CVE 5.8 MEDIUM

Multiple Cisco Products Snort 3 DCERPC Vulnerabilities_CVE-2026-20026

5.8 / 10
MEDIUM
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:L

Description

Multiple Cisco products are affected by a vulnerability in the processing of DCE/RPC requests that could allow an unauthenticated, remote attacker to cause the Snort 3 Detection Engine to leak sensitive information or to restart, resulting in an interruption of packet inspection.

This vulnerability is due to an error in buffer handling logic when processing DCE/RPC requests, which can result in a buffer use-after-free read. An attacker could exploit this vulnerability by sending a large number of DCE/RPC requests through an established connection that is inspected by Snort 3. A successful exploit could allow the attacker to unexpectedly restart the Snort 3 Detection Engine, which could cause a denial of service (DoS).

Basic Information

ID CVE-2026-20026
Source cisco
Published Jan 7, 2026 at 16:23
Modified Jan 7, 2026 at 16:54

Affected Product

Vendor Cisco
Product Cisco Secure Firewall Threat Defense (FTD) Software
Version 7.0.0
Affected Versions Cisco Cisco Secure Firewall Threat Defense (FTD) Software 7.0.0
Cisco Cisco Secure Firewall Threat Defense (FTD) Software 7.0.0.1
Cisco Cisco Secure Firewall Threat Defense (FTD) Software 7.0.1
Cisco Cisco Secure Firewall Threat Defense (FTD) Software 7.1.0
Cisco Cisco Secure Firewall Threat Defense (FTD) Software 7.0.1.1
Cisco Cisco Secure Firewall Threat Defense (FTD) Software 7.1.0.1
Cisco Cisco Secure Firewall Threat Defense (FTD) Software 7.0.2
Cisco Cisco Secure Firewall Threat Defense (FTD) Software 7.2.0
Cisco Cisco Secure Firewall Threat Defense (FTD) Software 7.0.2.1
Cisco Cisco Secure Firewall Threat Defense (FTD) Software 7.0.3
Cisco Cisco Secure Firewall Threat Defense (FTD) Software 7.1.0.2
Cisco Cisco Secure Firewall Threat Defense (FTD) Software 7.2.0.1
Cisco Cisco Secure Firewall Threat Defense (FTD) Software 7.0.4
Cisco Cisco Secure Firewall Threat Defense (FTD) Software 7.2.1
Cisco Cisco Secure Firewall Threat Defense (FTD) Software 7.0.5
Cisco Cisco Secure Firewall Threat Defense (FTD) Software 7.3.0
Cisco Cisco Secure Firewall Threat Defense (FTD) Software 7.2.2
Cisco Cisco Secure Firewall Threat Defense (FTD) Software 7.2.3
Cisco Cisco Secure Firewall Threat Defense (FTD) Software 7.3.1
Cisco Cisco Secure Firewall Threat Defense (FTD) Software 7.1.0.3
Cisco Cisco Secure Firewall Threat Defense (FTD) Software 7.2.4
Cisco Cisco Secure Firewall Threat Defense (FTD) Software 7.0.6
Cisco Cisco Secure Firewall Threat Defense (FTD) Software 7.2.5
Cisco Cisco Secure Firewall Threat Defense (FTD) Software 7.2.4.1
Cisco Cisco Secure Firewall Threat Defense (FTD) Software 7.3.1.1
Cisco Cisco Secure Firewall Threat Defense (FTD) Software 7.4.0
Cisco Cisco Secure Firewall Threat Defense (FTD) Software 7.0.6.1
Cisco Cisco Secure Firewall Threat Defense (FTD) Software 7.2.5.1
Cisco Cisco Secure Firewall Threat Defense (FTD) Software 7.4.1
Cisco Cisco Secure Firewall Threat Defense (FTD) Software 7.2.6
Cisco Cisco Secure Firewall Threat Defense (FTD) Software 7.0.6.2
Cisco Cisco Secure Firewall Threat Defense (FTD) Software 7.4.1.1
Cisco Cisco Secure Firewall Threat Defense (FTD) Software 7.2.7
Cisco Cisco Secure Firewall Threat Defense (FTD) Software 7.2.5.2
Cisco Cisco Secure Firewall Threat Defense (FTD) Software 7.3.1.2
Cisco Cisco Secure Firewall Threat Defense (FTD) Software 7.2.8
Cisco Cisco Secure Firewall Threat Defense (FTD) Software 7.6.0
Cisco Cisco Secure Firewall Threat Defense (FTD) Software 7.4.2
Cisco Cisco Secure Firewall Threat Defense (FTD) Software 7.2.8.1
Cisco Cisco Secure Firewall Threat Defense (FTD) Software 7.0.6.3
Cisco Cisco Secure Firewall Threat Defense (FTD) Software 7.4.2.1
Cisco Cisco Secure Firewall Threat Defense (FTD) Software 7.2.9
Cisco Cisco Secure Firewall Threat Defense (FTD) Software 7.0.7
Cisco Cisco Secure Firewall Threat Defense (FTD) Software 7.7.0
Cisco Cisco Secure Firewall Threat Defense (FTD) Software 7.4.2.2
Cisco Cisco Secure Firewall Threat Defense (FTD) Software 7.2.10
Cisco Cisco Secure Firewall Threat Defense (FTD) Software 7.6.1
Cisco Cisco Secure Firewall Threat Defense (FTD) Software 7.4.2.3
Cisco Cisco Secure Firewall Threat Defense (FTD) Software 7.0.8
Cisco Cisco Secure Firewall Threat Defense (FTD) Software 7.6.2
Cisco Cisco Secure Firewall Threat Defense (FTD) Software 7.7.10
Cisco Cisco Secure Firewall Threat Defense (FTD) Software 7.0.8.1
Cisco Cisco Secure Firewall Threat Defense (FTD) Software 7.6.2.1
Cisco Cisco Secure Firewall Threat Defense (FTD) Software 7.7.10.1
Cisco Cisco Secure Firewall Threat Defense (FTD) Software 7.4.2.4
Cisco Cisco Secure Firewall Threat Defense (FTD) Software 7.2.10.2
Cisco Cisco Secure Firewall Threat Defense (FTD) Software 7.4.3
Cisco Cisco UTD SNORT IPS Engine Software 3.17.1S
Cisco Cisco UTD SNORT IPS Engine Software 16.12.3
Cisco Cisco UTD SNORT IPS Engine Software Fuji-16.9.5
Cisco Cisco UTD SNORT IPS Engine Software 16.12.4
Cisco Cisco UTD SNORT IPS Engine Software 17.3.1a
Cisco Cisco UTD SNORT IPS Engine Software 16.6.6
Cisco Cisco UTD SNORT IPS Engine Software 16.12.2
Cisco Cisco UTD SNORT IPS Engine Software Fuji-16.9.6
Cisco Cisco UTD SNORT IPS Engine Software 3.17.0S
Cisco Cisco UTD SNORT IPS Engine Software Fuji-16.9.3
Cisco Cisco UTD SNORT IPS Engine Software Denali-16.3.7
Cisco Cisco UTD SNORT IPS Engine Software Fuji-16.9.2
Cisco Cisco UTD SNORT IPS Engine Software Fuji-16.9.4
Cisco Cisco UTD SNORT IPS Engine Software Everest-16.6.4
Cisco Cisco UTD SNORT IPS Engine Software Everest-16.6.3
Cisco Cisco UTD SNORT IPS Engine Software 16.6.5
Cisco Cisco UTD SNORT IPS Engine Software Denali-16.3.5
Cisco Cisco UTD SNORT IPS Engine Software 17.2.1r
Cisco Cisco UTD SNORT IPS Engine Software 17.1.1
Cisco Cisco UTD SNORT IPS Engine Software Everest-16.6.2
Cisco Cisco UTD SNORT IPS Engine Software 16.6.7a
Cisco Cisco UTD SNORT IPS Engine Software Denali-16.3.4
Cisco Cisco UTD SNORT IPS Engine Software 16.6.1
Cisco Cisco UTD SNORT IPS Engine Software Denali-16.3.9
Cisco Cisco UTD SNORT IPS Engine Software Denali-16.3.3
Cisco Cisco UTD SNORT IPS Engine Software 16.12.1a
Cisco Cisco UTD SNORT IPS Engine Software 17.3.2
Cisco Cisco UTD SNORT IPS Engine Software 17.4.1a
Cisco Cisco UTD SNORT IPS Engine Software 16.12.5
Cisco Cisco UTD SNORT IPS Engine Software 17.5.1
Cisco Cisco UTD SNORT IPS Engine Software Fuji-16.9.7
Cisco Cisco UTD SNORT IPS Engine Software 16.6.9
Cisco Cisco UTD SNORT IPS Engine Software 17.3.3
Cisco Cisco UTD SNORT IPS Engine Software 17.5.1a
Cisco Cisco UTD SNORT IPS Engine Software 17.3.4
Cisco Cisco UTD SNORT IPS Engine Software 17.3.4a
Cisco Cisco UTD SNORT IPS Engine Software 17.4.2
Cisco Cisco UTD SNORT IPS Engine Software 17.4.1b
Cisco Cisco UTD SNORT IPS Engine Software 17.6.1a
Cisco Cisco UTD SNORT IPS Engine Software 16.6.10
Cisco Cisco UTD SNORT IPS Engine Software 17.7.1a
Cisco Cisco UTD SNORT IPS Engine Software 16.12.6
Cisco Cisco UTD SNORT IPS Engine Software Fuji-16.9.8
Cisco Cisco UTD SNORT IPS Engine Software 17.6.2
Cisco Cisco UTD SNORT IPS Engine Software 17.8.1a
Cisco Cisco UTD SNORT IPS Engine Software 16.12.7
Cisco Cisco UTD SNORT IPS Engine Software 17.3.5
Cisco Cisco UTD SNORT IPS Engine Software 17.6.3
Cisco Cisco UTD SNORT IPS Engine Software 17.6.3a
Cisco Cisco UTD SNORT IPS Engine Software 17.7.2
Cisco Cisco UTD SNORT IPS Engine Software 17.9.1a
Cisco Cisco UTD SNORT IPS Engine Software 17.6.4
Cisco Cisco UTD SNORT IPS Engine Software 17.10.1a
Cisco Cisco UTD SNORT IPS Engine Software 17.3.6
Cisco Cisco UTD SNORT IPS Engine Software 16.12.8
Cisco Cisco UTD SNORT IPS Engine Software 17.3.7
Cisco Cisco UTD SNORT IPS Engine Software 17.9.2a
Cisco Cisco UTD SNORT IPS Engine Software 17.6.5
Cisco Cisco UTD SNORT IPS Engine Software 17.11.1a
Cisco Cisco UTD SNORT IPS Engine Software 17.9.3a
Cisco Cisco UTD SNORT IPS Engine Software 17.12.1a
Cisco Cisco UTD SNORT IPS Engine Software 17.9.4
Cisco Cisco UTD SNORT IPS Engine Software 17.6.6
Cisco Cisco UTD SNORT IPS Engine Software 17.3.8
Cisco Cisco UTD SNORT IPS Engine Software 17.3.8a
Cisco Cisco UTD SNORT IPS Engine Software 17.6.6a
Cisco Cisco UTD SNORT IPS Engine Software 17.9.4a
Cisco Cisco UTD SNORT IPS Engine Software 17.12.2
Cisco Cisco UTD SNORT IPS Engine Software 17.13.1a
Cisco Cisco UTD SNORT IPS Engine Software 17.9.5a
Cisco Cisco UTD SNORT IPS Engine Software 17.12.3
Cisco Cisco UTD SNORT IPS Engine Software 17.6.7
Cisco Cisco UTD SNORT IPS Engine Software 17.14.1a
Cisco Cisco UTD SNORT IPS Engine Software 17.12.4
Cisco Cisco UTD SNORT IPS Engine Software 17.12.3a
Cisco Cisco UTD SNORT IPS Engine Software 17.15.1a
Cisco Cisco UTD SNORT IPS Engine Software 17.6.8
Cisco Cisco UTD SNORT IPS Engine Software 17.9.6
Cisco Cisco UTD SNORT IPS Engine Software 17.6.8a
Cisco Cisco UTD SNORT IPS Engine Software 17.16.1a
Cisco Cisco UTD SNORT IPS Engine Software 17.9.5e
Cisco Cisco UTD SNORT IPS Engine Software 17.12.4a
Cisco Cisco UTD SNORT IPS Engine Software 17.15.2c
Cisco Cisco UTD SNORT IPS Engine Software 17.9.5f
Cisco Cisco UTD SNORT IPS Engine Software 17.12.4b
Cisco Cisco UTD SNORT IPS Engine Software 17.15.2a
Cisco Cisco UTD SNORT IPS Engine Software 17.12.5
Cisco Cisco UTD SNORT IPS Engine Software 17.17.1
Cisco Cisco UTD SNORT IPS Engine Software 17.12.5a
Cisco Cisco UTD SNORT IPS Engine Software 17.9.7a
Cisco Cisco UTD SNORT IPS Engine Software 17.15.3a
Cisco Cisco UTD SNORT IPS Engine Software 17.15.3
Cisco Cisco UTD SNORT IPS Engine Software 17.12.5b
Cisco Cisco UTD SNORT IPS Engine Software 17.12.5c
Cisco Cisco UTD SNORT IPS Engine Software 17.15.4
Cisco Cisco UTD SNORT IPS Engine Software 17.9.7b
Cisco Cisco UTD SNORT IPS Engine Software 17.18.1
Cisco Cisco UTD SNORT IPS Engine Software 17.18.1a
Cisco Cisco UTD SNORT IPS Engine Software 17.12.6
Cisco Cisco UTD SNORT IPS Engine Software 17.9.8
Cisco Cisco UTD SNORT IPS Engine Software 17.15.4c
Cisco Cisco UTD SNORT IPS Engine Software 17.12.5d
Cisco Cisco UTD SNORT IPS Engine Software 17.18.2

References

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