CVE-2026-101987: 1284 in Juniper Networks Junos OS
Description
An Improper Validation of Specified Quantity in Input vulnerability in the routing daemon (rpd) of Juniper Networks Junos OS and Junos OS Evolved allows an adjacent attacker to cause a denial of service by sending a specific IS-IS SRv6 packet when SRv6 and Flexible Algorithm are enabled.
CVSS v3.1
Score 6.5medium
Affected software
Juniper Networks
Junos OS
Juniper Networks
Junos OS Evolved
pkg:rpm/juniper/junos-ospkg:rpm/juniper/junos-os-evoRun on your own infrastructure? Check whether these packages are installed with threat-finder — our free open-source scanner.
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
This vulnerability affects the routing daemon (rpd) in Juniper Networks Junos OS and Junos OS Evolved. An adjacent attacker can exploit improper validation of input quantity by sending a specific IS-IS SRv6 packet when both SRv6 and Flexible Algorithm features are enabled. The result is a denial of service condition impacting the affected device's routing functionality. The CVSS v3.1 base score is 6.5, indicating medium severity, with attack vector as adjacent network, low attack complexity, no privileges required, no user interaction, and impact limited to availability.
Potential Impact
Successful exploitation causes denial of service (DoS) on the affected Junos OS device's routing daemon, potentially disrupting network routing operations. There is no impact on confidentiality or integrity reported.
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. Users should monitor Juniper Networks advisories for updates and apply patches or mitigations once available. Until then, consider disabling SRv6 and Flexible Algorithm features if feasible to reduce exposure.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- juniper
- Date Reserved
- 2026-09-28T16:31:35.504Z
- Cvss Version
- 3.1
- State
- PUBLISHED
Threat ID: 6acfb2f82cdf04f656962358
Added to database: 10/14/2026, 16:51:04 UTC
Last enriched: 10/14/2026, 17:04:58 UTC
Last updated: 10/14/2026, 22:48:27 UTC
Views: 4
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