7.1

CVSS4.0

CVE-2026-21921 - Junos OS and Junos OS Evolved: When telemetry collectors are frequently subscribing and unsubscribi…

A Use After Free vulnerability in the chassis daemon (chassisd) of Juniper Networks Junos OS and Junos OS Evolved allows a network-based attacker authenticated with low privileges to cause a Denial-of-Service (DoS). When telemetry collectors are frequently subscribing and unsubscribing to sensors …

📅 Published: Jan. 15, 2026, 8:28 p.m. 🔄 Last Modified: Jan. 16, 2026, 3:55 p.m.

8.7

CVSS4.0

CVE-2026-21920 - Junos OS: SRX Series: If a specific request is processed by the DNS subsystem flowd will crash

An Unchecked Return Value vulnerability in the DNS module of Juniper Networks Junos OS on SRX Series allows an unauthenticated, network-based attacker to cause a Denial-of-Service (DoS). If an SRX Series device configured for DNS processing, receives a specifically formatted DNS request flowd w…

📅 Published: Jan. 15, 2026, 8:28 p.m. 🔄 Last Modified: Jan. 16, 2026, 3:55 p.m.

8.7

CVSS4.0

CVE-2026-21918 - Junos OS: SRX and MX Series: When TCP packets occur in a specific sequence flowd crashes

A Double Free vulnerability in the flow processing daemon (flowd) of Juniper Networks Junos OS on SRX and MX Series allows an unauthenticated, network-based attacker to cause a Denial-of-Service (DoS). On all SRX and MX Series platforms, when during TCP session establishment a specific sequence of …

📅 Published: Jan. 15, 2026, 8:27 p.m. 🔄 Last Modified: Jan. 16, 2026, 3:55 p.m.

8.7

CVSS4.0

CVE-2026-21917 - Junos OS: SRX Series: Specifically malformed SSL packet causes FPC crash

An Improper Validation of Syntactic Correctness of Input vulnerability in the Web-Filtering module of Juniper Networks Junos OS on SRX Series allows an unauthenticated, network-based attacker to cause a Denial-of-Service (DoS). If an SRX device configured for UTM Web-Filtering receives a specifica…

📅 Published: Jan. 15, 2026, 8:27 p.m. 🔄 Last Modified: Jan. 16, 2026, 3:55 p.m.

8.7

CVSS4.0

CVE-2026-21914 - Junos OS: SRX Series: A specifically malformed GTP message will cause an FPC crash

An Improper Locking vulnerability in the GTP plugin of Juniper Networks Junos OS on SRX Series allows an unauthenticated, network-based attacker to cause a Denial-of-Service (Dos). If an SRX Series device receives a specifically malformed GPRS Tunnelling Protocol (GTP) Modify Bearer Request messag…

📅 Published: Jan. 15, 2026, 8:25 p.m. 🔄 Last Modified: Jan. 16, 2026, 3:55 p.m.

8.7

CVSS4.0

CVE-2026-21913 - Junos OS: EX4000: A high volume of traffic destined to the device leads to a crash and restart

An Incorrect Initialization of Resource vulnerability in the Internal Device Manager (IDM) of Juniper Networks Junos OS on EX4000 models allows an unauthenticated, network-based attacker to cause a Denial-of-Service (DoS). On EX4000 models with 48 ports (EX4000-48T, EX4000-48P, EX4000-48MP) a high…

📅 Published: Jan. 15, 2026, 8:25 p.m. 🔄 Last Modified: Jan. 16, 2026, 3:55 p.m.

6.8

CVSS4.0

CVE-2026-21912 - Junos OS: MX10k Series: 'show system firmware' CLI command may lead to LC480 or LC2101 line card re…

A Time-of-check Time-of-use (TOCTOU) Race Condition vulnerability in the method to collect FPC Ethernet firmware statistics of Juniper Networks Junos OS on MX10k Series allows a local, low-privileged attacker executing the 'show system firmware' CLI command to cause an LC480 or LC2101 line card to …

📅 Published: Jan. 15, 2026, 8:24 p.m. 🔄 Last Modified: Jan. 16, 2026, 3:55 p.m.

7.1

CVSS4.0

CVE-2026-21911 - Junos OS Evolved: Flapping management interface causes MAC learning on label-switched interfaces to…

An Incorrect Calculation vulnerability in the Layer 2 Control Protocol Daemon (l2cpd) of Juniper Networks Junos OS Evolved allows an unauthenticated network-adjacent attacker flapping the management interface to cause the learning of new MACs over label-switched interfaces (LSI) to stop while g…

📅 Published: Jan. 15, 2026, 8:23 p.m. 🔄 Last Modified: Jan. 16, 2026, 3:55 p.m.

7.1

CVSS4.0

CVE-2026-21910 - Junos OS: EX4k Series, QFX5k Series: In an EVPN-VXLAN configuration link flaps cause Inter-VNI traf…

An Improper Check for Unusual or Exceptional Conditions vulnerability in the packet forwarding engine (PFE) of Juniper Networks Junos OS on EX4k Series and QFX5k Series platforms allows an unauthenticated network-adjacent attacker flapping an interface to cause traffic between VXLAN Network Identif…

📅 Published: Jan. 15, 2026, 8:23 p.m. 🔄 Last Modified: Jan. 16, 2026, 3:55 p.m.

7.1

CVSS4.0

CVE-2026-21909 - Junos OS and Junos OS Evolved: Receipt of specific IS-IS update packet causes memory leak leading t…

A Missing Release of Memory after Effective Lifetime vulnerability in the routing protocol daemon (rpd) Juniper Networks Junos OS and Junos OS Evolved allows an unauthenticated attacker controlling an adjacent IS-IS neighbor to send a specific update packet causing a memory leak. Continued receipt …

📅 Published: Jan. 15, 2026, 8:22 p.m. 🔄 Last Modified: Jan. 16, 2026, 3:55 p.m.
Total resulsts: 329111
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