P4Verified

CVE-2025-59957: junos 21.4, 22.2; +1 more affected products

CVE-2025-59957. CVSS 3.1 base score 6.8 (MEDIUM, Vendor/CNA). EPSS 0.00186 (percentile 0.07465), scored 2026-10-06.

Affected technology

junos · before 21.4 (exclusive)
juniper

junos · 21.4
juniper

junos · 21.4 · update r1
juniper

junos · 21.4 · update r1-s1
juniper

junos · 21.4 · update r1-s2
juniper

junos · 21.4 · update r2
juniper

junos · 21.4 · update r2-s1
juniper

junos · 21.4 · update r2-s2
juniper

junos · 22.2
juniper

junos · 22.2 · update r1
juniper

junos · 22.2 · update r1-s1
juniper

junos · 22.2 · update r1-s2
juniper

junos · 22.2 · update r2
juniper

junos · 22.2 · update r2-s1
juniper

junos · 22.2 · update r2-s2
juniper

junos · 22.2 · update r3
juniper

junos · 22.2 · update r3-s1
juniper

junos · 22.2 · update r3-s2
juniper

Junos OS · 0 to before 21.4R3, 22.2 to before 22.2R3-S3
Juniper Networks

Component: Not specified by the source

Attack conditions (Vendor/CNA, CVSS 4.0): Physical access · No privileges required · No user interaction required

What an attacker can do

An unauthenticated attacker with physical access to the device can create a backdoor which allows complete control of the system. Vendor/CNA’s CVSS 4.0 assessment (base score 7.0/10) rates confidentiality, integrity and availability impact as high.

Published 2026-10-08 17:34:57.942696+00:00

CWE: CWE-346
CCR priority: 27.2 /100 (P4)
CVSS 3.1: 6.8 /10 · CVSS:3.1/AV:P/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H · Vendor/CNA
EPSS: 0.00184 · percentile 0.07333 · 2026-10-08
KEV: no

Provenance

FIRST EPSS daily exploit-probability · Source record · observed 2026-10-08 17:36:22.845483+00:00 UTC
NVD CVE API 2.0 · Source record · observed 2026-10-08 17:32:11.049884+00:00 UTC

Stable permalink: https://cybercodered.org/item/cve-cve-2025-59957.html