Multiple vulnerabilities in the implementation of Border Gateway Protocol (BGP) Ethernet VPN (EVPN) functionality in Cisco IOS XR Software could allow an unauthenticated, remote attacker to cause a denial of service (DoS) condition. The vulnerabilities are due to incorrect processing of BGP update messages that contain crafted EVPN attributes. An attacker could exploit these vulnerabilities by sending BGP EVPN update messages with malformed attributes to be processed by an affected system. A successful exploit could allow the attacker to cause the BGP process to restart unexpectedly, resulting in a DoS condition. The Cisco implementation of BGP accepts incoming BGP traffic only from explicitly defined peers. To exploit these vulnerabilities, the malicious BGP update message would need to come from a configured, valid BGP peer, or would need to be injected by the attacker into the victim's BGP network on an existing, valid TCP connection to a BGP peer.
This vulnerability carries a HIGH severity rating with a CVSS v3.1 score of 8.6, indicating it can be exploited remotely over the network with relatively low complexity without requiring user interaction and does not require pre-existing privileges . The vulnerability impacts and availability (service disruption) for affected systems. Impacting 20 products from cisco, from cisco, from cisco and 17 others, organizations running these solutions should prioritize assessment and patching.
Reported in 2020, this vulnerability emerged during an era marked by increased sophistication in supply chain attacks, cloud infrastructure vulnerabilities, and software-as-a-service (SaaS) security challenges. Security practices during this period emphasized zero-trust architectures, container security, and API protection.
2020-09-23T01:15:13.847
2024-11-21T04:29:56.263
Modified
CVSSv3.1: 8.6 (HIGH)
AV:N/AC:L/Au:N/C:N/I:N/A:P
10.0
2.9
| Type | Vendor | Product | Version/Range | Vulnerable? |
|---|---|---|---|---|
| Operating System | cisco | ios_xr | 6.6.1 | Yes |
| Hardware | cisco | asr_9000 | - | No |
| Hardware | cisco | asr_9010 | - | No |
| Hardware | cisco | asr_9904 | - | No |
| Hardware | cisco | asr_9910 | - | No |
| Hardware | cisco | asr_9912 | - | No |
| Hardware | cisco | asr_9922 | - | No |
| Hardware | cisco | ncs_540 | - | No |
| Hardware | cisco | ncs_5500 | - | No |
| Hardware | cisco | ncs_6000 | - | No |
| Operating System | cisco | ios_xr | 6.6.2 | Yes |
| Hardware | cisco | asr_9000 | - | No |
| Hardware | cisco | asr_9000 | - | No |
| Hardware | cisco | asr_9010 | - | No |
| Hardware | cisco | asr_9010 | - | No |
| Hardware | cisco | asr_9904 | - | No |
| Hardware | cisco | asr_9904 | - | No |
| Hardware | cisco | asr_9910 | - | No |
| Hardware | cisco | asr_9910 | - | No |
| Hardware | cisco | asr_9912 | - | No |
| Hardware | cisco | asr_9912 | - | No |
| Hardware | cisco | asr_9922 | - | No |
| Hardware | cisco | asr_9922 | - | No |
| Hardware | cisco | carrier_routing_system | - | No |
| Hardware | cisco | ios_xrv_9000 | - | No |
| Hardware | cisco | ncs_5001 | - | No |
| Hardware | cisco | ncs_5002 | - | No |
| Hardware | cisco | ncs_5011 | - | No |
| Hardware | cisco | ncs_540 | - | No |
| Hardware | cisco | ncs_5500 | - | No |
| Hardware | cisco | ncs_6000 | - | No |
| Operating System | cisco | ios_xr | 6.6.25 | Yes |
| Hardware | cisco | ncs_540 | - | No |
| Hardware | cisco | ncs_540l | - | No |
| Hardware | cisco | ncs_5500 | - | No |
| Hardware | cisco | ncs_560 | - | No |
| Operating System | cisco | ios_xr | 7.0.1 | Yes |
| Hardware | cisco | asr_9000 | - | No |
| Hardware | cisco | asr_9010 | - | No |
| Hardware | cisco | asr_9904 | - | No |
| Hardware | cisco | asr_9910 | - | No |
| Hardware | cisco | asr_9912 | - | No |
| Hardware | cisco | asr_9922 | - | No |
| Hardware | cisco | ios_xrv_9000 | - | No |
| Hardware | cisco | ncs_1001 | - | No |
| Hardware | cisco | ncs_1002 | - | No |
| Hardware | cisco | ncs_1004 | - | No |
| Hardware | cisco | ncs_5001 | - | No |
| Hardware | cisco | ncs_5002 | - | No |
| Hardware | cisco | ncs_5011 | - | No |
| Hardware | cisco | ncs_540 | - | No |
| Hardware | cisco | ncs_540l | - | No |
| Hardware | cisco | ncs_5500 | - | No |
| Hardware | cisco | ncs_560 | - | No |
| Hardware | cisco | ncs_6000 | - | No |
SecUtils normalizes and enriches National Vulnerability Database (NVD) records by standardizing vendor and product identifiers, aggregating vulnerability metadata from both NVD and MITRE sources, and providing structured context for security teams. For cisco's affected products, we extract Common Platform Enumeration (CPE) data, Common Weakness Enumeration (CWE) classifications, CVSS severity metrics, and reference data to enable rapid vulnerability prioritization and asset correlation. This record contains no exploit code, proof-of-concept instructions, or attack methodologies—only defensive intelligence necessary for patch management, risk assessment, and security operations.