What is the severity of CVE-2026-21905?

CVE-2026-21905 has a severity rating of HIGH with a CVSS base score of 8.7.

CVE-2026-21905: High Vulnerability in Juniper Junos

A high-severity vulnerability in Juniper Networks Junos OS could allow unauthenticated attackers to cause a Denial of Service (DoS) condition. Organizations using affected versions must prioritize patching immediately to mitigate risk.

HIGHCVSS 8.7 · Published January 15, 2026

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CVE-2026-21905: High Vulnerability in Juniper Junos

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