A vulnerability in the Broadband Network Gateway PPP over Ethernet (PPPoE) feature of Cisco IOS XR Software could allow an unauthenticated, adjacent attacker to cause the PPPoE process to continually crash. This vulnerability exists because the PPPoE feature does not properly handle an error condition within a specific crafted packet sequence. An attacker could exploit this vulnerability by sending a sequence of specific PPPoE packets from controlled customer premises equipment (CPE). A successful exploit could allow the attacker to cause the PPPoE process to continually restart, resulting in a denial of service condition (DoS).Cisco has released software updates that address this vulnerability. There are no workarounds that address this vulnerability.This advisory is part of the September 2022 release of the Cisco IOS XR Software Security Advisory Bundled Publication. For a complete list of the advisories and links to them, see .
This vulnerability carries a MEDIUM severity rating with a CVSS v3.1 score of 6.1, indicating it requires adjacent network access but requires specific conditions to be met without requiring user interaction and does not require pre-existing privileges . The vulnerability impacts and availability (service disruption) for affected systems. Impacting 12 products from cisco, from cisco, from cisco and 9 others, organizations running these solutions should prioritize assessment and patching.
Reported in 2024, 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.
2024-11-15T16:15:23.327
2025-08-01T18:27:12.177
Analyzed
CVSSv3.1: 6.1 (MEDIUM)
| Type | Vendor | Product | Version/Range | Vulnerable? |
|---|---|---|---|---|
| Operating System | cisco | ios_xr | 6.5.1 | Yes |
| Operating System | cisco | ios_xr | 6.5.2 | Yes |
| Operating System | cisco | ios_xr | 6.5.3 | Yes |
| Operating System | cisco | ios_xr | 6.5.15 | Yes |
| Operating System | cisco | ios_xr | 6.6.1 | Yes |
| Operating System | cisco | ios_xr | 6.6.2 | Yes |
| Operating System | cisco | ios_xr | 6.6.3 | Yes |
| Operating System | cisco | ios_xr | 6.6.4 | Yes |
| Operating System | cisco | ios_xr | 6.6.25 | Yes |
| Operating System | cisco | ios_xr | 6.7.1 | Yes |
| Operating System | cisco | ios_xr | 6.7.2 | Yes |
| Operating System | cisco | ios_xr | 6.7.3 | Yes |
| Operating System | cisco | ios_xr | 6.7.35 | Yes |
| Operating System | cisco | ios_xr | 6.8.1 | Yes |
| Operating System | cisco | ios_xr | 6.8.2 | Yes |
| Operating System | cisco | ios_xr | 6.9.1 | Yes |
| Operating System | cisco | ios_xr | 7.0.1 | Yes |
| Operating System | cisco | ios_xr | 7.0.2 | Yes |
| Operating System | cisco | ios_xr | 7.0.90 | Yes |
| Operating System | cisco | ios_xr | 7.1.1 | Yes |
| Operating System | cisco | ios_xr | 7.1.2 | Yes |
| Operating System | cisco | ios_xr | 7.1.3 | Yes |
| Operating System | cisco | ios_xr | 7.1.15 | Yes |
| Operating System | cisco | ios_xr | 7.1.25 | Yes |
| Operating System | cisco | ios_xr | 7.2.1 | Yes |
| Operating System | cisco | ios_xr | 7.2.2 | Yes |
| Operating System | cisco | ios_xr | 7.3.1 | Yes |
| Operating System | cisco | ios_xr | 7.3.2 | Yes |
| Operating System | cisco | ios_xr | 7.3.3 | Yes |
| Operating System | cisco | ios_xr | 7.3.4 | Yes |
| Operating System | cisco | ios_xr | 7.4.1 | Yes |
| Operating System | cisco | ios_xr | 7.4.2 | Yes |
| Operating System | cisco | ios_xr | 7.5.1 | Yes |
| Hardware | cisco | asr_9006 | - | No |
| Hardware | cisco | asr_9010 | - | No |
| Hardware | cisco | asr_9901 | - | No |
| Hardware | cisco | asr_9902 | - | No |
| Hardware | cisco | asr_9903 | - | No |
| Hardware | cisco | asr_9904 | - | No |
| Hardware | cisco | asr_9906 | - | No |
| Hardware | cisco | asr_9910 | - | No |
| Hardware | cisco | asr_9912 | - | No |
| Hardware | cisco | asr_9922 | - | No |
| Hardware | cisco | ios_xrv_9000 | - | 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.