CVE-2024-21614

Junos OS and Junos OS Evolved: A specific query via DREND causes rpd crash

HIGH

7.5

CVSS Score

Published: January 12, 2024 at 12:56 AM UTC

Updated: June 17, 2026 at 07:09 AM UTC

3 products affected across 2 vendorsJunosJunos OS EvolvedJunos OS Evolved

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Severity

HIGH7.5

Exploit prediction

EPSS 0.7%

SSVC

No known exploit

Description

An Improper Check for Unusual or Exceptional Conditions vulnerability in Routing Protocol Daemon (RPD) of Juniper Networks Junos OS and Junos OS Evolved allows a network-based, unauthenticated attacker to cause rpd to crash, leading to Denial of Service (DoS). On all Junos OS and Junos OS Evolved platforms, when NETCONF and gRPC are enabled, and a specific query is executed via Dynamic Rendering (DREND), rpd will crash and restart. Continuous execution of this specific query will cause a sustained Denial of Service (DoS) condition. This issue affects: Juniper Networks Junos OS * 22.2 versions earlier than 22.2R2-S2, 22.2R3; * 22.3 versions earlier than 22.3R2, 22.3R3. Juniper Networks Junos OS Evolved * 22.2 versions earlier than 22.2R2-S2-EVO, 22.2R3-EVO; * 22.3 versions earlier than 22.3R2-EVO, 22.3R3-EVO. This issue does not affect Juniper Networks: Junos OS versions earlier than 22.2R1; Junos OS Evolved versions earlier than 22.2R1-EVO.

Affected

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

Junos OS Evolved · Juniper

95%

22.2 22.2 r1 22.2 r1-s1 22.2 r2 22.2 r2-s1 22.3 22.3 r1 22.3 r1-s1 22.3 r1-s2

Junos · Juniper Networks

95%

22.2 ≤ v < 22.2R2-S2, 22.2R322.3 ≤ v < 22.3R2, 22.3R322.2 22.2 r1 22.2 r1-s1 22.2 r1-s2 22.2 r2 22.2 r2-s1 22.3 22.3 r1 22.3 r1-s1 22.3 r1-s2

Affected range stops below 22.2R2-S2, 22.2R3, so it looks safe — our inference, not a vendor statement

Affected range stops below 22.3R2, 22.3R3, so it looks safe — our inference, not a vendor statement

Junos OS Evolved · Juniper Networks

60%

22.2 ≤ v < 22.2R2-S2-EVO, 22.2R3-EVO22.3 ≤ v < 22.3R2-EVO, 22.3R3-EVO22.2 22.3

Affected range stops below 22.2R2-S2-EVO, 22.2R3-EVO, so it looks safe — our inference, not a vendor statement

Affected range stops below 22.3R2-EVO, 22.3R3-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/JSA75755

References (2)

Vendor Advisory

Source: [email protected]

https://supportportal.juniper.net/JSA75755

Technical DescriptionThird Party Advisory

Source: [email protected]

https://www.first.org/cvss/calculator/4.0#CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N

SSVC — Action Prioritization

SSVCNo known exploitAutomatablePartial impact

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

CVSS

7.5HIGHjuniper

Attack Vector: NETWORK
Complexity: LOW
Privileges: NONE
User Interaction: NONE
Scope: UNCHANGED
Confidentiality: NONE
Integrity: NONE
Availability: HIGH

Vector?

Quick Info

StatusMODIFIED

CWE

CWE-754

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