CVE-2025-52955 Information

Jul 12, 2025 cve

Description

An Incorrect Calculation of Buffer Size vulnerability in the routing protocol daemon (rpd) of Juniper Networks Junos OS allows an adjacent unauthenticated attacker to cause a memory corruption that leads to a rpd crash. 

When the logical interface using a routing instance flaps continuously specific updates are sent to the jflow/sflow modules. This results in memory corruption leading to an rpd crash and restart. 

Continued receipt of these specific updates will cause a sustained Denial of Service condition.

This issue affects Junos OS:

All versions before 21.2R3-S9 
All versions of 21.4 
All versions of 22.2 
from 22.4 before 22.4R3-S7 
from 23.2 before 23.2R2-S3 
from 23.4 before 23.4R2-S4 
from 24.2 before 24.2R2.

CVSS Vector

CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Reference

https://supportportal.juniper.net/JSA100062

Attack Complexity

LOW

Privileges Required

NONE

User Interaction Required

NONE

Scope

NONE

Confidentiality Impact

UNCHANGED

Integrity Impact

NONE

Availability Impact

NONE

Base Score

HIGH

Base Severity

6.5

CNNVD-202507-1661 (Published: 2025-07-11)

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