CVE-2023-44175

Sustained routing outage via PIM-triggered rpd assertion

Published Oct 12, 2023 · Updated Sep 19, 2024

Reachable assertion in rpd in Juniper Networks Junos OS and Junos OS Evolved allows remote attackers to crash rpd via PIM packets. The daemon evaluates a reachable assertion while processing a specific genuine PIM packet and terminates; the assertion condition is undisclosed. PIM must be enabled, and repeated delivery sustains the outage, although Juniper reports no observed issue in all-Juniper networks.

CVSS severity6.5
Medium
EPSS probability0.52%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Reachable assertion in rpd in Juniper Networks Junos OS and Junos OS Evolved allows remote attackers to crash rpd via PIM packets. The daemon evaluates a reachable assertion while processing a specific genuine PIM packet and terminates; the assertion condition is undisclosed. PIM must be enabled, and repeated delivery sustains the outage, although Juniper reports no observed issue in all-Juniper networks.

The record

CVE
CVE-2023-44175
Published
Oct 12, 2023
Updated
Sep 19, 2024
Vendor
Juniper Networks
Product
Junos OS Evolved
Classifications
CWE-617, T1499.004
Attack vector
adjacent
Privileges
unauthenticated

Timeline

How it unfolded

  1. Oct 12, 2023CVE publishedPublication date reported by the CVE source.
  2. Sep 19, 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=0 <22.3R3-EVO
  2. Affected versionversion=22.4-EVO <22.4R3-EVO
  3. Affected versionversion=23.2-EVO <23.2R1-EVO

What conditions does exploitation require?

Attack vectoradjacent
Required privilegesunauthenticated

What is affected?

Juniper Networks · Junos OS Evolvedversion=0 <22.3R3-EVO; version=22.4-EVO <22.4R3-EVO; version=23.2-EVO <23.2R1-EVO
Juniper Networks · Junos OSversion=0 <20.4R3-S7; version=21.1 <21.1R3-S4; version=21.2 <21.2R3-S5; version=21.3 <21.3R3-S4; version=21.4 <21.4R3-S4; version=22.1 <22.1R3-S4; version=22.2 <22.2R3; version=22.3 <22.3R3; version=22.4 <22.4R3

Published CVSS scores

6.5Juniper NetworksCVSS:3.1/AV:A/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.

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-617Reachable Assertion
T1499.004Endpoint Denial of Service: Application or System Exploitation

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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