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Multiple Cisco Products Snort 3 Distributed Computing Environment/Remote Procedure Call Vulnerabilities

cisco-sa-snort3-dcerpc-vulns-J9HNF4tH · Medium · Published · Updated

Multiple Cisco products are affected by vulnerabilities in the processing of Distributed Computing Environment Remote Procedure Call (DCE/RPC) requests that could allow an unauthenticated, remote attacker to cause the Snort 3 Detection Engine to leak sensitive information or to restart, which would result in an interruption of packet inspection. For more information about these vulnerabilities, see the Details section of this advisory. Cisco has released software updates that address these vulnerabilities. There are workarounds that address these vulnerabilities. This advisory is available at the following link:https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-snort3-dcerpc-vulns-J9HNF4tH

Cisco advisory ·CSAF JSON

Workarounds

There are no workarounds that address these vulnerabilities.

CVEsCVE-2026-20026, CVE-2026-20027
Cisco Bug IDsCSCwq75339, CSCwr21376, CSCwq75359, CSCwr21389
CVSS ScoreBase 5.8
Base 5.8 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:L/E:X/RL:X/RC:X
Base 5.3 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N/E:X/RL:X/RC:X
Product Names From Source
Cisco UTD SNORT IPS Engine Software, Cisco Secure Firewall Threat Defense (FTD) Software 7.0.0, Cisco Secure Firewall Threat Defense (FTD) Software 7.0.0.1, Cisco Secure Firewall Threat Defense (FTD) Software 7.0.1, Cisco Secure Firewall Threat Defense (FTD) Software 7.0.1.1, Cisco Secure Firewall Threat Defense (FTD) Software 7.0.2, Cisco Secure Firewall Threat Defense (FTD) Software 7.0.2.1, Cisco Secure Firewall Threat Defense (FTD) Software 7.0.3, Cisco Secure Firewall Threat Defense (FTD) Software 7.0.4, Cisco Secure Firewall Threat Defense (FTD) Software 7.0.5, Cisco Secure Firewall Threat Defense (FTD) Software 7.0.6, Cisco Secure Firewall Threat Defense (FTD) Software 7.0.6.1, Cisco Secure Firewall Threat Defense (FTD) Software 7.0.6.2, Cisco Secure Firewall Threat Defense (FTD) Software 7.0.6.3, Cisco Secure Firewall Threat Defense (FTD) Software 7.0.7, Cisco Secure Firewall Threat Defense (FTD) Software 7.0.8, Cisco Secure Firewall Threat Defense (FTD) Software 7.0.8.1, Cisco Secure Firewall Threat Defense (FTD) Software 7.1.0, Cisco Secure Firewall Threat Defense (FTD) Software 7.1.0.1, Cisco Secure Firewall Threat Defense (FTD) Software 7.1.0.2, Cisco Secure Firewall Threat Defense (FTD) Software 7.1.0.3, Cisco Secure Firewall Threat Defense (FTD) Software 7.2.0, Cisco Secure Firewall Threat Defense (FTD) Software 7.2.0.1, Cisco Secure Firewall Threat Defense (FTD) Software 7.2.1, Cisco Secure Firewall Threat Defense (FTD) Software 7.2.2, Cisco Secure Firewall Threat Defense (FTD) Software 7.2.3, Cisco Secure Firewall Threat Defense (FTD) Software 7.2.4, Cisco Secure Firewall Threat Defense (FTD) Software 7.2.4.1, Cisco Secure Firewall Threat Defense (FTD) Software 7.2.5, Cisco Secure Firewall Threat Defense (FTD) Software 7.2.5.1, Cisco Secure Firewall Threat Defense (FTD) Software 7.2.6, Cisco Secure Firewall Threat Defense (FTD) Software 7.2.7, Cisco Secure Firewall Threat Defense (FTD) Software 7.2.5.2, Cisco Secure Firewall Threat Defense (FTD) Software 7.2.8, Cisco Secure Firewall Threat Defense (FTD) Software 7.2.8.1, Cisco Secure Firewall Threat Defense (FTD) Software 7.2.9, Cisco Secure Firewall Threat Defense (FTD) Software 7.2.10, Cisco Secure Firewall Threat Defense (FTD) Software 7.2.10.2, Cisco Secure Firewall Threat Defense (FTD) Software 7.3.0, Cisco Secure Firewall Threat Defense (FTD) Software 7.3.1, Cisco Secure Firewall Threat Defense (FTD) Software 7.3.1.1, Cisco Secure Firewall Threat Defense (FTD) Software 7.3.1.2, Cisco Secure Firewall Threat Defense (FTD) Software 7.4.0, Cisco Secure Firewall Threat Defense (FTD) Software 7.4.1, Cisco Secure Firewall Threat Defense (FTD) Software 7.4.1.1, Cisco Secure Firewall Threat Defense (FTD) Software 7.4.2, Cisco Secure Firewall Threat Defense (FTD) Software 7.4.2.1, Cisco Secure Firewall Threat Defense (FTD) Software 7.4.2.2, Cisco Secure Firewall Threat Defense (FTD) Software 7.4.2.3, Cisco Secure Firewall Threat Defense (FTD) Software 7.4.2.4, Cisco Secure Firewall Threat Defense (FTD) Software 7.4.3, Cisco Secure Firewall Threat Defense (FTD) Software 7.6.0, Cisco Secure Firewall Threat Defense (FTD) Software 7.6.1, Cisco Secure Firewall Threat Defense (FTD) Software 7.6.2, Cisco Secure Firewall Threat Defense (FTD) Software 7.6.2.1, Cisco Secure Firewall Threat Defense (FTD) Software 7.7.0, Cisco Secure Firewall Threat Defense (FTD) Software 7.7.10, Cisco Secure Firewall Threat Defense (FTD) Software 7.7.10.1, Cisco Secure Firewall Threat Defense (FTD) Software, Cisco Firepower 2100 Series, Cisco Firepower 1000 Series, Cisco ASA 5500-X Series Firewalls, Cisco 3000 Series Industrial Security Appliances (ISA), Cisco Firepower 9000 Series, Cisco Firepower 4100 Series, Cisco Secure Firewall Threat Defense Virtual, Cisco Secure Firewall 3100 Series, Cisco Secure Firewall 4200 Series, Cisco Secure Firewall 1200 Series

CSAF Product Statuses

Product Status Source CVE Rows
Cisco Secure Firewall Threat Defense (FTD) Software 7.0.0 when installed on Cisco 3000 Series Industrial Security Appliances (ISA) known_affected cisco_csaf CVE-2026-20026, CVE-2026-20027 2
Cisco Secure Firewall Threat Defense (FTD) Software 7.0.0 when installed on Cisco ASA 5500-X Series Firewalls known_affected cisco_csaf CVE-2026-20026, CVE-2026-20027 2
Cisco Secure Firewall Threat Defense (FTD) Software 7.0.0 when installed on Cisco Firepower 1000 Series known_affected cisco_csaf CVE-2026-20026, CVE-2026-20027 2
Cisco Secure Firewall Threat Defense (FTD) Software 7.0.0 when installed on Cisco Firepower 2100 Series known_affected cisco_csaf CVE-2026-20026, CVE-2026-20027 2
Cisco Secure Firewall Threat Defense (FTD) Software 7.0.0 when installed on Cisco Firepower 4100 Series known_affected cisco_csaf CVE-2026-20026, CVE-2026-20027 2
Cisco Secure Firewall Threat Defense (FTD) Software 7.0.0 when installed on Cisco Firepower 9000 Series known_affected cisco_csaf CVE-2026-20026, CVE-2026-20027 2
Cisco Secure Firewall Threat Defense (FTD) Software 7.0.0 when installed on Cisco Secure Firewall Threat Defense Virtual known_affected cisco_csaf CVE-2026-20026, CVE-2026-20027 2
Cisco Secure Firewall Threat Defense (FTD) Software 7.0.0.1 when installed on Cisco 3000 Series Industrial Security Appliances (ISA) known_affected cisco_csaf CVE-2026-20026, CVE-2026-20027 2
Cisco Secure Firewall Threat Defense (FTD) Software 7.0.0.1 when installed on Cisco ASA 5500-X Series Firewalls known_affected cisco_csaf CVE-2026-20026, CVE-2026-20027 2
Cisco Secure Firewall Threat Defense (FTD) Software 7.0.0.1 when installed on Cisco Firepower 1000 Series known_affected cisco_csaf CVE-2026-20026, CVE-2026-20027 2
Cisco Secure Firewall Threat Defense (FTD) Software 7.0.0.1 when installed on Cisco Firepower 2100 Series known_affected cisco_csaf CVE-2026-20026, CVE-2026-20027 2
Cisco Secure Firewall Threat Defense (FTD) Software 7.0.0.1 when installed on Cisco Firepower 4100 Series known_affected cisco_csaf CVE-2026-20026, CVE-2026-20027 2

Showing 12 of 402 CSAF status groups; 390 more not shown.

Related Products

Product CVE Evidence
Cisco Secure Firewall Threat Defense (FTD) Software CVE-2026-20026 Cisco OpenVuln
Cisco UTD SNORT IPS Engine Software CVE-2026-20026 Cisco OpenVuln
Cisco Firepower 2100 Series CVE-2026-20026 Cisco OpenVuln · family-level
Cisco Firepower 1000 Series CVE-2026-20026 Cisco OpenVuln · family-level
Cisco ASA 5500-X Series Firewalls CVE-2026-20026 Cisco OpenVuln · family-level
Cisco 3000 Series Industrial Security Appliances (ISA) CVE-2026-20026 Cisco OpenVuln · family-level
Cisco Firepower 9000 Series CVE-2026-20026 Cisco OpenVuln · family-level
Cisco Firepower 4100 Series CVE-2026-20026 Cisco OpenVuln · family-level
Cisco Secure Firewall 3100 Series CVE-2026-20026 Cisco OpenVuln · family-level
Cisco Secure Firewall 4200 Series CVE-2026-20026 Cisco OpenVuln · family-level
Cisco Secure Firewall 1200 Series CVE-2026-20026 Cisco OpenVuln · family-level
Cisco Secure Firewall Threat Defense Virtual CVE-2026-20026 Cisco OpenVuln
Cisco Adaptive Security Appliance (ASA) Software CVE-2026-20026 Cisco OpenVuln
Cisco Firepower Threat Defense Software CVE-2026-20026 Cisco OpenVuln
Cisco 3000 Series Routers CVE-2026-20026 Cisco OpenVuln
Cisco Secure Firewall Threat Defense (FTD) Software CVE-2026-20027 Cisco OpenVuln
Cisco UTD SNORT IPS Engine Software CVE-2026-20027 Cisco OpenVuln
Cisco Firepower 2100 Series CVE-2026-20027 Cisco OpenVuln · family-level
Cisco Firepower 1000 Series CVE-2026-20027 Cisco OpenVuln · family-level
Cisco ASA 5500-X Series Firewalls CVE-2026-20027 Cisco OpenVuln · family-level
Cisco 3000 Series Industrial Security Appliances (ISA) CVE-2026-20027 Cisco OpenVuln · family-level
Cisco Firepower 9000 Series CVE-2026-20027 Cisco OpenVuln · family-level
Cisco Firepower 4100 Series CVE-2026-20027 Cisco OpenVuln · family-level
Cisco Secure Firewall 3100 Series CVE-2026-20027 Cisco OpenVuln · family-level
Cisco Secure Firewall 4200 Series CVE-2026-20027 Cisco OpenVuln · family-level
Cisco Secure Firewall 1200 Series CVE-2026-20027 Cisco OpenVuln · family-level
Cisco Secure Firewall Threat Defense Virtual CVE-2026-20027 Cisco OpenVuln
Cisco Adaptive Security Appliance (ASA) Software CVE-2026-20027 Cisco OpenVuln
Cisco Firepower Threat Defense Software CVE-2026-20027 Cisco OpenVuln
Cisco 3000 Series Routers CVE-2026-20027 Cisco OpenVuln