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CVE-2024-30409

Junos OS and Junos OS Evolved: Higher CPU consumption on routing engine leads to Denial of Service (DoS).

MEDIUM
5.3
CVSS Score
Published: April 12, 2024 at 03:03 PM UTC
Updated: June 17, 2026 at 07:26 AM UTC
3 products affected across 2 vendorsJunosJunos OS EvolvedJunos OS Evolved

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Severity
MEDIUM5.3
Exploit prediction
EPSS 0.5%
SSVC
No known exploit

Description

An Improper Check for Unusual or Exceptional Conditions vulnerability in telemetry processing of Juniper Networks Junos OS and Junos OS Evolved allows a network-based authenticated attacker to cause the forwarding information base telemetry daemon (fibtd) to crash, leading to a limited Denial of Service. This issue affects Juniper Networks Junos OS: * from 22.1 before 22.1R1-S2, 22.1R2. Junos OS Evolved:  * from 22.1 before 22.1R1-S2-EVO, 22.1R2-EVO.

Affected

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

Junos OS Evolved· Juniper
95%
22.1 ≤ v < 22.1r1-s222.1 ≤ v < 22.1r222.122.1 r122.1 r1-s1
Affected range stops below 22.1r1-s2, so it looks safe — our inference, not a vendor statement
Affected range stops below 22.1r2, so it looks safe — our inference, not a vendor statement
Junos· Juniper Networks
95%
22.1 ≤ v < 22.1R1-S2, 22.1R222.1 ≤ v < 22.1r1-s222.1 ≤ v < 22.1r222.122.1 r122.1 r1-s1
Affected range stops below 22.1R1-S2, 22.1R2, so it looks safe — our inference, not a vendor statement
Affected range stops below 22.1r1-s2, so it looks safe — our inference, not a vendor statement
Affected range stops below 22.1r2, so it looks safe — our inference, not a vendor statement
Junos OS Evolved· Juniper Networks
60%
22.1-EVO ≤ v < 22.1R1-S2-EVO, 22.1R2-EVO22.1-EVO
Affected range stops below 22.1R1-S2-EVO, 22.1R2-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

References (2)

Vendor Advisory
Source: [email protected]
https://supportportal.juniper.net/JSA79099
Technical DescriptionIssue Tracking
Source: [email protected]
https://www.first.org/cvss/calculator/4.0#CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/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

5.3MEDIUMjuniper
Attack Vector
NETWORK
Complexity
LOW
Privileges
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
NONE
Integrity
NONE
Availability
LOW
Vector?

Quick Info

StatusANALYZED
CWE
CWE-754

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