CVE-2026-20052Medium· 5.8▾ SunlitA 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. …
▾ Sunlit zone — Low / medium · no exploitation signal
impact 31.9 · likelihood 0.1 · exploitation 0
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Exploit-prediction probability, daily snapshots since Aug 20.
Disclosure to exploitation, from the record and what we observed since indexing it.
Disclosed via NVD
Last analysed / modified upstream
0.4%
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.
secure_firewall_threat_defense = 7.4.0secure_firewall_threat_defense = 7.4.1secure_firewall_threat_defense = 7.4.1.1secure_firewall_threat_defense = 7.4.2secure_firewall_threat_defense = 7.4.2.1secure_firewall_threat_defense = 7.6.0Refer to the linked advisories for vendor-supplied fixes and affected version ranges.
Connected by shared product, vendor, weakness, or advisory.
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