// For flags

CVE-2025-52958

Junos OS and Junos OS Evolved: When route validation is enabled, BGP connection establishment failure causes RPD crash

Severity Score

6.0
*CVSS v4

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

0
*Multiple Sources

Exploited in Wild

-
*KEV

Decision

Track
*SSVC
Descriptions

A Reachable Assertion vulnerability in the routing protocol daemon (rpd) of Juniper Networks Junos OS and Junos OS Evolved allows an adjacent, unauthenticated attacker to cause a Denial of Service (DoS).On all Junos OS and Junos OS Evolved devices, when route validation is enabled, a rare condition during BGP initial session establishment can lead to an rpd crash and restart. This occurs specifically when the connection request fails during error-handling scenario. Continued session establishment failures leads to a sustained DoS condition. This issue affects Junos OS: * All versions before 22.2R3-S6, * from 22.4 before 22.4R3-S6, * from 23.2 before 23.2R2-S3, * from 23.4 before 23.4R2-S4, * from 24.2 before 24.2R2; Junos OS Evolved: * All versions before 22.2R3-S6-EVO, * from 22.4 before 22.4R3-S6-EVO, * from 23.2 before 23.2R2-S3-EVO, * from 23.4 before 23.4R2-S4-EVO, * from 24.2 before 24.2R2-EVO.

A Reachable Assertion vulnerability in the routing protocol daemon (rpd) of Juniper Networks Junos OS and Junos OS Evolved allows an adjacent, unauthenticated attacker to cause a Denial of Service (DoS).On all Junos OS and Junos OS Evolved devices, when route validation is enabled, a rare condition during BGP initial session establishment can lead to an rpd crash and restart. This occurs specifically when the connection request fails during error-handling scenario. Continued session establishment failures leads to a sustained DoS condition. This issue affects Junos OS: * All versions before 22.2R3-S6, * from 22.4 before 22.4R3-S6, * from 23.2 before 23.2R2-S3, * from 23.4 before 23.4R2-S4, * from 24.2 before 24.2R2; Junos OS Evolved: * All versions before 22.2R3-S6-EVO, * from 22.4 before 22.4R3-S6-EVO, * from 23.2 before 23.2R2-S3-EVO, * from 23.4 before 23.4R2-S4-EVO, * from 24.2 before 24.2R2-EVO.

*Credits: N/A
CVSS Scores
Attack Vector
Adjacent
Attack Complexity
High
Attack Requirements
Present
Privileges Required
None
User Interaction
None
System
Vulnerable | Subsequent
Confidentiality
None
None
Integrity
None
None
Availability
High
Low
Attack Vector
Adjacent
Attack Complexity
High
Attack Requirements
Present
Privileges Required
None
User Interaction
None
System
Vulnerable | Subsequent
Confidentiality
None
None
Integrity
None
None
Availability
High
Low
Attack Vector
Adjacent
Attack Complexity
High
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
None
Integrity
None
Availability
High
Attack Vector
Adjacent
Attack Complexity
High
Authentication
None
Confidentiality
None
Integrity
None
Availability
Complete
* Common Vulnerability Scoring System
SSVC
  • Decision:Track
Exploitation
None
Automatable
No
Tech. Impact
Partial
* Organization's Worst-case Scenario
Timeline
  • 2025-06-23 CVE Reserved
  • 2025-07-11 CVE Published
  • 2025-07-11 CVE Updated
  • 2025-07-12 EPSS Updated
  • ---------- Exploited in Wild
  • ---------- KEV Due Date
  • ---------- First Exploit
CWE
  • CWE-617: Reachable Assertion
CAPEC
References (1)
URL Tag Source
URL Date SRC
URL Date SRC
URL Date SRC
https://supportportal.juniper.net/JSA100066 2025-07-11
Affected Vendors, Products, and Versions
Vendor Product Version Other Status
Vendor Product Version Other Status <-- --> Vendor Product Version Other Status
Juniper Networks
Search vendor "Juniper Networks"
 Junos OS
Search vendor "Juniper Networks" for product "Junos OS"
 < 22.2R3-S6
Search vendor "Juniper Networks" for product "Junos OS" and version " < 22.2R3-S6"
en
Affected
Juniper Networks
Search vendor "Juniper Networks"
 Junos OS
Search vendor "Juniper Networks" for product "Junos OS"
 >= 22.4 < 22.4R3-S6
Search vendor "Juniper Networks" for product "Junos OS" and version " >= 22.4 < 22.4R3-S6"
en
Affected
Juniper Networks
Search vendor "Juniper Networks"
 Junos OS
Search vendor "Juniper Networks" for product "Junos OS"
 >= 23.2 < 23.2R2-S3
Search vendor "Juniper Networks" for product "Junos OS" and version " >= 23.2 < 23.2R2-S3"
en
Affected
Juniper Networks
Search vendor "Juniper Networks"
 Junos OS
Search vendor "Juniper Networks" for product "Junos OS"
 >= 23.4 < 23.4R2-S4
Search vendor "Juniper Networks" for product "Junos OS" and version " >= 23.4 < 23.4R2-S4"
en
Affected
Juniper Networks
Search vendor "Juniper Networks"
 Junos OS
Search vendor "Juniper Networks" for product "Junos OS"
 >= 24.2 < 24.2R2
Search vendor "Juniper Networks" for product "Junos OS" and version " >= 24.2 < 24.2R2"
en
Affected
Juniper Networks
Search vendor "Juniper Networks"
 Junos OS Evolved
Search vendor "Juniper Networks" for product "Junos OS Evolved"
 < 22.2R3-S6-EVO
Search vendor "Juniper Networks" for product "Junos OS Evolved" and version " < 22.2R3-S6-EVO"
en
Affected
Juniper Networks
Search vendor "Juniper Networks"
 Junos OS Evolved
Search vendor "Juniper Networks" for product "Junos OS Evolved"
 >= 22.4 < 22.4R3-S6-EVO
Search vendor "Juniper Networks" for product "Junos OS Evolved" and version " >= 22.4 < 22.4R3-S6-EVO"
en
Affected
Juniper Networks
Search vendor "Juniper Networks"
 Junos OS Evolved
Search vendor "Juniper Networks" for product "Junos OS Evolved"
 >= 23.2 < 23.2R2-S3-EVO
Search vendor "Juniper Networks" for product "Junos OS Evolved" and version " >= 23.2 < 23.2R2-S3-EVO"
en
Affected
Juniper Networks
Search vendor "Juniper Networks"
 Junos OS Evolved
Search vendor "Juniper Networks" for product "Junos OS Evolved"
 >= 23.4 < 23.4R2-S4-EVO
Search vendor "Juniper Networks" for product "Junos OS Evolved" and version " >= 23.4 < 23.4R2-S4-EVO"
en
Affected
Juniper Networks
Search vendor "Juniper Networks"
 Junos OS Evolved
Search vendor "Juniper Networks" for product "Junos OS Evolved"
 >= 24.2 < 24.2R2-EVO
Search vendor "Juniper Networks" for product "Junos OS Evolved" and version " >= 24.2 < 24.2R2-EVO"
en
Affected