PT-2025-29252 · Juniper Networks · Junos Mx Series+1

Published 2025-07-09 · Updated 2026-01-23 · CVE-2025-52982

Positive Technologies (AI Summary)

CVSS v4.0

8.2

High

Base vector

AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:L/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:Y/R:A/V:X/RE:M/U:X

Name of the Vulnerable Software and Affected Versions: Juniper Networks Junos OS MX Series versions prior to 21.2R3-S9 Juniper Networks Junos OS versions 21.4 starting from 21.4R1 Juniper Networks Junos OS versions prior to 22.2R3-S6 Juniper Networks Junos OS versions prior to 22.4R3-S6

Description: An Improper Resource Shutdown or Release vulnerability exists in the SIP ALG of Juniper Networks Junos OS on MX Series with MS-MPC. This allows an unauthenticated, network-based attacker to cause a Denial-of-Service (DoS). A specific sequence of call events, when an MX Series device with an MS-MPC is configured with two or more service sets processing SIP calls, can lead to a crash and restart of the MS-MPC.

Recommendations: Upgrade to Junos OS version 21.2R3-S9 or later. Upgrade to Junos OS version 22.2R3-S6 or later. Upgrade to Junos OS version 22.4R3-S6 or later.

Fix

DoS

Improper Resource Release

Weakness Enumeration

CWE-404

Related Identifiers

BDU:2025-08753

CVE-2025-52982

Affected Products

Junos

Junos Mx Series

References · 7

• https://bdu.fstec.ru/vul/2025-08753 · Security Note
• https://osv.dev/vulnerability/CVE-2025-52982 · Vendor Advisory
• https://supportportal.juniper.net/JSA100088 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2025-52982 · Security Note
• https://twitter.com/CVEnew/status/1943700204173078902 · Twitter Post
• https://t.me/cveNotify/149722 · Telegram Post
• https://t.me/cvetracker/27569 · Telegram Post