CVE-2025-52949
Junos OS and Junos OS Evolved: In an EVPN environment, receipt of specifically malformed BGP update causes RPD crash
Severity Score
7.1
*CVSS v4
Exploit Likelihood
*EPSS
Affected Versions
*CPE
Public Exploits
0
*Multiple Sources
Exploited in Wild
-
*KEV
Decision
Track
*SSVC
Descriptions
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. Only systems configured for Ethernet Virtual Private Networking (EVPN) signaling are vulnerable to this issue. This issue affects iBGP and eBGP, and both IPv4 and IPv6 are affected by this vulnerability.This issue affects: Junos OS: * all versions before 21.4R3-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-S5, * from 24.2 before 24.2R2-S1, * 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-S5-EVO, * from 24.2-EVO before 24.2R2-S1-EVO, * from 24.4-EVO before 24.4R1-S3-EVO, 24.4R2-EVO.
*Credits:
Juniper SIRT would like to acknowledge and thank Craig Dods from Meta’s Infrastructure Security Engineering team for responsibly reporting this vulnerability.
CVSS Scores
Attack Vector
Attack Complexity
Attack Requirements
Privileges Required
User Interaction
System
Vulnerable | Subsequent
Confidentiality
Integrity
Availability
Attack Vector
Attack Complexity
Attack Requirements
Privileges Required
User Interaction
System
Vulnerable | Subsequent
Confidentiality
Integrity
Availability
Attack Vector
Attack Complexity
Privileges Required
User Interaction
Scope
Confidentiality
Integrity
Availability
Attack Vector
Attack Complexity
Authentication
Confidentiality
Integrity
Availability
* Common Vulnerability Scoring System
SSVC
- Decision:Track
Exploitation
Automatable
Tech. Impact
* 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-130: Improper Handling of Length Parameter Inconsistency
CAPEC
References (1)
| URL | Tag | Source |
|---|
| URL | Date | SRC |
|---|
| URL | Date | SRC |
|---|
| URL | Date | SRC |
|---|---|---|
| https://supportportal.juniper.net/JSA100053 | 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" | < 21.4R3-S11 Search vendor "Juniper Networks" for product "Junos OS" and version " < 21.4R3-S11" | en |
Affected
| ||||||
| Juniper Networks Search vendor "Juniper Networks" | Junos OS Search vendor "Juniper Networks" for product "Junos OS" | >= 22.2 < 22.2R3-S7 Search vendor "Juniper Networks" for product "Junos OS" and version " >= 22.2 < 22.2R3-S7" | en |
Affected
| ||||||
| Juniper Networks Search vendor "Juniper Networks" | Junos OS Search vendor "Juniper Networks" for product "Junos OS" | >= 22.4 < 22.4R3-S7 Search vendor "Juniper Networks" for product "Junos OS" and version " >= 22.4 < 22.4R3-S7" | en |
Affected
| ||||||
| Juniper Networks Search vendor "Juniper Networks" | Junos OS Search vendor "Juniper Networks" for product "Junos OS" | >= 23.2 < 23.2R2-S4 Search vendor "Juniper Networks" for product "Junos OS" and version " >= 23.2 < 23.2R2-S4" | en |
Affected
| ||||||
| Juniper Networks Search vendor "Juniper Networks" | Junos OS Search vendor "Juniper Networks" for product "Junos OS" | >= 23.4 < 23.4R2-S5 Search vendor "Juniper Networks" for product "Junos OS" and version " >= 23.4 < 23.4R2-S5" | en |
Affected
| ||||||
| Juniper Networks Search vendor "Juniper Networks" | Junos OS Search vendor "Juniper Networks" for product "Junos OS" | >= 24.2 < 24.2R2-S1 Search vendor "Juniper Networks" for product "Junos OS" and version " >= 24.2 < 24.2R2-S1" | en |
Affected
| ||||||
| Juniper Networks Search vendor "Juniper Networks" | Junos OS Search vendor "Juniper Networks" for product "Junos OS" | >= 24.4 < 24.4R1-S3 Search vendor "Juniper Networks" for product "Junos OS" and version " >= 24.4 < 24.4R1-S3" | en |
Affected
| ||||||
| Juniper Networks Search vendor "Juniper Networks" | Junos OS Search vendor "Juniper Networks" for product "Junos OS" | >= 24.4 < 24.4R2 Search vendor "Juniper Networks" for product "Junos OS" and version " >= 24.4 < 24.4R2" | en |
Affected
| ||||||
| Juniper Networks Search vendor "Juniper Networks" | Junos OS Evolved Search vendor "Juniper Networks" for product "Junos OS Evolved" | < 22.2R3-S7-EVO Search vendor "Juniper Networks" for product "Junos OS Evolved" and version " < 22.2R3-S7-EVO" | en |
Affected
| ||||||
| Juniper Networks Search vendor "Juniper Networks" | Junos OS Evolved Search vendor "Juniper Networks" for product "Junos OS Evolved" | >= 22.4-EVO < 22.4R3-S7-EVO Search vendor "Juniper Networks" for product "Junos OS Evolved" and version " >= 22.4-EVO < 22.4R3-S7-EVO" | en |
Affected
| ||||||
| Juniper Networks Search vendor "Juniper Networks" | Junos OS Evolved Search vendor "Juniper Networks" for product "Junos OS Evolved" | >= 23.2-EVO < 23.2R2-S4-EVO Search vendor "Juniper Networks" for product "Junos OS Evolved" and version " >= 23.2-EVO < 23.2R2-S4-EVO" | en |
Affected
| ||||||
| Juniper Networks Search vendor "Juniper Networks" | Junos OS Evolved Search vendor "Juniper Networks" for product "Junos OS Evolved" | >= 23.4-EVO < 23.4R2-S5-EVO Search vendor "Juniper Networks" for product "Junos OS Evolved" and version " >= 23.4-EVO < 23.4R2-S5-EVO" | en |
Affected
| ||||||
| Juniper Networks Search vendor "Juniper Networks" | Junos OS Evolved Search vendor "Juniper Networks" for product "Junos OS Evolved" | >= 24.2-EVO < 24.2R2-S1-EVO Search vendor "Juniper Networks" for product "Junos OS Evolved" and version " >= 24.2-EVO < 24.2R2-S1-EVO" | en |
Affected
| ||||||
| Juniper Networks Search vendor "Juniper Networks" | Junos OS Evolved Search vendor "Juniper Networks" for product "Junos OS Evolved" | >= 24.4-EVO < 24.4R1-S3-EVO Search vendor "Juniper Networks" for product "Junos OS Evolved" and version " >= 24.4-EVO < 24.4R1-S3-EVO" | en |
Affected
| ||||||
| Juniper Networks Search vendor "Juniper Networks" | Junos OS Evolved Search vendor "Juniper Networks" for product "Junos OS Evolved" | >= 24.4-EVO < 24.4R2-EVO Search vendor "Juniper Networks" for product "Junos OS Evolved" and version " >= 24.4-EVO < 24.4R2-EVO" | en |
Affected
| ||||||