7.1

CVE-2025-52949: juniper networks junos os

CVSS: 7.1v4.0HighAnalyzed
Published 11-07-2025Last modified 11-07-2025
Open JSON

Vulnerability summary

CVE-2025-52949 is a high (CVSS 7.1) vulnerability in juniper networks junos os. EPSS estimates a 0.32% chance of exploitation in the next 30 days, higher than 23.2% of scored vulnerabilities.

Overall risk
28/100
0100
Medium · default modelHow is this calculated?
CVSS score
7.1/10
010
High · v4.0 (CVE.org)
EPSS score
0.32%
0%100%
Low · +0.04 pp in 30 days
KEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded

Timeline

  1. 11-07-2025
    PublishedVulnerability first disclosed.
  2. 11-07-2025
    Last modifiedVulnerability information updated.

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. 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.

CVSS metrics

4 scores · 2 sources · 2 versions

EPSS trend

Probability

0.32%

Chance of exploitation in the next 30 days

Percentile

23%

Versus all other CVEs

30-day change

+0.04 pp

From 0.27% on 20-09-2026

20-09-202620-10-2026
EPSS score
0.32%

Known exploited

Compare KEV catalogs

Not in any of the 3 tracked catalogs.

Public exploits

0 found

No public exploits indexed.

Weaknesses

CWE · root cause

Affected systems

Juniper2 products
  • junos< 21.4 | 21.4 | 21.4:r1 | 21.4:r1-s1 | 21.4:r1-s2 | 21.4:r2 | 21.4:r2-s1 | 21.4:r2-s2 | 21.4:r3 | 21.4:r3-s1 | 21.4:r3-s10 | 21.4:r3-s2 | 21.4:r3-s3 | 21.4:r3-s4 | 21.4:r3-s5 | 21.4:r3-s6 | 21.4:r3-s7 | 21.4:r3-s8 | 21.4:r3-s9 | 22.2 | 22.2:r1 | 22.2:r1-s1 | 22.2:r1-s2 | 22.2:r2 | 22.2:r2-s1 | 22.2:r2-s2 | 22.2:r3 | 22.2:r3-s1 | 22.2:r3-s2 | 22.2:r3-s3 | 22.2:r3-s4 | 22.2:r3-s5 | 22.2:r3-s6 | 22.4 | 22.4:r1 | 22.4:r1-s1 | 22.4:r1-s2 | 22.4:r2 | 22.4:r2-s1 | 22.4:r2-s2 | 22.4:r3 | 22.4:r3-s1 | 22.4:r3-s2 | 22.4:r3-s3 | 22.4:r3-s4 | 22.4:r3-s5 | 22.4:r3-s6 | 23.2 | 23.2:r1 | 23.2:r1-s1 | 23.2:r1-s2 | 23.2:r2 | 23.2:r2-s1 | 23.2:r2-s2 | 23.2:r2-s3 | 23.4 | 23.4:r1 | 23.4:r1-s1 | 23.4:r1-s2 | 23.4:r2 | 23.4:r2-s1 | 23.4:r2-s2 | 23.4:r2-s3 | 23.4:r2-s4 | 24.2 | 24.2:r1 | 24.2:r1-s1 | 24.2:r1-s2 | 24.2:r2 | 24.4 | 24.4:r1 | 24.4:r1-s2 | 24.4:r2
  • junos_os_evolved< 22.2 | 22.2 | 22.2:r1 | 22.2:r1-s1 | 22.2:r1-s2 | 22.2:r2 | 22.2:r2-s1 | 22.2:r2-s2 | 22.2:r3 | 22.2:r3-s1 | 22.2:r3-s2 | 22.2:r3-s3 | 22.2:r3-s4 | 22.2:r3-s5 | 22.2:r3-s6 | 22.4 | 22.4:r1 | 22.4:r1-s1 | 22.4:r1-s2 | 22.4:r2 | 22.4:r2-s1 | 22.4:r2-s2 | 22.4:r3 | 22.4:r3-s1 | 22.4:r3-s2 | 22.4:r3-s3 | 22.4:r3-s4 | 22.4:r3-s5 | 22.4:r3-s6 | 23.2 | 23.2:r1 | 23.2:r1-s1 | 23.2:r1-s2 | 23.2:r2 | 23.2:r2-s1 | 23.2:r2-s2 | 23.2:r2-s3 | 23.4 | 23.4:r1 | 23.4:r1-s1 | 23.4:r1-s2 | 23.4:r2 | 23.4:r2-s1 | 23.4:r2-s2 | 23.4:r2-s3 | 23.4:r2-s4 | 24.2 | 24.2:r1 | 24.2:r1-s2 | 24.2:r2 | 24.4 | 24.4:r1 | 24.4:r1-s2 | 24.4:r2
Juniper networks2 products
  • junos os< 21.4R3-S11 | ≥ 22.2, < 22.2R3-S7 | ≥ 22.4, < 22.4R3-S7 | ≥ 23.2, < 23.2R2-S4 | ≥ 23.4, < 23.4R2-S5 | ≥ 24.2, < 24.2R2-S1 | ≥ 24.4, < 24.4R1-S3, 24.4R2
  • junos os evolved< 22.2R3-S7-EVO | ≥ 22.4-EVO, < 22.4R3-S7-EVO | ≥ 23.2-EVO, < 23.2R2-S4-EVO | ≥ 23.4-EVO, < 23.4R2-S5-EVO | ≥ 24.2-EVO, < 24.2R2-S1-EVO | ≥ 24.4-EVO, < 24.4R1-S3-EVO, 24.4R2-EVO

2 vendors · 4 products

References

1 links