CyberRota Analysis
This is a medium severity vulnerability with a CVSS score of 6.5. It may lead to a denial-of-service condition.
CVE
CVE-2026-21903
Severity
MEDIUM
CVSS
6.5
EPSS
0.36%
Original NVD Description
A Stack-based Buffer Overflow vulnerability in the Packet Forwarding Engine (pfe) of Juniper Networks Junos OS allows a network-based attacker, authenticated with low privileges to cause a Denial-of-Service (DoS). Subscribing to telemetry sensors at scale causes all FPC connections to drop, resulting in an FPC crash and restart. The issue was not seen when YANG packages for the specific sensors were installed. This issue affects Junos OS: * all versions before 22.4R3-S7, * 23.2 version before 23.2R2-S4, * 23.4 versions before 23.4R2.
Related CVEs
Other vulnerabilities affecting the same vendor(s)