CVE-2026-20026
Published: Jan 7, 2026
Modified: Feb 12, 2026
CVSS v3.1
5.8
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).
| Vendor | Product | Versions |
|---|---|---|
Cisco | Cisco Secure Firewall Threat Defense (FTD) Software | affected 7.0.0affected 7.0.0.1affected 7.0.1affected 7.1.0affected 7.0.1.1+52 more versions |
Cisco | Cisco UTD SNORT IPS Engine Software | affected 3.17.1Saffected 16.12.3affected Fuji-16.9.5affected 16.12.4affected 17.3.1a+98 more versions |
Weaknesses (CWE)
CVSS v3.1 Details
CVSS v3.1 Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:L
Attack Vector
Attack Complexity
Privileges Required
User Interaction
Scope
Confidentiality
Integrity
Availability
References
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