CVE-2025-52947 Junos OS: ACX Series: When 'hot-standby' mode is configured for an L2 circuit, interface flap causes the FEB to crash

An Improper Handling of Exceptional Conditions vulnerability in route processing of Juniper Networks Junos OS on specific end-of-life EOL ACX Series platforms allows an attacker to crash the Forwarding Engine Board FEB by flapping an interface, leading to a Denial of Service DoS. On ACX1000,...

CVE-2025-52947

CVE-2025-52947 affects Juniper Networks Junos OS on ACX1000/1100/2000/2100/2200/4000/5048/5096, older than 21.2R3-S9. Root cause: improper handling of exceptional conditions in route processing when the L2 circuit’s primary path port IGP goes down while hot-standby is configured, causing FEB0 to ...

Juniper Junos OS Vulnerability (JSA96449)

The version of Junos OS installed on the remote host is affected by a vulnerability as referenced in the JSA96449 advisory. - An Improper Check for Unusual or Exceptional Conditions vulnerability in the pfe packet forwarding engine of Juniper Networks Junos OS on MX Series causes a port within a...

Packet Forwarding Engine SRX DoS

The vulnerability of the Packet Forwarding Engine PFE module in Junos OS routers of the SRX series is related to errors in processing input data length parameters. Exploiting this vulnerability allows a malicious actor to trigger a service failure by sending specially crafted packets...

Packet Forwarding Engine DoS

The vulnerability of the Packet Forwarding Engine PFE module in Junos OS routers of the MX series is related to insufficient checking of unusual or exceptional states. Exploiting this vulnerability can allow a malicious actor to trigger a service failure by sending specially crafted GRE packets...

Packet Forwarding Engine DoS

The vulnerability of the Packet Forwarding Engine PFE module in Junos OS routers of the MX series is related to memory release errors. Exploiting this vulnerability can allow a malicious actor to cause service interruptions...

Packet Forwarding Engine DoS

The vulnerability of the Packet Forwarding Engine PFE module in Juniper Networks’ Junos OS and Junos OS Evolved operating systems is related to memory release errors. Exploiting this vulnerability can allow a malicious actor to trigger service failures using specially created ARP packets in the...

CVE-2025-21595

A Missing Release of Memory after Effective Lifetime vulnerability in the Packet Forwarding Engine PFE of Juniper Networks Junos OS and Junos OS Evolved allows an adjacent, unauthenticated attacker to cause an FPC to crash, leading to Denial of Service DoS. On all Junos OS and Junos OS Evolved...

CVE-2025-21594

An Improper Check for Unusual or Exceptional Conditions vulnerability in the pfe packet forwarding engine of Juniper Networks Junos OS on MX Series causes a port within a pool to be blocked leading to Denial of Service DoS. In a DS-Lite Dual-Stack Lite and NAT Network Address Translation scenario...

CVE-2025-30660

An Improper Check for Unusual or Exceptional Conditions vulnerability in the Packet Forwarding Engine pfe of Juniper Networks Junos OS on MX Series allows an unauthenticated, network-based attacker to cause a Denial-of-Service DoS.When processing a high rate of specific GRE traffic destined to th...

CVE-2025-30659

An Improper Handling of Length Parameter Inconsistency vulnerability in the Packet Forwarding Engine PFE of Juniper Networks Junos OS on SRX Series allows an unauthenticated, network-based attacker to cause a Denial-of-Service DoS. When a device configured for Secure Vector Routing SVR receives a...

CVE-2025-30660

An Improper Check for Unusual or Exceptional Conditions vulnerability in the Packet Forwarding Engine pfe of Juniper Networks Junos OS on MX Series allows an unauthenticated, network-based attacker to cause a Denial-of-Service DoS.When processing a high rate of specific GRE traffic destined to th...

CVE-2025-30659

An Improper Handling of Length Parameter Inconsistency vulnerability in the Packet Forwarding Engine PFE of Juniper Networks Junos OS on SRX Series allows an unauthenticated, network-based attacker to cause a Denial-of-Service DoS. When a device configured for Secure Vector Routing SVR receives a...

CVE-2025-30660

An Improper Check for Unusual or Exceptional Conditions vulnerability in the Packet Forwarding Engine pfe of Juniper Networks Junos OS on MX Series allows an unauthenticated, network-based attacker to cause a Denial-of-Service DoS.When processing a high rate of specific GRE traffic destined to th...

CVE-2025-30647

A Missing Release of Memory after Effective Lifetime 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. In a subscriber management scenario, login/logout activity triggers a memo...

CVE-2025-21595

A Missing Release of Memory after Effective Lifetime vulnerability in the Packet Forwarding Engine PFE of Juniper Networks Junos OS and Junos OS Evolved allows an adjacent, unauthenticated attacker to cause an FPC to crash, leading to Denial of Service DoS. On all Junos OS and Junos OS Evolved...

CVE-2025-30660 Junos OS: MX Series: Decapsulation of specific GRE packets leads to PFE reset

An Improper Check for Unusual or Exceptional Conditions vulnerability in the Packet Forwarding Engine pfe of Juniper Networks Junos OS on MX Series allows an unauthenticated, network-based attacker to cause a Denial-of-Service DoS.When processing a high rate of specific GRE traffic destined to th...

CVE-2025-30660

CVE-2025-30660 affects Junos OS on Juniper MX Series with the Packet Forwarding Engine (pfe). The issue stems from an improper check for unusual conditions and can allow an unauthenticated, network-based attacker to trigger a DoS by processing a high rate of specific GRE traffic, causing the PFE ...

CVE-2025-30660 Junos OS: MX Series: Decapsulation of specific GRE packets leads to PFE reset

An Improper Check for Unusual or Exceptional Conditions vulnerability in the Packet Forwarding Engine pfe of Juniper Networks Junos OS on MX Series allows an unauthenticated, network-based attacker to cause a Denial-of-Service DoS.When processing a high rate of specific GRE traffic destined to th...

CVE-2025-30659 Junos OS: SRX Series: A device configured for vector routing crashes when receiving malformed traffic

An Improper Handling of Length Parameter Inconsistency vulnerability in the Packet Forwarding Engine PFE of Juniper Networks Junos OS on SRX Series allows an unauthenticated, network-based attacker to cause a Denial-of-Service DoS. When a device configured for Secure Vector Routing SVR receives a...