CVE-2023-44196

Junos OS Evolved: PTX10003 Series: Packets which are not destined to the router can reach the RE

MEDIUM

6.5

CVSS Score

Published: October 12, 2023 at 11:05 PM UTC

Updated: June 17, 2026 at 06:27 AM UTC

3 products affected across 2 vendorsJunos OS EvolvedPtx10003Junos OS Evolved

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Severity

MEDIUM6.5

Exploit prediction

EPSS 0.3%

SSVC

No known exploit

Description

An Improper Check for Unusual or Exceptional Conditions in the Packet Forwarding Engine (pfe) of Juniper Networks Junos OS Evolved on PTX10003 Series allows an unauthenticated adjacent attacker to cause an impact to the integrity of the system. When specific transit MPLS packets are received by the PFE, these packets are internally forwarded to the RE. This issue is a prerequisite for CVE-2023-44195. This issue affects Juniper Networks Junos OS Evolved: * All versions prior to 20.4R3-S8-EVO; * 21.1-EVO version 21.1R1-EVO and later; * 21.2-EVO versions prior to 21.2R3-S6-EVO; * 21.3-EVO version 21.3R1-EVO and later; * 21.4-EVO versions prior to 21.4R3-S3-EVO; * 22.1-EVO versions prior to 22.1R3-S4-EVO; * 22.2-EVO versions prior to 22.2R3-S3-EVO; * 22.3-EVO versions prior to 22.3R2-S2-EVO, 22.3R3-EVO; * 22.4-EVO versions prior to 22.4R2-EVO.

Affected

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

Junos OS Evolved · Juniper

95%

Affected range stops below 20.4, so it looks safe — our inference, not a vendor statement

juniper-ptx10003 (environment)

Junos OS Evolved · Juniper Networks

60%

v < 20.4R3-S8-EVO21.1R1-EVO ≤ v < 21.1*-EVO21.2-EVO ≤ v < 21.2R3-S6-EVO21.3R1-EVO ≤ v < 21.3*-EVO21.4-EVO ≤ v < 21.4R3-S3-EVO22.1-EVO ≤ v < 22.1R3-S4-EVO22.2-EVO ≤ v < 22.2R3-S3-EVO22.3-EVO ≤ v < 22.3R2-S2-EVO, 22.3R3-EVO22.4-EVO ≤ v < 22.4R2-EVO21.1R1-EVO 21.2-EVO 21.3R1-EVO 21.4-EVO 22.1-EVO 22.2-EVO 22.3-EVO 22.4-EVO

Affected range stops below 20.4R3-S8-EVO, so it looks safe — our inference, not a vendor statement

Affected range stops below 21.1*-EVO, so it looks safe — our inference, not a vendor statement

Affected range stops below 21.2R3-S6-EVO, so it looks safe — our inference, not a vendor statement

Affected range stops below 21.3*-EVO, so it looks safe — our inference, not a vendor statement

Affected range stops below 21.4R3-S3-EVO, so it looks safe — our inference, not a vendor statement

Affected range stops below 22.1R3-S4-EVO, so it looks safe — our inference, not a vendor statement

Affected range stops below 22.2R3-S3-EVO, so it looks safe — our inference, not a vendor statement

Affected range stops below 22.3R2-S2-EVO, 22.3R3-EVO, so it looks safe — our inference, not a vendor statement

Affected range stops below 22.4R2-EVO, so it looks safe — our inference, not a vendor statement

Ptx10003 · Juniperdevice

80%

All versions

Remediation

No guide yet

No remediation guidance has been written for this CVE yet. What the record does show:

Patch and advisory references

https://supportportal.juniper.net/JSA73162

References (1)

Vendor Advisory

Source: [email protected]

https://supportportal.juniper.net/JSA73162

SSVC — Action Prioritization

SSVCNo known exploitNot automatablePartial impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

6.5MEDIUMjuniper

Attack Vector: ADJACENT_NETWORK
Complexity: LOW
Privileges: NONE
User Interaction: NONE
Scope: UNCHANGED
Confidentiality: NONE
Integrity: HIGH
Availability: NONE

Vector?

Quick Info

StatusMODIFIED

CWE

CWE-754

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