CVE-2020-3179

high Cisco
CVSS v3 Base Score
7.5
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
EPSS Score
1.9%
Exploitation probability in 30 days
Top 22% most likely to be exploited
Attack Characteristics
Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Confidentiality
None
Integrity
None
Availability
High
Published: May 6, 2020 (2314 days ago)
Last Modified: August 11, 2026
Vendor: Cisco
Source: NVD

Description

A vulnerability in the generic routing encapsulation (GRE) tunnel decapsulation feature of Cisco Firepower Threat Defense (FTD) Software could allow an unauthenticated, remote attacker to cause a denial of service (DoS) condition on an affected device. The vulnerability is due to a memory handling error when GRE over IPv6 traffic is processed. An attacker could exploit this vulnerability by sending crafted GRE over IPv6 packets with either IPv4 or IPv6 payload through an affected device. A successful exploit could allow the attacker to cause the device to crash, resulting in a DoS condition.

CWE

CWE-415

Affected Products

cisco secure firewall threat defensecisco asa 5505 firmwarecisco asa 5510 firmwarecisco asa 5512-x firmwarecisco asa 5515-x firmwarecisco asa 5520 firmwarecisco asa 5525-x firmwarecisco asa 5540 firmwarecisco asa 5545-x firmwarecisco asa 5550 firmware

References

🔗 tools.cisco.com 🔗 tools.cisco.com