CVE-2024-47491Network attack vector

Sustained routing interruption via malformed BGP attribute

Published Oct 11, 2024 · Updated Oct 22, 2024

Improper exception handling in rpd in Juniper Networks Junos OS and Junos OS Evolved allows remote attackers to crash the daemon via BGP. rpd fails to handle a specifically malformed path attribute in a BGP UPDATE, causing the process to crash and restart. An established BGP session and configured BGP neighbor are required; repeated updates sustain routing-service interruption, chiefly on 32-bit systems.

CVSS severity8.2
High
EPSS probability0.60%
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 allows remote attackers to crash the daemon via BGP. rpd fails to handle a specifically malformed path attribute in a BGP UPDATE, causing the process to crash and restart. An established BGP session and configured BGP neighbor are required; repeated updates sustain routing-service interruption, chiefly on 32-bit systems.

The record

CVE
CVE-2024-47491
Published
Oct 11, 2024
Updated
Oct 22, 2024
Vendor
Juniper Networks
Product
Junos OS Evolved
Classifications
CWE-755, T1499.004
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Oct 11, 2024CVE publishedPublication date reported by the CVE source.
  2. Oct 22, 2024Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

Compare your product and version with the public record. A matching version still requires validation against your environment.

Is a vulnerable build present?

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

  1. Affected versionversion=0 <21.4r3-s8-evo
  2. Affected versionversion=0 <21.4R3-S8-EVO
  3. Affected versionversion=22.2 <22.2r3-s4-evo
  4. Affected versionversion=22.2 <22.2R3-S4-EVO
  5. Affected versionversion=22.4 <22.4r3-s3-evo
  6. Affected versionversion=22.4 <22.4R3-S3-EVO
  7. Affected versionversion=23.2 <23.2r2-s1-evo
  8. Affected versionversion=23.2 <23.2R2-S1-EVO
  9. Affected versionversion=23.4 <23.4r1-s2-evo
  10. Affected versionversion=23.4 <23.4R1-S2-EVO, 23.4R2-EVO
  11. Affected versionversion=23.4 <23.4r2-evo

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Juniper Networks · Junos OS Evolvedversion=0 <21.4r3-s8-evo; version=0 <21.4R3-S8-EVO; version=22.2 <22.2r3-s4-evo; version=22.2 <22.2R3-S4-EVO; version=22.4 <22.4r3-s3-evo; version=22.4 <22.4R3-S3-EVO; version=23.2 <23.2r2-s1-evo; version=23.2 <23.2R2-S1-EVO; version=23.4 <23.4r1-s2-evo; version=23.4 <23.4R1-S2-EVO, 23.4R2-EVO; version=23.4 <23.4r2-evo
Juniper Networks · Junos OSversion=0 <21.4r3-s8; version=0 <21.4R3-S8; version=22.2 <22.2r3-s4; version=22.2 <22.2R3-S4; version=22.4 <22.4r3-s3; version=22.4 <22.4R3-S3; version=23.2 <23.2r2-s1; version=23.2 <23.2R2-S1; version=23.4 <23.4r1-s2; version=23.4 <23.4R1-S2, 23.4R2; version=23.4 <23.4r2

Published CVSS scores

8.2NVDCVSS:4.0/AV:N/AC:H/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:L
5.9NVDCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H

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.

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No observations available

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

Weakness, pattern, technique

CWE-755Improper Handling of Exceptional Conditions
T1499.004Application or System Exploitation

Public exploit references

No public exploit references are available in this record.

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Technologies

Your stack

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Your stack

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