Juniper Networks threat watch

Juniper CVE coverage for routers, switches, SRX firewalls, Mist, and enterprise network infrastructure.

Vendor watch hub

What this page covers

The Juniper Networkswatch hub is a vendor-specific view inside ITECS MSP Threat Radar. We pull the latest security advisories, incidents, and known-exploited CVEs directly from the official feeds below, score each one for MSP relevance, and surface what's most likely to need attention this week.

  • Confirm whether recent Juniper Networks activity overlaps with your environment.
  • Prioritize advisories by MSP-relevance score, severity, and status.
  • Turn the signal into an assessment, briefing, or managed-service engagement with ITECS.

At a glance

Tracked

24

Active

8

Featured

10

Unique CVEs

20

Most recent entry

Apr 9, 2026, 5:16 PM

Feed refreshes daily · 5:15 a.m. Central

Sources·CISA KEV and NVD (product vendor coverage)

"Most recent entry" is the newest item the upstream feed has published — not our sync time.

Watch items

Recent Juniper Networks watch items

Showing the 20 most recent items, newest first. Each row links to the official advisory.

20 rows · sorted newest first

Operations view

junos vulnerability (CVE-2026-33797)

HIGH
watchNVDCVE-2026-33797

An Improper Input Validation vulnerability in Juniper Networks Junos OS and Junos OS Evolved allows an unauthenticated, adjacent attacker, sending a specific genuine BGP packet in an already established BGP session to reset only that session causing a Denial of Service (DoS). An attacker repeatedly sending the packet will sustain the Denial of Service (DoS).This issue affects Junos OS: * 25.2 versions before 25.2R2 This issue doesn't not affected Junos OS versions before 25.2R1. This issue affects Junos OS Evolved: * 25.2-EVO versions before 25.2R2-EVO This issue doesn't not affected Junos OS Evolved versions before 25.2R1-EVO. eBGP and iBGP are affected. IPv4 and IPv6 are affected.

Apr 9, 2026, 5:16 PMOfficial source

junos vulnerability (CVE-2026-33790)

HIGH
watchNVDCVE-2026-33790

An Improper Check for Unusual or Exceptional Conditions vulnerability in the flow daemon (flowd) of Juniper Networks Junos OS on SRX Series allows an attacker sending a specific, malformed ICMPv6 packet to cause the srxpfe process to crash and restart. Continued receipt and processing of these packets will repeatedly crash the srxpfe process and sustain the Denial of Service (DoS) condition. During NAT64 translation, receipt of a specific, malformed ICMPv6 packet destined to the device will cause the srxpfe process to crash and restart. This issue cannot be triggered using IPv4 nor other IPv6 traffic. This issue affects Junos OS on SRX Series: * all versions before 21.2R3-S10, * all versions of 21.3, * from 21.4 before 21.4R3-S12, * all versions of 22.1, * from 22.2 before 22.2R3-S8, * all versions of 22.4, * from 22.4 before 22.4R3-S9, * from 23.2 before 23.2R2-S6, * from 23.4 before 23.4R2-S7, * from 24.2 before 24.2R2-S3, * from 24.4 before 24.4R2-S3, * from 25.2 before 25.2R1-S2, 25.2R2.

Apr 9, 2026, 5:16 PMOfficial source

junos vulnerability (CVE-2026-33785)

MEDIUM
watchNVDCVE-2026-33785

A Missing Authorization vulnerability in the CLI of Juniper Networks Junos OS on MX Series allows a local, authenticated user with low privileges to execute specific commands which will lead to a complete compromise of managed devices. Any user logged in, without requiring specific privileges, can issue 'request csds' CLI operational commands. These commands are only meant to be executed by high privileged or users designated for Juniper Device Manager (JDM) / Connected Security Distributed Services (CSDS) operations as they will impact all aspects of the devices managed via the respective MX. This issue affects Junos OS on MX Series: * 24.4 releases before 24.4R2-S3, * 25.2 releases before 25.2R2. This issue does not affect Junos OS releases before 24.4.

Apr 9, 2026, 5:16 PMOfficial source

junos vulnerability (CVE-2026-33778)

HIGH
watchNVDCVE-2026-33778

An Improper Validation of Syntactic Correctness of Input vulnerability in the IPsec library used by kmd and iked of Juniper Networks Junos OS on SRX Series and MX Series allows an unauthenticated, network-based attacker to cause a complete Denial-of-Service (DoS). If an affected device receives a specifically malformed first ISAKMP packet from the initiator, the kmd/iked process will crash and restart, which momentarily prevents new security associations (SAs) for from being established. Repeated exploitation of this vulnerability causes a complete inability to establish new VPN connections. This issue affects Junos OS on SRX Series and MX Series: * all versions before 22.4R3-S9, * 23.2 version before 23.2R2-S6, * 23.4 version before 23.4R2-S7, * 24.2 versions before 24.2R2-S4, * 24.4 versions before 24.4R2-S3, * 25.2 versions before 25.2R1-S2, 25.2R2.

Apr 9, 2026, 5:16 PMOfficial source

junos vulnerability (CVE-2026-21916)

HIGH
watchNVDCVE-2026-21916

A UNIX Symbolic Link (Symlink) Following vulnerability in the CLI of Juniper Networks Junos OS allows a local, authenticated attacker with low privileges to escalate their privileges to root which will lead to a complete compromise of the system. When after a user has performed a specific 'file link ...' CLI operation, another user commits (unrelated configuration changes), the first user can login as root. This issue affects Junos OS: * all versions before 23.2R2-S7, * 23.4 versions before 23.4R2-S6, * 24.2 versions before 24.2R2-S3, * 24.4 versions before 24.4R2-S2, * 25.2 versions before 25.2R2. This issue does not affect versions 25.4R1 or later.

Apr 9, 2026, 5:16 PMOfficial source

Juniper Junos OS Improper Isolation or Compartmentalization Vulnerability

critical
activeCISA KEVCVE-2025-21590

Juniper Junos OS contains an improper isolation or compartmentalization vulnerability. This vulnerability could allows a local attacker with high privileges to inject arbitrary code.

Mar 12, 2025, 7:00 PMOfficial source

Juniper Junos OS EX Series and SRX Series PHP External Variable Modification Vulnerability

critical
activeCISA KEVCVE-2023-36845

Juniper Junos OS on EX Series and SRX Series contains a PHP external variable modification vulnerability that allows an unauthenticated, network-based attacker to control an important environment variable. Using a crafted request, which sets the variable PHPRC, an attacker is able to modify the PHP execution environment allowing the injection und execution of code.

Nov 12, 2023, 6:00 PMOfficial source

Juniper Junos OS EX Series PHP External Variable Modification Vulnerability

critical
activeCISA KEVCVE-2023-36844

Juniper Junos OS on EX Series contains a PHP external variable modification vulnerability that allows an unauthenticated, network-based attacker to control certain, important environment variables. Using a crafted request an attacker is able to modify certain PHP environment variables, leading to partial loss of integrity, which may allow chaining to other vulnerabilities.

Nov 12, 2023, 6:00 PMOfficial source

Juniper Junos OS EX Series Missing Authentication for Critical Function Vulnerability

critical
activeCISA KEVCVE-2023-36847

Juniper Junos OS on EX Series contains a missing authentication for critical function vulnerability that allows an unauthenticated, network-based attacker to cause limited impact to the file system integrity. With a specific request to installAppPackage.php that doesn't require authentication, an attacker is able to upload arbitrary files via J-Web, leading to a loss of integrity for a certain part of the file system, which may allow chaining to other vulnerabilities.

Nov 12, 2023, 6:00 PMOfficial source

Juniper Junos OS SRX Series Missing Authentication for Critical Function Vulnerability

critical
activeCISA KEVCVE-2023-36846

Juniper Junos OS on SRX Series contains a missing authentication for critical function vulnerability that allows an unauthenticated, network-based attacker to cause limited impact to the file system integrity. With a specific request to user.php that doesn't require authentication, an attacker is able to upload arbitrary files via J-Web, leading to a loss of integrity for a certain part of the file system, which may allow chaining to other vulnerabilities.

Nov 12, 2023, 6:00 PMOfficial source

Juniper Junos OS SRX Series Missing Authentication for Critical Function Vulnerability

critical
activeCISA KEVCVE-2023-36851

Juniper Junos OS on SRX Series contains a missing authentication for critical function vulnerability that allows an unauthenticated, network-based attacker to cause limited impact to the file system integrity. With a specific request to webauth_operation.php that doesn't require authentication, an attacker is able to upload arbitrary files via J-Web, leading to a loss of integrity for a certain part of the file system, which may allow chaining to other vulnerabilities.

Nov 12, 2023, 6:00 PMOfficial source

Juniper Junos OS Path Traversal Vulnerability

critical
activeCISA KEVCVE-2020-1631

A path traversal vulnerability in the HTTP/HTTPS service used by J-Web, Web Authentication, Dynamic-VPN (DVPN), Firewall Authentication Pass-Through with Web-Redirect, and Zero Touch Provisioning (ZTP) allows an unauthenticated attacker to perform remote code execution.

Mar 24, 2022, 7:00 PMOfficial source

junos vulnerability (CVE-2016-1279)

CRITICAL
watchNVDCVE-2016-1279

J-Web in Juniper Junos OS before 12.1X46-D45, 12.1X46-D50, 12.1X47 before 12.1X47-D35, 12.3 before 12.3R12, 12.3X48 before 12.3X48-D25, 13.3 before 13.3R10, 13.3R9 before 13.3R9-S1, 14.1 before 14.1R7, 14.1X53 before 14.1X53-D35, 14.2 before 14.2R6, 15.1 before 15.1A2 or 15.1F4, 15.1X49 before 15.1X49-D30, and 15.1R before 15.1R3 might allow remote attackers to obtain sensitive information and consequently gain administrative privileges via unspecified vectors.

Sep 9, 2016, 9:05 AMOfficial source

junos vulnerability (CVE-2016-1263)

HIGH
watchNVDCVE-2016-1263

Juniper Junos OS before 12.1X46-D45, 12.1X46-D50, 12.1X47 before 12.1X47-D35, 12.3X48 before 12.3X48-D30, 13.3 before 13.3R9-S1, 14.1 before 14.1R7, 14.2 before 14.2R6, 15.1 before 15.1F2-S5, 15.1F4 before 15.1F4-S2, 15.1R before 15.1R2-S3, 15.1 before 15.1R3, and 15.1X49 before 15.1X49-D40 allow remote attackers to cause a denial of service (kernel crash) via a crafted UDP packet destined to the interface IP address of a 64-bit OS device.

Sep 9, 2016, 9:05 AMOfficial source

junos vulnerability (CVE-2016-1278)

HIGH
watchNVDCVE-2016-1278

Juniper Junos OS before 12.1X46-D50 on SRX Series devices reverts to "safe mode" authentication and allows root CLI logins without a password after a failed upgrade to 12.1X46, which might allow local users to gain privileges by leveraging use of the "request system software" command with the "partition" option.

Aug 5, 2016, 10:59 AMOfficial source

junos vulnerability (CVE-2016-1274)

HIGH
watchNVDCVE-2016-1274

Juniper Junos OS 14.1X53 before 14.1X53-D30 on QFX Series switches allows remote attackers to cause a denial of service (PFE panic) via a high rate of unspecified VXLAN packets.

Apr 15, 2016, 9:59 AMOfficial source

junos vulnerability (CVE-2016-1271)

HIGH
watchNVDCVE-2016-1271

Juniper Junos OS before 12.1X46-D45, 12.1X47 before 12.1X47-D30, 12.3 before 12.3R11, 12.3X48 before 12.3X48-D25, 13.2 before 13.2R8, 13.3 before 13.3R7, 14.1 before 14.1R6, 14.2 before 14.2R4, 15.1 before 15.1R1 or 15.1F2, and 15.1X49 before 15.1X49-D15 allow local users to gain privileges via crafted combinations of CLI commands and arguments, a different vulnerability than CVE-2015-3003, CVE-2014-3816, and CVE-2014-0615.

Apr 15, 2016, 9:59 AMOfficial source

junos vulnerability (CVE-2016-1270)

HIGH
watchNVDCVE-2016-1270

The rpd daemon in Juniper Junos OS before 12.1X44-D60, 12.1X46 before 12.1X46-D45, 12.1X47 before 12.1X47-D30, 12.3 before 12.3R9, 12.3X48 before 12.3X48-D20, 13.2 before 13.2R7, 13.2X51 before 13.2X51-D40, 13.3 before 13.3R6, 14.1 before 14.1R4, and 14.2 before 14.2R2, when configured with BGP-based L2VPN or VPLS, allows remote attackers to cause a denial of service (daemon restart) via a crafted L2VPN family BGP update.

Apr 15, 2016, 9:59 AMOfficial source

junos vulnerability (CVE-2016-1269)

HIGH
watchNVDCVE-2016-1269

Juniper Junos OS before 12.1X44-D60, 12.1X46 before 12.1X46-D40, 12.1X47 before 12.1X47-D30, 12.3 before 12.3R11, 12.3X48 before 12.3X48-D20, 13.2 before 13.2R9, 13.2X51 before 13.2X51-D39, 13.3 before 13.3R8, 14.1 before 14.1R6, 14.1X53 before 14.1X53-D30, 14.2 before 14.2R4-S1, 15.1 before 15.1R2, 15.1X49 before 15.1X49-D30, and 16.1 before 16.1R1 allow remote attackers to cause a denial of service (socket consumption) via crafted TCP timestamps.

Apr 15, 2016, 9:59 AMOfficial source

screenos vulnerability (CVE-2016-1268)

HIGH
watchNVDCVE-2016-1268

The administrative web services interface in Juniper ScreenOS before 6.3.0r21 allows remote attackers to cause a denial of service (reboot) via a crafted SSL packet.

Apr 15, 2016, 9:59 AMOfficial source

Related vendors

Other security vendors in the radar

Vendor watch FAQ

Common questions

What is the Juniper Networks threat watch page?

It is the Juniper Networks-specific view inside ITECS Threat Radar, built to track recent advisories, incidents, and watch items that may affect Dallas-area business operations.

How should teams use the Juniper Networks watch page?

Use it to confirm whether current Juniper Networks issues overlap with your environment, prioritize remediation, and decide whether you need an assessment, managed security follow-through, or vendor-specific hardening work.

Can ITECS help respond to Juniper Networks security issues?

Yes. ITECS can help map Juniper Networks advisories against your systems, validate affected services, prioritize remediation, and connect the issue to broader managed cybersecurity or managed IT workflows.