CVE-2025-52953 Information

Jul 12, 2025 cve

Description

An Expected Behavior Violation vulnerability in the routing protocol daemon (rpd) of Juniper Networks Junos OS and Junos OS Evolved allows an unauthenticated adjacent attacker sending a valid BGP UPDATE packet to cause a BGP session reset resulting in a Denial of Service (DoS). 

Continuous receipt and processing of this packet will create a sustained Denial of Service (DoS) condition.

This issue affects iBGP and eBGP and both IPv4 and IPv6 are affected by this vulnerability.

This issue affects Junos OS:

All versions before 21.2R3-S9
from 21.4 before 21.4R3-S11
from 22.2 before 22.2R3-S7
from 22.4 before 22.4R3-S7
from 23.2 before 23.2R2-S4
from 23.4 before 23.4R2-S4
from 24.2 before 24.2R2
from 24.4 before 24.4R1-S3 24.4R2

Junos OS Evolved:

All versions before 22.2R3-S7-EVO
from 22.4-EVO before 22.4R3-S7-EVO
from 23.2-EVO before 23.2R2-S4-EVO
from 23.4-EVO before 23.4R2-S4-EVO
from 24.2-EVO before 24.2R2-EVO
from 24.4-EVO before 24.4R1-S3-EVO 24.4R2-EVO.

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/JSA100059 https://www.juniper.net/documentation/us/en/software/junos/bgp/topics/task/routing-protocol-bgp-security-configuring.html

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-202507-1658 (Published: 2025-07-11)

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