CVE-2026-102022: CWE-617 Reachable Assertion in Juniper Networks Junos OS
Description
CVE-2026-102022 is a reachable assertion vulnerability in the routing protocol daemon (rpd) of Juniper Networks Junos OS and Junos OS Evolved. An attacker with access to a configured BGP-LS peer can send crafted BGP-LS Link NLRI advertisements to cause the rpd process to crash, resulting in a denial of service. The vulnerability affects multiple versions of Junos OS and Junos OS Evolved as specified. The CVSS v3.1 base score is 7.5, indicating high severity due to the potential for service disruption without confidentiality or integrity impact.
CVSS v3.1
Score 7.5high
Affected software
Juniper Networks
Junos OS
Juniper Networks
Junos OS Evolved
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
This vulnerability (CVE-2026-102022) involves a reachable assertion failure in the routing protocol daemon (rpd) component of Juniper Networks Junos OS and Junos OS Evolved. Specifically, an attacker who has access to a configured BGP-LS peer can exploit this flaw by sending specially crafted BGP-LS Link NLRI advertisements. This triggers an assertion in the rpd process, causing it to crash and resulting in denial of service. The vulnerability affects multiple versions of Junos OS and Junos OS Evolved, including various release streams and EVO variants. The CVSS 3.1 score of 7.5 reflects a network attack vector with low complexity, no privileges required, no user interaction, and impact limited to availability.
Potential Impact
An attacker with access to a configured BGP-LS peer can cause the routing protocol daemon (rpd) to crash, leading to a denial of service condition. There is no impact on confidentiality or integrity. The service disruption could affect network routing stability and availability on affected Junos OS devices.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. No official fix or patch links are provided in the available data. Until a patch is available, restrict access to BGP-LS peers to trusted entities only to reduce exposure. Monitor vendor communications for updates on remediation.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- juniper
- Date Reserved
- 2026-09-28T17:33:49.410Z
- Cvss Version
- 3.1
- State
- PUBLISHED
Threat ID: 6acfb6742cdf04f656979518
Added to database: 10/14/2026, 17:05:56 UTC
Last enriched: 10/14/2026, 17:19:15 UTC
Last updated: 10/14/2026, 19:00:32 UTC
Views: 7
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