A vulnerability in the hybrid access control list (ACL) processing of IPv4 packets in Cisco IOS XR Software could allow an unauthenticated, remote attacker to bypass a configured ACL. This vulnerability is due to incorrect handling of packets when a specific configuration of the hybrid ACL exists. An attacker could exploit this vulnerability by attempting to send traffic through an affected device. A successful exploit could allow the attacker to bypass a configured ACL on the affected device. For more information, see the section of this advisory. Cisco has released software updates that address this vulnerability. There are workarounds that address this vulnerability.
This vulnerability carries a MEDIUM severity rating with a CVSS v3.1 score of 4.0, indicating it can be exploited remotely over the network but requires specific conditions to be met without requiring user interaction and does not require pre-existing privileges . The vulnerability impacts limited integrity, for affected systems. Impacting 39 products from cisco, from cisco, from cisco and 36 others, organizations running these solutions should prioritize assessment and patching.
Reported in 2025, 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.
2025-03-12T16:15:21.890
2025-08-04T12:02:45.527
Analyzed
CVSSv3.1: 4.0 (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 | 6.5.92 | Yes |
| Operating System | cisco | ios_xr | 6.5.93 | 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 | 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 | 7.2.1 | 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 | 7.3.5 | Yes |
| Operating System | cisco | ios_xr | 7.3.6 | 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 |
| Operating System | cisco | ios_xr | 7.5.2 | Yes |
| Operating System | cisco | ios_xr | 7.5.3 | Yes |
| Operating System | cisco | ios_xr | 7.5.4 | Yes |
| Operating System | cisco | ios_xr | 7.5.5 | Yes |
| Operating System | cisco | ios_xr | 7.6.1 | Yes |
| Operating System | cisco | ios_xr | 7.6.2 | Yes |
| Operating System | cisco | ios_xr | 7.7.1 | Yes |
| Operating System | cisco | ios_xr | 7.7.2 | Yes |
| Operating System | cisco | ios_xr | 7.7.21 | Yes |
| Operating System | cisco | ios_xr | 7.8.1 | Yes |
| Operating System | cisco | ios_xr | 7.8.2 | Yes |
| Operating System | cisco | ios_xr | 7.8.22 | Yes |
| Operating System | cisco | ios_xr | 7.9.1 | Yes |
| Operating System | cisco | ios_xr | 7.9.2 | Yes |
| Operating System | cisco | ios_xr | 7.10.1 | Yes |
| Operating System | cisco | ios_xr | 7.10.2 | Yes |
| Operating System | cisco | ios_xr | 7.11.1 | Yes |
| Hardware | cisco | ncs_540-12z20g-sys-a | - | No |
| Hardware | cisco | ncs_540-12z20g-sys-d | - | No |
| Hardware | cisco | ncs_540-24q2c2dd-sys | - | No |
| Hardware | cisco | ncs_540-24q8l2dd-sys | - | No |
| Hardware | cisco | ncs_540-24z8q2c-sys | - | No |
| Hardware | cisco | ncs_540-28z4c-sys-a | - | No |
| Hardware | cisco | ncs_540-28z4c-sys-d | - | No |
| Hardware | cisco | ncs_540-6z14s-sys-d | - | No |
| Hardware | cisco | ncs_540-6z18g-sys-a | - | No |
| Hardware | cisco | ncs_540-6z18g-sys-d | - | No |
| Hardware | cisco | ncs_540-acc-sys | - | No |
| Hardware | cisco | ncs_540-fh-agg | - | No |
| Hardware | cisco | ncs_540-fh-csr-sys | - | No |
| Hardware | cisco | ncs_540x-12z16g-sys-a | - | No |
| Hardware | cisco | ncs_540x-12z16g-sys-d | - | No |
| Hardware | cisco | ncs_540x-16z4g8q2c-a | - | No |
| Hardware | cisco | ncs_540x-16z4g8q2c-d | - | No |
| Hardware | cisco | ncs_540x-16z8q2c-d | - | No |
| Hardware | cisco | ncs_540x-4z14g2q-a | - | No |
| Hardware | cisco | ncs_540x-4z14g2q-d | - | No |
| Hardware | cisco | ncs_540x-6z18g-sys-a | - | No |
| Hardware | cisco | ncs_540x-6z18g-sys-d | - | No |
| Hardware | cisco | ncs_540x-8z16g-sys-a | - | No |
| Hardware | cisco | ncs_540x-8z16g-sys-d | - | No |
| Hardware | cisco | ncs_540x-acc-sys | - | No |
| Hardware | cisco | ncs_5501 | - | No |
| Hardware | cisco | ncs_5501-se | - | No |
| Hardware | cisco | ncs_5502 | - | No |
| Hardware | cisco | ncs_5502-se | - | No |
| Hardware | cisco | ncs_5508 | - | No |
| Hardware | cisco | ncs_5516 | - | No |
| Hardware | cisco | ncs_560-4 | - | No |
| Hardware | cisco | ncs_560-7 | - | No |
| Hardware | cisco | ncs_57b1-5dse-sys | - | No |
| Hardware | cisco | ncs_57b1-6d24-sys | - | No |
| Hardware | cisco | ncs_57c1-48q6-sys | - | No |
| Hardware | cisco | ncs_57c3-mod-sys | - | No |
| Hardware | cisco | ncs_57d2-18dd-sys | - | 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.