An Improper Check for Unusual or Exceptional Conditions vulnerability in the routing protocol daemon (rpd) of Juniper Networks Junos OS and Junos OS Evolved allows an unauthenticated, network-based attacker to cause an availability impact for downstream devices. When an affected device receives a specific optional, transitive BGP attribute over an existing BGP session, it will be erroneously modified before propagation to peers. When the attribute is detected as malformed by the peers, these peers will most likely terminate the BGP sessions with the affected devices and thereby cause an availability impact due to the resulting routing churn. This issue affects: Junos OS: * all versions before 22.4R3-S8, * 23.2 versions before 23.2R2-S5 * 23.4 versions before 23.4R2-S6, * 24.2 versions before 24.2R2-S2, * 24.4 versions before 24.4R2; Junos OS Evolved:Â * all versions before 22.4R3-S8-EVO, * 23.2 versions before 23.2R2-S5-EVO, * 23.4 versions before 23.4R2-S6-EVO, * 24.2 versions before 24.2R2-S2-EVO, * 24.4 versions before 24.4R2-EVO.
This vulnerability carries a MEDIUM severity rating with a CVSS v3.1 score of 5.8, 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 limited availability for affected systems. Impacting 2 products from juniper, from juniper organizations running these solutions should prioritize assessment and patching.
Reported in 2026, 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.
2026-01-15T21:16:03.950
2026-01-23T19:39:45.920
Analyzed
CVSSv3.1: 5.8 (MEDIUM)
| Type | Vendor | Product | Version/Range | Vulnerable? |
|---|---|---|---|---|
| Operating System | juniper | junos | < 22.4 | Yes |
| Operating System | juniper | junos | 22.4 | Yes |
| Operating System | juniper | junos | 22.4 | Yes |
| Operating System | juniper | junos | 22.4 | Yes |
| Operating System | juniper | junos | 22.4 | Yes |
| Operating System | juniper | junos | 22.4 | Yes |
| Operating System | juniper | junos | 22.4 | Yes |
| Operating System | juniper | junos | 22.4 | Yes |
| Operating System | juniper | junos | 22.4 | Yes |
| Operating System | juniper | junos | 22.4 | Yes |
| Operating System | juniper | junos | 22.4 | Yes |
| Operating System | juniper | junos | 22.4 | Yes |
| Operating System | juniper | junos | 22.4 | Yes |
| Operating System | juniper | junos | 22.4 | Yes |
| Operating System | juniper | junos | 22.4 | Yes |
| Operating System | juniper | junos | 22.4 | Yes |
| Operating System | juniper | junos | 23.2 | Yes |
| Operating System | juniper | junos | 23.2 | Yes |
| Operating System | juniper | junos | 23.2 | Yes |
| Operating System | juniper | junos | 23.2 | Yes |
| Operating System | juniper | junos | 23.2 | Yes |
| Operating System | juniper | junos | 23.2 | Yes |
| Operating System | juniper | junos | 23.2 | Yes |
| Operating System | juniper | junos | 23.2 | Yes |
| Operating System | juniper | junos | 23.2 | Yes |
| Operating System | juniper | junos | 23.4 | Yes |
| Operating System | juniper | junos | 23.4 | Yes |
| Operating System | juniper | junos | 23.4 | Yes |
| Operating System | juniper | junos | 23.4 | Yes |
| Operating System | juniper | junos | 23.4 | Yes |
| Operating System | juniper | junos | 23.4 | Yes |
| Operating System | juniper | junos | 23.4 | Yes |
| Operating System | juniper | junos | 23.4 | Yes |
| Operating System | juniper | junos | 23.4 | Yes |
| Operating System | juniper | junos | 23.4 | Yes |
| Operating System | juniper | junos | 24.2 | Yes |
| Operating System | juniper | junos | 24.2 | Yes |
| Operating System | juniper | junos | 24.2 | Yes |
| Operating System | juniper | junos | 24.2 | Yes |
| Operating System | juniper | junos | 24.2 | Yes |
| Operating System | juniper | junos | 24.2 | Yes |
| Operating System | juniper | junos | 24.4 | Yes |
| Operating System | juniper | junos | 24.4 | Yes |
| Operating System | juniper | junos | 24.4 | Yes |
| Operating System | juniper | junos | 24.4 | Yes |
| Operating System | juniper | junos_os_evolved | < 22.4 | Yes |
| Operating System | juniper | junos_os_evolved | 22.4 | Yes |
| Operating System | juniper | junos_os_evolved | 22.4 | Yes |
| Operating System | juniper | junos_os_evolved | 22.4 | Yes |
| Operating System | juniper | junos_os_evolved | 22.4 | Yes |
| Operating System | juniper | junos_os_evolved | 22.4 | Yes |
| Operating System | juniper | junos_os_evolved | 22.4 | Yes |
| Operating System | juniper | junos_os_evolved | 22.4 | Yes |
| Operating System | juniper | junos_os_evolved | 22.4 | Yes |
| Operating System | juniper | junos_os_evolved | 22.4 | Yes |
| Operating System | juniper | junos_os_evolved | 22.4 | Yes |
| Operating System | juniper | junos_os_evolved | 22.4 | Yes |
| Operating System | juniper | junos_os_evolved | 22.4 | Yes |
| Operating System | juniper | junos_os_evolved | 22.4 | Yes |
| Operating System | juniper | junos_os_evolved | 22.4 | Yes |
| Operating System | juniper | junos_os_evolved | 22.4 | Yes |
| Operating System | juniper | junos_os_evolved | 23.2 | Yes |
| Operating System | juniper | junos_os_evolved | 23.2 | Yes |
| Operating System | juniper | junos_os_evolved | 23.2 | Yes |
| Operating System | juniper | junos_os_evolved | 23.2 | Yes |
| Operating System | juniper | junos_os_evolved | 23.2 | Yes |
| Operating System | juniper | junos_os_evolved | 23.2 | Yes |
| Operating System | juniper | junos_os_evolved | 23.2 | Yes |
| Operating System | juniper | junos_os_evolved | 23.2 | Yes |
| Operating System | juniper | junos_os_evolved | 23.2 | Yes |
| Operating System | juniper | junos_os_evolved | 23.4 | Yes |
| Operating System | juniper | junos_os_evolved | 23.4 | Yes |
| Operating System | juniper | junos_os_evolved | 23.4 | Yes |
| Operating System | juniper | junos_os_evolved | 23.4 | Yes |
| Operating System | juniper | junos_os_evolved | 23.4 | Yes |
| Operating System | juniper | junos_os_evolved | 23.4 | Yes |
| Operating System | juniper | junos_os_evolved | 23.4 | Yes |
| Operating System | juniper | junos_os_evolved | 23.4 | Yes |
| Operating System | juniper | junos_os_evolved | 23.4 | Yes |
| Operating System | juniper | junos_os_evolved | 23.4 | Yes |
| Operating System | juniper | junos_os_evolved | 24.2 | Yes |
| Operating System | juniper | junos_os_evolved | 24.2 | Yes |
| Operating System | juniper | junos_os_evolved | 24.2 | Yes |
| Operating System | juniper | junos_os_evolved | 24.2 | Yes |
| Operating System | juniper | junos_os_evolved | 24.2 | Yes |
| Operating System | juniper | junos_os_evolved | 24.4 | Yes |
| Operating System | juniper | junos_os_evolved | 24.4 | Yes |
| Operating System | juniper | junos_os_evolved | 24.4 | Yes |
| Operating System | juniper | junos_os_evolved | 24.4 | Yes |
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 juniper'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.