7.4

CVE-2025-59960: juniper networks junos os

CVSS: 7.4v3.1HighAnalyzed
Published 15-01-2026Last modified 16-01-2026
Open JSON

Vulnerability summary

CVE-2025-59960 is a high (CVSS 7.4) vulnerability in juniper networks junos os. EPSS estimates a 0.25% chance of exploitation in the next 30 days, higher than 16% of scored vulnerabilities.

Overall risk
30/100
0100
Medium · default modelHow is this calculated?
CVSS score
7.4/10
010
High · v3.1 (CVE.org)
EPSS score
0.25%
0%100%
Low · -0.01 pp in 30 days
KEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded

Timeline

  1. 15-01-2026
    PublishedVulnerability first disclosed.
  2. 16-01-2026
    Last modifiedVulnerability information updated.

Description

An Improper Check for Unusual or Exceptional Conditions vulnerability in the Juniper DHCP service (jdhcpd) of Juniper Networks Junos OS and Junos OS Evolved allows a DHCP client in one subnet to exhaust the address pools of other subnets, leading to a Denial of Service (DoS) on the downstream DHCP server. By default, the DHCP relay agent inserts its own Option 82 information when forwarding client requests, optionally replacing any Option 82 information provided by the client. When a specific DHCP DISCOVER is received in 'forward-only' mode with Option 82, the device should drop the message unless 'trust-option82' is configured. Instead, the DHCP relay forwards these packets to the DHCP server unmodified, which uses up addresses in the DHCP server's address pool, ultimately leading to address pool exhaustion. This issue affects Junos OS: * all versions before 21.2R3-S10, * from 21.4 before 21.4R3-S12, * all versions of 22.2, * from 22.4 before 22.4R3-S8, * from 23.2 before 23.2R2-S5, * from 23.4 before 23.4R2-S6, * from 24.2 before 24.2R2-S2, * from 24.4 before 24.4R2, * from 25.2 before 25.2R1-S1, 25.2R2. Junos OS Evolved: * all versions before 21.4R3-S12-EVO, * all versions of 22.2-EVO, * from 22.4 before 22.4R3-S8-EVO, * from 23.2 before 23.2R2-S5-EVO, * from 23.4 before 23.4R2-S6-EVO, * from 24.2 before 24.2R2-S2-EVO, * from 24.4 before 24.4R2-EVO, * from 25.2 before 25.2R1-S1-EVO, 25.2R2-EVO.

CVSS metrics

4 scores · 2 sources · 2 versions

EPSS trend

Probability

0.25%

Chance of exploitation in the next 30 days

Percentile

16%

Versus all other CVEs

30-day change

-0.01 pp

From 0.26% on 20-09-2026

20-09-202620-10-2026
EPSS score
0.25%

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< 21.2 | 21.2 | 21.2:r1 | 21.2:r1-s1 | 21.2:r1-s2 | 21.2:r2 | 21.2:r2-s1 | 21.2:r2-s2 | 21.2:r3 | 21.2:r3-s1 | 21.2:r3-s2 | 21.2:r3-s3 | 21.2:r3-s4 | 21.2:r3-s5 | 21.2:r3-s6 | 21.2:r3-s7 | 21.2:r3-s8 | 21.2:r3-s9 | 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-s11 | 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 | 22.4 | 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 | 22.4:r3-s7 | 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 | 23.2:r2-s4 | 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 | 23.4:r2-s5 | 24.2 | 24.2:r1 | 24.2:r1-s1 | 24.2:r1-s2 | 24.2:r2 | 24.2:r2-s1 | 24.4 | 24.4:r1 | 24.4:r1-s2 | 24.4:r1-s3 | 25.2 | 25.2:r1 | 25.2:r2
  • junos_os_evolved< 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-s11 | 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 | 22.4 | 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 | 22.4:r3-s7 | 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 | 23.2:r2-s4 | 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 | 23.4:r2-s5 | 24.2 | 24.2:r1 | 24.2:r1-s2 | 24.2:r2 | 24.2:r2-s1 | 24.4 | 24.4:r1 | 24.4:r1-s2 | 24.4:r1-s3 | 25.2 | 25.2:r1 | 25.2:r2
Juniper networks2 products
  • junos os< 21.2R3-S10 | ≥ 21.4, < 21.4R3-S12 | ≥ 22.2, < 22.2* | ≥ 22.4, < 22.4R3-S8 | ≥ 23.2, < 23.2R2-S5 | ≥ 23.4, < 23.4R2-S6 | ≥ 24.2, < 24.2R2-S2 | ≥ 24.4, < 24.4R2 | ≥ 25.2, < 25.2R1-S1, 25.2R2
  • junos os evolved< 21.4R3-S12-EVO | ≥ 22.2, < 22.2* | ≥ 22.4, < 22.4R3-S8-EVO | ≥ 23.2, < 23.2R2-S5-EVO | ≥ 23.4, < 23.4R2-S6-EVO | ≥ 24.2, < 24.2R2-S2-EVO | ≥ 24.4, < 24.4R2-EVO | ≥ 25.2, < 25.2R1-S1-EVO, 25.2R2-EVO

2 vendors · 4 products

References

2 links