What is CVE-2026-57019?

CVE-2026-57019 is a medium-severity vulnerability in Juniper Networks Junos Os, classified under Improper Validation of Specified Quantity in Input. CVSS score: 6.5/10. Published 2026-07-09.

How severe is CVE-2026-57019?

Medium severity. CVSS v3 base score is 6.5 out of 10.

Vulnerability in Juniper Networks Junos Os

CVE-2026-57019

An Improper Validation of Specified Quantity in Input vulnerability in the Packet Forwarding Engine (pfe) of Juniper Networks Junos OS on MX Series allows an unauthenticated, adjacent attacker to cause a Denial-of-Service (DoS). When a s…

CVSS v3 metric

CVSS v3 base score 6.5 (Medium). Vector: CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.

Affected products

Juniper Networks Junos Os — versions 0, 23.4, 24.2

Weakness classification (CWE)

CWE-1284 — Improper Validation of Specified Quantity in Input

References

sirt@juniper.net (vendor-advisory)

Frequently asked questions

What is CVE-2026-57019?: CVE-2026-57019 is a medium-severity vulnerability in Juniper Networks Junos Os, classified under Improper Validation of Specified Quantity in Input. CVSS score: 6.5/10. Published 2026-07-09.
How severe is CVE-2026-57019?: Medium severity. CVSS v3 base score is 6.5 out of 10.