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CVE-2026-20052

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CVE-2026-20052

Published: Mar 4, 2026

Modified: Mar 4, 2026

PUBLISHED

CVSS v3.1

5.8

MEDIUM

Description

A vulnerability in the memory management handling for the Snort 3 Detection Engine of Cisco Secure Firewall Threat Defense (FTD) Software could allow an unauthenticated, remote attacker to cause the Snort 3 Detection Engine to restart. This vulnerability is due to a logic error in memory management when a device is performing Snort 3 SSL packet inspection. An attacker could exploit this vulnerability by sending crafted SSL packets through an established connection to be parsed by the Snort 3 Detection Engine. A successful exploit could allow the attacker to cause a denial of service (DoS) condition when the Snort 3 Detection Engine unexpectedly restarts.

VendorProductVersions

Cisco

Cisco Secure Firewall Threat Defense (FTD) Software

affected
7.4.0
affected
7.4.1
affected
7.4.1.1
affected
7.6.0
affected
7.4.2

+1 more versions

Weaknesses (CWE)

CWE-788

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

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

None

Scope

Changed

Confidentiality

None

Integrity

None

Availability

Low

References

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