Denial-of-Service Vulnerability in Junos OS Affecting Juniper Networks
CVE-2025-30660

8.7HIGH

Key Information:

Vendor

Juniper Networks
Status
Junos Os
Vendor
CVE Published:
9 April 2025

Badges

👾 Exploit Exists

What is CVE-2025-30660?

A vulnerability in the Packet Forwarding Engine (PFE) of Juniper Networks' Junos OS allows an unauthenticated network-based attacker to trigger a Denial-of-Service (DoS). This occurs when the device processes a high volume of specific GRE traffic, leading to a hang in the PFE and halting traffic forwarding. Log entries indicating this issue may include messages about oversized parcels and detected ASIC errors, signaling potential operational disruptions.

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Affected Version(s)

Junos OS MX Series 0 < 21.2R3-S9

Junos OS MX Series 21.4 < 21.4R3-S8

Junos OS MX Series 22.2 < 22.2R3-S4

References

https://supportportal.juniper.net/JSA96471
vendor-advisory

CVSS V4

Score:
8.7
Severity:
HIGH
Confidentiality:
None
Integrity:
None
Availability:
High
Attack Vector:
Network
Attack Complexity:
Low
Attack Required:
None
Privileges Required:
Undefined
User Interaction:
None

Timeline

  • 👾

    Exploit known to exist

  • Vulnerability published

  • Vulnerability Reserved

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