CVE-2024-47502Network attack vector

Control-plane connection denial via uncleared TCP sessions

Published Oct 11, 2024 · Updated Oct 11, 2024

Resource exhaustion in affected Junos OS Evolved releases allows remote attackers to block new control-plane connections through IPv4 TCP traffic. The kernel fails to clear some terminated in-band TCP session state, causing retained entries to accumulate until Routing Engine resources are exhausted. Exposure is limited to sessions established through an FPC interface; new control-plane connections fail, and recovery requires a manual Routing Engine restart.

CVSS severity8.7
High
EPSS probability0.64%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Resource exhaustion in affected Junos OS Evolved releases allows remote attackers to block new control-plane connections through IPv4 TCP traffic. The kernel fails to clear some terminated in-band TCP session state, causing retained entries to accumulate until Routing Engine resources are exhausted. Exposure is limited to sessions established through an FPC interface; new control-plane connections fail, and recovery requires a manual Routing Engine restart.

The record

CVE
CVE-2024-47502
Published
Oct 11, 2024
Updated
Oct 11, 2024
Vendor
Juniper Networks
Product
Junos OS Evolved
Classifications
CWE-770, T1499.003
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Oct 11, 2024CVE publishedPublication date reported by the CVE source.
  2. Oct 11, 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-s9-evo
  2. Affected versionversion=0 <21.4R3-S9-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 <23.4r2-evo
  10. 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-s9-evo; version=0 <21.4R3-S9-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 <23.4r2-evo; version=23.4 <23.4R2-EVO

Published CVSS scores

8.7Juniper NetworksCVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:L
7.5Juniper NetworksCVSS:3.1/AV:N/AC:L/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-770Allocation of Resources Without Limits or Throttling
T1499.003Application Exhaustion Flood

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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