CVE-2025-52949
Severity CVSS v4.0:
HIGH
Type:
Unavailable / Other
Publication date:
11/07/2025
Last modified:
15/07/2025
Description
An Improper Handling of Length Parameter Inconsistency vulnerability in the routing protocol daemon (rpd) of Juniper Networks Junos OS and Junos OS Evolved allows a logically adjacent BGP peer sending a specifically malformed BGP packet to cause rpd to crash and restart, resulting in a Denial of Service (DoS). Continued receipt and processing of this packet will create a sustained Denial of Service (DoS) condition.<br />
<br />
Only systems configured for Ethernet Virtual Private Networking (EVPN) signaling are vulnerable to this issue. <br />
<br />
This issue affects iBGP and eBGP, and both IPv4 and IPv6 are affected by this vulnerability.This issue affects:<br />
<br />
Junos OS: <br />
<br />
<br />
<br />
* all versions before 21.4R3-S11, <br />
* from 22.2 before 22.2R3-S7, <br />
* from 22.4 before 22.4R3-S7, <br />
* from 23.2 before 23.2R2-S4, <br />
* from 23.4 before 23.4R2-S5, <br />
* from 24.2 before 24.2R2-S1, <br />
* from 24.4 before 24.4R1-S3, 24.4R2; <br />
<br />
<br />
<br />
<br />
Junos OS Evolved: <br />
<br />
<br />
<br />
* all versions before 22.2R3-S7-EVO, <br />
* from 22.4-EVO before 22.4R3-S7-EVO, <br />
* from 23.2-EVO before 23.2R2-S4-EVO, <br />
* from 23.4-EVO before 23.4R2-S5-EVO, <br />
* from 24.2-EVO before 24.2R2-S1-EVO, <br />
* from 24.4-EVO before 24.4R1-S3-EVO, 24.4R2-EVO.
Impact
Base Score 4.0
7.10
Severity 4.0
HIGH
Base Score 3.x
6.50
Severity 3.x
MEDIUM