CVE-2026-20053Medium· 5.8▾ SunlitMultiple Cisco products are affected by a vulnerability in the Snort 3 VBA feature that could allow an unauthenticated, remote attacker to cause the Snort 3 Detection Engine to crash. This vulnerability is due to improper range checki…
▾ 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%
Multiple Cisco products are affected by a vulnerability in the Snort 3 VBA feature that could allow an unauthenticated, remote attacker to cause the Snort 3 Detection Engine to crash.
This vulnerability is due to improper range checking when decompressing VBA data, which is user controlled. An attacker could exploit this vulnerability by sending crafted VBA data to the Snort 3 Detection Engine on the targeted device. A successful exploit could allow the attacker to cause an overflow of heap data, which could cause a DoS condition.
snort >= 3.0.0-233, < 3.9.3.0cyber_vision = 3.0.0cyber_vision = 3.0.1cyber_vision = 3.0.2cyber_vision = 3.0.3cyber_vision = 3.0.4cyber_vision = 3.0.5cyber_vision = 3.0.6cyber_vision = 3.1.0cyber_vision = 3.1.1cyber_vision = 3.1.2cyber_vision = 3.2.0cyber_vision = 3.2.1cyber_vision = 3.2.2cyber_vision = 3.2.3cyber_vision = 3.2.4cyber_vision = 4.0.0cyber_vision = 4.0.1cyber_vision = 4.0.2cyber_vision = 4.0.3cyber_vision = 4.1.0cyber_vision = 4.1.1cyber_vision = 4.1.2cyber_vision = 4.1.3cyber_vision = 4.1.4cyber_vision = 4.1.5cyber_vision = 4.1.6cyber_vision = 4.1.7cyber_vision = 4.2.0cyber_vision = 4.2.1cyber_vision = 4.2.2cyber_vision = 4.2.3cyber_vision = 4.2.4cyber_vision = 4.2.6cyber_vision = 4.3.0cyber_vision = 4.3.1cyber_vision = 4.3.2cyber_vision = 4.3.3cyber_vision = 4.4.0cyber_vision = 4.4.1cyber_vision = 4.4.2cyber_vision = 4.4.3cyber_vision = 5.0.0cyber_vision = 5.0.1cyber_vision = 5.0.2cyber_vision = 5.1.0cyber_vision = 5.1.1cyber_vision = 5.1.2cyber_vision = 5.1.3cyber_vision = 5.2.0cyber_vision = 5.2.1cyber_vision = 5.3.0cyber_vision = 5.3.1cyber_vision = 5.3.2secure_firewall_threat_defense = 7.2.0secure_firewall_threat_defense = 7.2.0.1secure_firewall_threat_defense = 7.2.1secure_firewall_threat_defense = 7.2.2secure_firewall_threat_defense = 7.2.3secure_firewall_threat_defense = 7.2.4secure_firewall_threat_defense = 7.2.4.1secure_firewall_threat_defense = 7.2.5secure_firewall_threat_defense = 7.2.5.1secure_firewall_threat_defense = 7.2.5.2secure_firewall_threat_defense = 7.2.6secure_firewall_threat_defense = 7.2.7secure_firewall_threat_defense = 7.2.8secure_firewall_threat_defense = 7.2.8.1secure_firewall_threat_defense = 7.2.9secure_firewall_threat_defense = 7.2.10secure_firewall_threat_defense = 7.2.10.2secure_firewall_threat_defense = 7.3.0secure_firewall_threat_defense = 7.3.1secure_firewall_threat_defense = 7.3.1.1secure_firewall_threat_defense = 7.3.1.2secure_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 = 7.4.2.2secure_firewall_threat_defense = 7.4.2.3secure_firewall_threat_defense = 7.4.2.4secure_firewall_threat_defense = 7.4.3secure_firewall_threat_defense = 7.6.0secure_firewall_threat_defense = 7.6.1secure_firewall_threat_defense = 7.6.2secure_firewall_threat_defense = 7.6.2.1secure_firewall_threat_defense = 7.7.0secure_firewall_threat_defense = 7.7.10secure_firewall_threat_defense = 7.7.10.1unified_threat_defense_snort_intrusion_prevention_system_engine = 17.9.4unified_threat_defense_snort_intrusion_prevention_system_engine = 17.9.5eunified_threat_defense_snort_intrusion_prevention_system_engine = 17.12.1aunified_threat_defense_snort_intrusion_prevention_system_engine = 17.12.2unified_threat_defense_snort_intrusion_prevention_system_engine = 17.12.3unified_threat_defense_snort_intrusion_prevention_system_engine = 17.12.3aunified_threat_defense_snort_intrusion_prevention_system_engine = 17.12.4unified_threat_defense_snort_intrusion_prevention_system_engine = 17.12.4aunified_threat_defense_snort_intrusion_prevention_system_engine = 17.12.4bUpgrade past the affected range:
snort 3.9.3.0Connected by shared product, vendor, weakness, or advisory.
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