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-ftd-snort3-vbavuls-96UcVVed

Vendor Advisory

Mitigation

https://nvd.nist.gov/vuln/detail/CVE-2026-20054

CVE Source (NVD)

https://cveawg.mitre.org/api/cve/CVE-2026-20054

CVE Source (JSON)

https://euvd.enisa.europa.eu/vulnerability/CVE-2026-20054

EUVD