Multiple Cisco Products Snort Modbus Denial of Service Vulnerability

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Summary

CVECVE-2022-20685
StatePUBLISHED
Assignercisco
Source PriorityCVE Program / NVD first with legacy fallback
Published2024-11-15 16:15:21 UTC
Updated2026-08-11 19:33:44 UTC
DescriptionA vulnerability in the Modbus preprocessor of the Snort detection engine could allow an unauthenticated, remote attacker to cause a denial of service (DoS) condition on an affected device. This vulnerability is due to an integer overflow while processing Modbus traffic. An attacker could exploit this vulnerability by sending crafted Modbus traffic through an affected device. A successful exploit could allow the attacker to cause the Snort process to hang, causing traffic inspection to stop.Cisco has released software updates that address this vulnerability. There are no workarounds that address this vulnerability.

Risk And Classification

Primary CVSS: v3.1 7.5 HIGH from ADP

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

EPSS: 0.013860000 probability, percentile 0.697380000 (date 2026-08-12)

Problem Types: CWE-190 | CWE-190 Integer Overflow or Wraparound | CWE-190 CWE-190 Integer Overflow or Wraparound

VersionSourceTypeScoreSeverityVector
3.1ADPDECLARED7.5HIGHCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
3.1[email protected]Secondary7.5HIGHCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
3.1134c704f-9b21-4f2e-91b3-4a467353bcc0Secondary7.5HIGHCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
3.1CNACVSSV3_17.5HIGHCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

CVSS v3.1 Breakdown

Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
None
Integrity
None
Availability
High

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

NVD Known Affected Configurations (CPE 2.3)

TypeVendorProductVersionUpdateEditionLanguage
Application Cisco Cyber Vision 3.0.0 All All All
Application Cisco Cyber Vision 3.0.1 All All All
Application Cisco Cyber Vision 3.0.2 All All All
Application Cisco Cyber Vision 3.0.3 All All All
Application Cisco Cyber Vision 3.0.4 All All All
Application Cisco Cyber Vision 3.0.5 All All All
Application Cisco Cyber Vision 3.0.6 All All All
Application Cisco Cyber Vision 3.1.0 All All All
Application Cisco Cyber Vision 3.1.1 All All All
Application Cisco Cyber Vision 3.1.2 All All All
Application Cisco Cyber Vision 3.2.0 All All All
Application Cisco Cyber Vision 3.2.1 All All All
Application Cisco Cyber Vision 3.2.2 All All All
Application Cisco Cyber Vision 3.2.3 All All All
Application Cisco Cyber Vision 3.2.4 All All All
Application Cisco Cyber Vision 4.0.0 All All All
Application Cisco Cyber Vision 4.0.1 All All All
Application Cisco Secure Firewall Threat Defense 6.2.3 All All All
Application Cisco Secure Firewall Threat Defense 6.2.3.1 All All All
Application Cisco Secure Firewall Threat Defense 6.2.3.10 All All All
Application Cisco Secure Firewall Threat Defense 6.2.3.11 All All All
Application Cisco Secure Firewall Threat Defense 6.2.3.12 All All All
Application Cisco Secure Firewall Threat Defense 6.2.3.13 All All All
Application Cisco Secure Firewall Threat Defense 6.2.3.14 All All All
Application Cisco Secure Firewall Threat Defense 6.2.3.15 All All All
Application Cisco Secure Firewall Threat Defense 6.2.3.16 All All All
Application Cisco Secure Firewall Threat Defense 6.2.3.17 All All All
Application Cisco Secure Firewall Threat Defense 6.2.3.18 All All All
Application Cisco Secure Firewall Threat Defense 6.2.3.2 All All All
Application Cisco Secure Firewall Threat Defense 6.2.3.3 All All All
Application Cisco Secure Firewall Threat Defense 6.2.3.4 All All All
Application Cisco Secure Firewall Threat Defense 6.2.3.5 All All All
Application Cisco Secure Firewall Threat Defense 6.2.3.6 All All All
Application Cisco Secure Firewall Threat Defense 6.2.3.7 All All All
Application Cisco Secure Firewall Threat Defense 6.2.3.8 All All All
Application Cisco Secure Firewall Threat Defense 6.2.3.9 All All All
Application Cisco Secure Firewall Threat Defense 6.4.0 All All All
Application Cisco Secure Firewall Threat Defense 6.4.0.1 All All All
Application Cisco Secure Firewall Threat Defense 6.4.0.10 All All All
Application Cisco Secure Firewall Threat Defense 6.4.0.11 All All All
Application Cisco Secure Firewall Threat Defense 6.4.0.12 All All All
Application Cisco Secure Firewall Threat Defense 6.4.0.2 All All All
Application Cisco Secure Firewall Threat Defense 6.4.0.3 All All All
Application Cisco Secure Firewall Threat Defense 6.4.0.4 All All All
Application Cisco Secure Firewall Threat Defense 6.4.0.5 All All All
Application Cisco Secure Firewall Threat Defense 6.4.0.6 All All All
Application Cisco Secure Firewall Threat Defense 6.4.0.7 All All All
Application Cisco Secure Firewall Threat Defense 6.4.0.8 All All All
Application Cisco Secure Firewall Threat Defense 6.4.0.9 All All All
Application Cisco Secure Firewall Threat Defense 6.6.0 All All All
Application Cisco Secure Firewall Threat Defense 6.6.0.1 All All All
Application Cisco Secure Firewall Threat Defense 6.6.1 All All All
Application Cisco Secure Firewall Threat Defense 6.6.3 All All All
Application Cisco Secure Firewall Threat Defense 6.6.4 All All All
Application Cisco Secure Firewall Threat Defense 6.6.5 All All All
Application Cisco Secure Firewall Threat Defense 6.7.0 All All All
Application Cisco Secure Firewall Threat Defense 6.7.0.1 All All All
Application Cisco Secure Firewall Threat Defense 6.7.0.2 All All All
Application Cisco Secure Firewall Threat Defense 6.7.0.3 All All All
Application Cisco Secure Firewall Threat Defense 7.0.0 All All All
Application Cisco Secure Firewall Threat Defense 7.0.0.1 All All All
Operating System Cisco Unified Threat Defense Snort Intrusion Prevention System Engine 16.12.1a All All All
Operating System Cisco Unified Threat Defense Snort Intrusion Prevention System Engine 16.12.2 All All All
Operating System Cisco Unified Threat Defense Snort Intrusion Prevention System Engine 16.12.3 All All All
Operating System Cisco Unified Threat Defense Snort Intrusion Prevention System Engine 16.12.4 All All All
Operating System Cisco Unified Threat Defense Snort Intrusion Prevention System Engine 16.12.5 All All All
Operating System Cisco Unified Threat Defense Snort Intrusion Prevention System Engine 16.12.6 All All All
Operating System Cisco Unified Threat Defense Snort Intrusion Prevention System Engine 16.6.1 All All All
Operating System Cisco Unified Threat Defense Snort Intrusion Prevention System Engine 16.6.10 All All All
Operating System Cisco Unified Threat Defense Snort Intrusion Prevention System Engine 16.6.5 All All All
Operating System Cisco Unified Threat Defense Snort Intrusion Prevention System Engine 16.6.6 All All All
Operating System Cisco Unified Threat Defense Snort Intrusion Prevention System Engine 16.6.7a All All All
Operating System Cisco Unified Threat Defense Snort Intrusion Prevention System Engine 16.6.9 All All All
Operating System Cisco Unified Threat Defense Snort Intrusion Prevention System Engine 17.1.1 All All All
Operating System Cisco Unified Threat Defense Snort Intrusion Prevention System Engine 17.2.1r All All All
Operating System Cisco Unified Threat Defense Snort Intrusion Prevention System Engine 17.3.1a All All All
Operating System Cisco Unified Threat Defense Snort Intrusion Prevention System Engine 17.3.2 All All All
Operating System Cisco Unified Threat Defense Snort Intrusion Prevention System Engine 17.3.3 All All All
Operating System Cisco Unified Threat Defense Snort Intrusion Prevention System Engine 17.3.4 All All All
Operating System Cisco Unified Threat Defense Snort Intrusion Prevention System Engine 17.3.4a All All All
Operating System Cisco Unified Threat Defense Snort Intrusion Prevention System Engine 17.4.1a All All All
Operating System Cisco Unified Threat Defense Snort Intrusion Prevention System Engine 17.4.1b All All All
Operating System Cisco Unified Threat Defense Snort Intrusion Prevention System Engine 17.4.2 All All All
Operating System Cisco Unified Threat Defense Snort Intrusion Prevention System Engine 17.5.1 All All All
Operating System Cisco Unified Threat Defense Snort Intrusion Prevention System Engine 17.5.1a All All All
Operating System Cisco Unified Threat Defense Snort Intrusion Prevention System Engine 17.6.1a All All All
Operating System Cisco Unified Threat Defense Snort Intrusion Prevention System Engine 17.7.1a All All All
Operating System Cisco Unified Threat Defense Snort Intrusion Prevention System Engine 3.17.0s All All All
Operating System Cisco Unified Threat Defense Snort Intrusion Prevention System Engine 3.17.1s All All All
Operating System Cisco Unified Threat Defense Snort Intrusion Prevention System Engine denali-16.3.3 All All All
Operating System Cisco Unified Threat Defense Snort Intrusion Prevention System Engine denali-16.3.4 All All All
Operating System Cisco Unified Threat Defense Snort Intrusion Prevention System Engine denali-16.3.5 All All All
Operating System Cisco Unified Threat Defense Snort Intrusion Prevention System Engine denali-16.3.7 All All All
Operating System Cisco Unified Threat Defense Snort Intrusion Prevention System Engine denali-16.3.9 All All All
Operating System Cisco Unified Threat Defense Snort Intrusion Prevention System Engine everest-16.6.2 All All All
Operating System Cisco Unified Threat Defense Snort Intrusion Prevention System Engine everest-16.6.3 All All All
Operating System Cisco Unified Threat Defense Snort Intrusion Prevention System Engine everest-16.6.4 All All All
Operating System Cisco Unified Threat Defense Snort Intrusion Prevention System Engine fuji-16.9.2 All All All
Operating System Cisco Unified Threat Defense Snort Intrusion Prevention System Engine fuji-16.9.3 All All All
Operating System Cisco Unified Threat Defense Snort Intrusion Prevention System Engine fuji-16.9.4 All All All
Operating System Cisco Unified Threat Defense Snort Intrusion Prevention System Engine fuji-16.9.5 All All All
Operating System Cisco Unified Threat Defense Snort Intrusion Prevention System Engine fuji-16.9.6 All All All
Operating System Cisco Unified Threat Defense Snort Intrusion Prevention System Engine fuji-16.9.7 All All All
Operating System Cisco Unified Threat Defense Snort Intrusion Prevention System Engine fuji-16.9.8 All All All

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA Cisco Cisco Cyber Vision affected 3.0.0 Not specified
CNA Cisco Cisco Cyber Vision affected 3.0.2 Not specified
CNA Cisco Cisco Cyber Vision affected 3.0.3 Not specified
CNA Cisco Cisco Cyber Vision affected 3.0.1 Not specified
CNA Cisco Cisco Cyber Vision affected 3.1.0 Not specified
CNA Cisco Cisco Cyber Vision affected 3.0.4 Not specified
CNA Cisco Cisco Cyber Vision affected 3.1.1 Not specified
CNA Cisco Cisco Cyber Vision affected 3.1.2 Not specified
CNA Cisco Cisco Cyber Vision affected 3.2.0 Not specified
CNA Cisco Cisco Cyber Vision affected 3.0.5 Not specified
CNA Cisco Cisco Cyber Vision affected 3.2.1 Not specified
CNA Cisco Cisco Cyber Vision affected 3.0.6 Not specified
CNA Cisco Cisco Cyber Vision affected 3.2.2 Not specified
CNA Cisco Cisco Cyber Vision affected 3.2.3 Not specified
CNA Cisco Cisco Cyber Vision affected 3.2.4 Not specified
CNA Cisco Cisco Cyber Vision affected 4.0.0 Not specified
CNA Cisco Cisco Cyber Vision affected 4.0.1 Not specified
CNA Cisco Cisco Firepower Threat Defense Software affected 6.2.3.14 Not specified
CNA Cisco Cisco Firepower Threat Defense Software affected 6.4.0.1 Not specified
CNA Cisco Cisco Firepower Threat Defense Software affected 6.2.3.7 Not specified
CNA Cisco Cisco Firepower Threat Defense Software affected 6.2.3 Not specified
CNA Cisco Cisco Firepower Threat Defense Software affected 6.4.0.2 Not specified
CNA Cisco Cisco Firepower Threat Defense Software affected 6.2.3.9 Not specified
CNA Cisco Cisco Firepower Threat Defense Software affected 6.2.3.1 Not specified
CNA Cisco Cisco Firepower Threat Defense Software affected 6.2.3.2 Not specified
CNA Cisco Cisco Firepower Threat Defense Software affected 6.4.0.5 Not specified
CNA Cisco Cisco Firepower Threat Defense Software affected 6.2.3.10 Not specified
CNA Cisco Cisco Firepower Threat Defense Software affected 6.4.0 Not specified
CNA Cisco Cisco Firepower Threat Defense Software affected 6.4.0.3 Not specified
CNA Cisco Cisco Firepower Threat Defense Software affected 6.2.3.6 Not specified
CNA Cisco Cisco Firepower Threat Defense Software affected 6.4.0.4 Not specified
CNA Cisco Cisco Firepower Threat Defense Software affected 6.2.3.15 Not specified
CNA Cisco Cisco Firepower Threat Defense Software affected 6.2.3.5 Not specified
CNA Cisco Cisco Firepower Threat Defense Software affected 6.2.3.4 Not specified
CNA Cisco Cisco Firepower Threat Defense Software affected 6.2.3.3 Not specified
CNA Cisco Cisco Firepower Threat Defense Software affected 6.2.3.8 Not specified
CNA Cisco Cisco Firepower Threat Defense Software affected 6.4.0.6 Not specified
CNA Cisco Cisco Firepower Threat Defense Software affected 6.2.3.11 Not specified
CNA Cisco Cisco Firepower Threat Defense Software affected 6.2.3.12 Not specified
CNA Cisco Cisco Firepower Threat Defense Software affected 6.2.3.13 Not specified
CNA Cisco Cisco Firepower Threat Defense Software affected 6.4.0.7 Not specified
CNA Cisco Cisco Firepower Threat Defense Software affected 6.4.0.8 Not specified
CNA Cisco Cisco Firepower Threat Defense Software affected 6.6.0 Not specified
CNA Cisco Cisco Firepower Threat Defense Software affected 6.4.0.9 Not specified
CNA Cisco Cisco Firepower Threat Defense Software affected 6.2.3.16 Not specified
CNA Cisco Cisco Firepower Threat Defense Software affected 6.6.0.1 Not specified
CNA Cisco Cisco Firepower Threat Defense Software affected 6.6.1 Not specified
CNA Cisco Cisco Firepower Threat Defense Software affected 6.4.0.10 Not specified
CNA Cisco Cisco Firepower Threat Defense Software affected 6.7.0 Not specified
CNA Cisco Cisco Firepower Threat Defense Software affected 6.4.0.11 Not specified
CNA Cisco Cisco Firepower Threat Defense Software affected 6.6.3 Not specified
CNA Cisco Cisco Firepower Threat Defense Software affected 6.7.0.1 Not specified
CNA Cisco Cisco Firepower Threat Defense Software affected 6.6.4 Not specified
CNA Cisco Cisco Firepower Threat Defense Software affected 6.4.0.12 Not specified
CNA Cisco Cisco Firepower Threat Defense Software affected 6.7.0.2 Not specified
CNA Cisco Cisco Firepower Threat Defense Software affected 7.0.0 Not specified
CNA Cisco Cisco Firepower Threat Defense Software affected 6.2.3.17 Not specified
CNA Cisco Cisco Firepower Threat Defense Software affected 7.0.0.1 Not specified
CNA Cisco Cisco Firepower Threat Defense Software affected 6.6.5 Not specified
CNA Cisco Cisco Firepower Threat Defense Software affected 6.2.3.18 Not specified
CNA Cisco Cisco Firepower Threat Defense Software affected 6.7.0.3 Not specified
CNA Cisco Cisco UTD SNORT IPS Engine Software affected 3.17.1S Not specified
CNA Cisco Cisco UTD SNORT IPS Engine Software affected 16.12.3 Not specified
CNA Cisco Cisco UTD SNORT IPS Engine Software affected Fuji-16.9.5 Not specified
CNA Cisco Cisco UTD SNORT IPS Engine Software affected 16.12.4 Not specified
CNA Cisco Cisco UTD SNORT IPS Engine Software affected 17.3.1a Not specified
CNA Cisco Cisco UTD SNORT IPS Engine Software affected 16.6.6 Not specified
CNA Cisco Cisco UTD SNORT IPS Engine Software affected 16.12.2 Not specified
CNA Cisco Cisco UTD SNORT IPS Engine Software affected Fuji-16.9.6 Not specified
CNA Cisco Cisco UTD SNORT IPS Engine Software affected 3.17.0S Not specified
CNA Cisco Cisco UTD SNORT IPS Engine Software affected Fuji-16.9.3 Not specified
CNA Cisco Cisco UTD SNORT IPS Engine Software affected Denali-16.3.7 Not specified
CNA Cisco Cisco UTD SNORT IPS Engine Software affected Fuji-16.9.2 Not specified
CNA Cisco Cisco UTD SNORT IPS Engine Software affected Fuji-16.9.4 Not specified
CNA Cisco Cisco UTD SNORT IPS Engine Software affected Everest-16.6.4 Not specified
CNA Cisco Cisco UTD SNORT IPS Engine Software affected Everest-16.6.3 Not specified
CNA Cisco Cisco UTD SNORT IPS Engine Software affected 16.6.5 Not specified
CNA Cisco Cisco UTD SNORT IPS Engine Software affected Denali-16.3.5 Not specified
CNA Cisco Cisco UTD SNORT IPS Engine Software affected 17.2.1r Not specified
CNA Cisco Cisco UTD SNORT IPS Engine Software affected 17.1.1 Not specified
CNA Cisco Cisco UTD SNORT IPS Engine Software affected Everest-16.6.2 Not specified
CNA Cisco Cisco UTD SNORT IPS Engine Software affected 16.6.7a Not specified
CNA Cisco Cisco UTD SNORT IPS Engine Software affected Denali-16.3.4 Not specified
CNA Cisco Cisco UTD SNORT IPS Engine Software affected 16.6.1 Not specified
CNA Cisco Cisco UTD SNORT IPS Engine Software affected Denali-16.3.9 Not specified
CNA Cisco Cisco UTD SNORT IPS Engine Software affected Denali-16.3.3 Not specified
CNA Cisco Cisco UTD SNORT IPS Engine Software affected 16.12.1a Not specified
CNA Cisco Cisco UTD SNORT IPS Engine Software affected 17.3.2 Not specified
CNA Cisco Cisco UTD SNORT IPS Engine Software affected 17.4.1a Not specified
CNA Cisco Cisco UTD SNORT IPS Engine Software affected 16.12.5 Not specified
CNA Cisco Cisco UTD SNORT IPS Engine Software affected 17.5.1 Not specified
CNA Cisco Cisco UTD SNORT IPS Engine Software affected Fuji-16.9.7 Not specified
CNA Cisco Cisco UTD SNORT IPS Engine Software affected 16.6.9 Not specified
CNA Cisco Cisco UTD SNORT IPS Engine Software affected 17.3.3 Not specified
CNA Cisco Cisco UTD SNORT IPS Engine Software affected 17.5.1a Not specified
CNA Cisco Cisco UTD SNORT IPS Engine Software affected 17.3.4 Not specified
CNA Cisco Cisco UTD SNORT IPS Engine Software affected 17.3.4a Not specified
CNA Cisco Cisco UTD SNORT IPS Engine Software affected 17.4.2 Not specified
CNA Cisco Cisco UTD SNORT IPS Engine Software affected 17.4.1b Not specified
CNA Cisco Cisco UTD SNORT IPS Engine Software affected 17.6.1a Not specified
CNA Cisco Cisco UTD SNORT IPS Engine Software affected 16.6.10 Not specified
CNA Cisco Cisco UTD SNORT IPS Engine Software affected 17.7.1a Not specified
CNA Cisco Cisco UTD SNORT IPS Engine Software affected 16.12.6 Not specified
CNA Cisco Cisco UTD SNORT IPS Engine Software affected Fuji-16.9.8 Not specified

References

ReferenceSourceLinkTags
sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-snort-... [email protected] sec.cloudapps.cisco.com Vendor Advisory
sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-sna-xs... [email protected] sec.cloudapps.cisco.com Not Applicable
CVE Program record CVE.ORG www.cve.org canonical
NVD vulnerability detail NVD nvd.nist.gov canonical, analysis

Additional Advisory Data

Exploits

CNA: The Cisco Product Security Incident Response Team (PSIRT) is not aware of any public announcements or malicious use of the vulnerability that is described in this advisory.

Legacy QID Mappings

  • 317167 Firepower Threat Defense (FTD) Software Snort Modbus Denial of Service (DoS) Vulnerability (cisco-sa-snort-dos-9D3hJLuj)

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