CVE-2024-39541

rpd crash via conflicting TE database entries

Published Jul 11, 2024 · Updated Aug 2, 2024

Improper exception handling in rpd in Juniper Networks Junos OS and Junos OS Evolved 22.4 through 23.4 allows attackers to crash and restart rpd. rpd accepts conflicting IP or ISO node addresses in the Traffic Engineering database, then fails when a later operation processes those entries. Exposure requires the source-packet-routing TE database plus OSPF or IS-IS TE configuration; successful triggering interrupts routing service.

CVSS severity7.1
High
EPSS probability0.33%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Improper exception handling in rpd in Juniper Networks Junos OS and Junos OS Evolved 22.4 through 23.4 allows attackers to crash and restart rpd. rpd accepts conflicting IP or ISO node addresses in the Traffic Engineering database, then fails when a later operation processes those entries. Exposure requires the source-packet-routing TE database plus OSPF or IS-IS TE configuration; successful triggering interrupts routing service.

The record

CVE
CVE-2024-39541
Published
Jul 11, 2024
Updated
Aug 2, 2024
Vendor
Juniper Networks
Product
Junos OS Evolved
Classifications
CWE-755, T1499
Attack vector
adjacent
Privileges
unauthenticated

Timeline

How it unfolded

  1. Jul 11, 2024CVE publishedPublication date reported by the CVE source.
  2. Aug 2, 2024Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=22.4-EVO <22.4R3-S2-EVO
  2. Affected versionversion=23.2-EVO <23.2R2-EVO
  3. Affected versionversion=23.4-EVO <23.4R1-S1-EVO, 23.4R2-EVO

What conditions does exploitation require?

Attack vectoradjacent
Required privilegesunauthenticated

What is affected?

Juniper Networks · Junos OS Evolvedversion=22.4-EVO <22.4R3-S2-EVO; version=23.2-EVO <23.2R2-EVO; version=23.4-EVO <23.4R1-S1-EVO, 23.4R2-EVO
Juniper Networks · Junos OSversion=22.4 <22.4R3-S1; version=23.2 <23.2R2; version=23.4 <23.4R1-S1, 23.4R2

Published CVSS scores

6.5Juniper NetworksCVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
7.1Juniper NetworksCVSS:4.0/AV:A/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:L

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectoradjacent
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-755Improper Handling of Exceptional Conditions
T1499Endpoint Denial of Service

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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