CVE-2025-30648

Junos OS and Junos OS Evolved: Receipt of a specifically malformed DHCP packet causes jdhcpd process to crash

HIGH

7.4

CVSS Score

Published: April 9, 2025 at 07:54 PM UTC

Updated: June 17, 2026 at 09:09 AM UTC

3 products affected across 2 vendorsJunosJunos OS EvolvedJunos OS Evolved

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Severity

HIGH7.4

Exploit prediction

EPSS 0.2%

SSVC

No known exploit

Description

An Improper Input Validation vulnerability in the Juniper DHCP Daemon (jdhcpd) of Juniper Networks Junos OS and Junos OS Evolved allows an unauthenticated, adjacent attacker to cause the jdhcpd process to crash resulting in a Denial of Service (DoS). When a specifically malformed DHCP packet is received from a DHCP client, the jdhcpd process crashes, which will lead to the unavailability of the DHCP service and thereby resulting in a sustained DoS. The DHCP process will restart automatically to recover the service. This issue will occur when dhcp-security is enabled. This issue affects Junos OS: * All versions before 21.2R3-S9, * from 21.4 before 21.4R3-S10, * from 22.2 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: * 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. .

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

Junos · Juniper Networks

95%

v < 21.2v < 21.2R3-S921.4 ≤ v < 21.4R3-S1022.2 ≤ v < 22.2R3-S622.4 ≤ v < 22.4R3-S623.2 ≤ v < 23.2R2-S323.4 ≤ v < 23.4R2-S424.2 ≤ v < 24.2R221.2 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 21.4 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 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 22.4 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 23.2 23.2 r1 23.2 r1-s1 23.2 r1-s2 23.2 r2 23.2 r2-s1 23.2 r2-s2 23.4 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 24.2 24.2 r1 24.2 r1-s1 24.2 r1-s2

Affected range stops below 21.2R3-S9, so it looks safe — our inference, not a vendor statement

Affected range stops below 21.4R3-S10, so it looks safe — our inference, not a vendor statement

Affected range stops below 22.2R3-S6, so it looks safe — our inference, not a vendor statement

Affected range stops below 22.4R3-S6, so it looks safe — our inference, not a vendor statement

Affected range stops below 23.2R2-S3, so it looks safe — our inference, not a vendor statement

Affected range stops below 23.4R2-S4, so it looks safe — our inference, not a vendor statement

Affected range stops below 24.2R2, so it looks safe — our inference, not a vendor statement

Junos OS Evolved · Juniper Networks

60%

22.4 ≤ v < 22.4R3-S6-EVO23.2 ≤ v < 23.2R2-S3-EVO23.4 ≤ v < 23.4R2-S4-EVO24.2 ≤ v < 24.2R2-EVO22.4 23.2 23.4 24.2

Affected range stops below 22.4R3-S6-EVO, so it looks safe — our inference, not a vendor statement

Affected range stops below 23.2R2-S3-EVO, so it looks safe — our inference, not a vendor statement

Affected range stops below 23.4R2-S4-EVO, so it looks safe — our inference, not a vendor statement

Affected range stops below 24.2R2-EVO, so it looks safe — our inference, not a vendor statement

Remediation

No guide yet

No remediation guidance has been written for this CVE yet. What the record does show:

Patch and advisory references

https://supportportal.juniper.net/JSA96458

References (1)

Vendor Advisory

Source: [email protected]

https://supportportal.juniper.net/JSA96458

SSVC — Action Prioritization

SSVCNo known exploitNot automatablePartial impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

7.4HIGHjuniper

Attack Vector: ADJACENT_NETWORK
Complexity: LOW
Privileges: NONE
User Interaction: NONE
Scope: CHANGED
Confidentiality: NONE
Integrity: NONE
Availability: HIGH

Vector?

Quick Info

StatusANALYZED

CWE

CWE-20

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