CVE-2020-3315
Multiple Cisco products are affected by a vulnerability in the Snort detection engine that could allow an unauthenticated, remote attacker to bypass the configured file policies on an affected system. The vulnerability is due to errors in how the Snort detection engine handles specific HTTP responses. An attacker could exploit this vulnerability by sending crafted HTTP packets that would flow through an affected system. A successful exploit could allow the attacker to bypass the configured file policies and deliver a malicious payload to the protected network.
Published:May 6, 2020
Last Modified:Aug 11, 2026
EPS:May 6, 2020
EPSS Score:0.02156
CVSS Score:5.3
Affected Products
Vendor
Product
Action
Vendor
Cisco
Product
1100-4g Integrated Services Router
Cisco
1100-4g Integrated Services Router
Vendor
Cisco
Product
1100-6g Integrated Services Router
Cisco
1100-6g Integrated Services Router
Vendor
Cisco
Product
1100-lte Integrated Services Router
Cisco
1100-lte Integrated Services Router
Vendor
Cisco
Product
1101 Integrated Services Router
Cisco
1101 Integrated Services Router
Vendor
Cisco
Product
1109 Integrated Services Router
Cisco
1109 Integrated Services Router
Vendor
Cisco
Product
1111x Integrated Services Router
Cisco
1111x Integrated Services Router
Vendor
Cisco
Product
111x Integrated Services Router
Cisco
111x Integrated Services Router
Vendor
Cisco
Product
1120 Integrated Services Router
Cisco
1120 Integrated Services Router
Vendor
Cisco
Product
1160 Integrated Services Router
Cisco
1160 Integrated Services Router
Vendor
Cisco
Product
4221 Integrated Services Router
Cisco
4221 Integrated Services Router
Vendor
Cisco
Product
4331 Integrated Services Router
Cisco
4331 Integrated Services Router
Vendor
Cisco
Product
4431 Integrated Services Router
Cisco
4431 Integrated Services Router
Vendor
Cisco
Product
4461 Integrated Services Router
Cisco
4461 Integrated Services Router
Vendor
Cisco
Product
Csr1000v
Cisco
Csr1000v
Vendor
Cisco
Product
Ios
Cisco
Ios
Vendor
Cisco
Product
Isa-3000-2c2f-k9
Cisco
Isa-3000-2c2f-k9
Vendor
Cisco
Product
Isa-3000-4c-k9
Cisco
Isa-3000-4c-k9
Vendor
Cisco
Product
Secure Firewall Management Center
Cisco
Secure Firewall Management Center
Vendor
Cisco
Product
Secure Firewall Threat Defense
Cisco
Secure Firewall Threat Defense
Exploits
No exploit reference
Common Weakness Enumeration
Common Attack Pattern Enumeration and Classification (CAPEC)
Related CVEs
References
Common Vulnerability Scoring System
Attack Vector
Network
Adjacent
Local
Physical
Privileges Required
None
Low
High
User Interaction
None
Required
Scope
Unchanged
Changed
Confidentiality
None
Low
High
Integrity
None
Low
High
Availability
None
Low
High
