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CVE-2026-20052

Cisco Secure Firewall Threat Defense Software Snort 3 Memory Management Denial of Service Vulnerability PUBLISHED

Description (CNA)

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.

Affected (CNA)

Vendor / productVersions
Cisco / Cisco Secure Firewall Threat Defense (FTD) Softwareaffected 7.4.0; affected 7.4.1; affected 7.4.1.1; affected 7.6.0; affected 7.4.2; affected 7.4.2.1

CWE

CWE-788

References

ADP enrichment

CISA-ADP

No English description supplied.

No references supplied.