Improper check for unusual or exceptional conditions in Junos OS - CVE-2025-30660
Published: April 14, 2025
Vulnerability identifier: #VU107435
CSH Severity: Medium
CVSS v4: 8.7 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N]
CVE-ID: CVE-2025-30660
CWE-ID: CWE-754
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a remote non-authenticated attacker to perform a denial of service (DoS) attack.
The vulnerability exists due to improper check for unusual or exceptional conditions error in the Packet Forwarding Engine (pfe). A remote non-authenticated attacker can cause a Denial-of-Service (DoS).
When processing a high rate of specific GRE traffic destined to the device, the respective PFE will hang causing traffic forwarding to stop.
When this issue occurs the following logs can be observed: MQSS(0): LI-3: Received a parcel with more than 512B accompanying dataCHASSISD_FPC_ASIC_ERROR: ASIC Error detected.
Affected software
Junos OS
How to mitigate CVE-2025-30660
Install updates from vendor's website.
Junos OS - addressed in versions 21.2R3-S9, 21.4R3-S8, 22.2R3-S4, 22.4R3-S5, 23.2R2-S2, 23.4R2, 24.2R1