CVE-2026-102019: CWE-1284 Improper Validation of Specified Quantity in Input in Juniper Networks Junos OS
Description
CVE-2026-102019 is a medium severity vulnerability in Juniper Networks Junos OS and Junos Evolved affecting the rpd process. It involves improper validation of specified quantity in input, allowing an unauthenticated adjacent attacker to cause a denial-of-service (DoS) via a malformed RIPv2 message. The vulnerability does not impact confidentiality or integrity but can disrupt availability. Multiple versions of Junos OS and Junos Evolved are affected, with no explicit patch information provided in the input data.
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.
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
This vulnerability (CVE-2026-102019) is due to improper validation of specified quantity in input within the rpd process of Juniper Networks Junos OS and Junos Evolved. An unauthenticated attacker on an adjacent network can send a malformed RIPv2 message to trigger a denial-of-service condition. The CVSS 3.1 score is 6.5 (medium severity), reflecting that the attack vector is adjacent network with low attack complexity, no privileges or user interaction required, and the impact is limited to availability disruption. Affected versions include multiple ranges of Junos OS and Junos Evolved releases prior to certain service releases, but no patch or remediation details are provided in the source data.
Potential Impact
The vulnerability allows an unauthenticated adjacent attacker to cause a denial-of-service condition on affected Junos OS and Junos Evolved devices by sending malformed RIPv2 messages. There is no impact on confidentiality or integrity, only availability is affected.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. No official fix or temporary workaround is provided in the available data. Users should monitor Juniper Networks advisories for updates and apply patches or mitigations once available.
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: 6acfb6722cdf04f656979514
Added to database: 10/14/2026, 17:05:54 UTC
Last enriched: 10/14/2026, 17:19:32 UTC
Last updated: 10/14/2026, 19:00:32 UTC
Views: 3
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