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CVE-2025-59962: juniper networks junos os Access of Uninitialized Pointer

CVSS: 6.0v4.0MediumAnalyzed
Published 09-10-2025Last modified 09-10-2025
Open JSON

Vulnerability summary

CVE-2025-59962 is a medium (CVSS 6.0) Access of Uninitialized Pointer vulnerability in juniper networks junos os. EPSS estimates a 0.18% chance of exploitation in the next 30 days, higher than 6.8% of scored vulnerabilities.

Overall risk
24/100
0100
Low · default modelHow is this calculated?
CVSS score
6.0/10
010
Medium · v4.0 (CVE.org)
EPSS score
0.18%
0%100%
Low · 0.00 pp in 30 days
KEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded

Timeline

  1. 09-10-2025
    PublishedVulnerability first disclosed.
  2. 09-10-2025
    Last modifiedVulnerability information updated.

Description

An Access of Uninitialized Pointer vulnerability in the routing protocol daemon (rpd) of Juniper Networks Junos OS and Junos OS Evolved with BGP sharding configured allows an attacker triggering indirect next-hop updates, along with timing outside the attacker's control, to cause rpd to crash and restart, leading to a Denial of Service (DoS). With BGP sharding enabled, triggering route resolution of an indirect next-hop (e.g., an IGP route change over which a BGP route gets resolved), may cause rpd to crash and restart. An attacker causing continuous IGP route churn, resulting in repeated route re-resolution, will increase the likelihood of triggering this issue, leading to a potentially extended DoS condition. This issue affects: Junos OS: * all versions before 21.4R3-S6, * from 22.1 before 22.1R3-S6, * from 22.2 before 22.2R3-S3, * from 22.3 before 22.3R3-S3, * from 22.4 before 22.4R3, * from 23.2 before 23.2R2; Junos OS Evolved: * all versions before 22.3R3-S3-EVO, * from 22.4 before 22.4R3-EVO, * from 23.2 before 23.2R2-EVO. Versions before Junos OS 21.3R1 and Junos OS Evolved 21.3R1-EVO are unaffected by this issue.

CVSS metrics

4 scores · 2 sources · 2 versions

EPSS trend

Probability

0.18%

Chance of exploitation in the next 30 days

Percentile

7%

Versus all other CVEs

30-day change

0.00 pp

From 0.18% on 20-09-2026

20-09-202620-10-2026
EPSS score
0.18%

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-s2 | 21.4:r3-s3 | 21.4:r3-s4 | 21.4:r3-s5 | 22.1 | 22.1:r1 | 22.1:r1-s1 | 22.1:r1-s2 | 22.1:r2 | 22.1:r2-s1 | 22.1:r2-s2 | 22.1:r3 | 22.1:r3-s1 | 22.1:r3-s2 | 22.1:r3-s3 | 22.1:r3-s4 | 22.1:r3-s5 | 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 | 22.3 | 22.3:r1 | 22.3:r1-s1 | 22.3:r1-s2 | 22.3:r2 | 22.3:r2-s1 | 22.3:r2-s2 | 22.3:r3 | 22.3:r3-s1 | 22.3:r3-s2 | 22.4 | 22.4:r1 | 22.4:r1-s1 | 22.4:r1-s2 | 22.4:r2 | 22.4:r2-s1 | 22.4:r2-s2 | 23.2 | 23.2:r1 | 23.2:r1-s1 | 23.2:r1-s2
  • junos_os_evolved< 22.3 | 22.3 | 22.3:r1 | 22.3:r1-s1 | 22.3:r1-s2 | 22.3:r2 | 22.3:r2-s1 | 22.3:r2-s2 | 22.3:r3 | 22.3:r3-s1 | 22.3:r3-s2 | 22.4 | 22.4:r1 | 22.4:r1-s1 | 22.4:r1-s2 | 22.4:r2 | 22.4:r2-s1 | 22.4:r2-s2 | 23.2 | 23.2:r1 | 23.2:r1-s1 | 23.2:r1-s2
Juniper networks2 products
  • junos os≥ 21.4, < 21.4R3-S6 | ≥ 22.1, < 22.1R3-S6 | ≥ 22.2, < 22.2R3-S3 | ≥ 22.3, < 22.3R3-S3 | ≥ 22.4, < 22.4R3 | ≥ 23.2, < 23.2R2
  • junos os evolved≥ 22.3, < 22.3R3-S3-EVO | ≥ 22.4, < 22.4R3-EVO | ≥ 23.2, < 23.2R2-EVO

2 vendors · 4 products

References

1 links