CVE-2023-22401

Junos OS and Junos OS Evolved: PTX10008, PTX10016: When a specific SNMP MIB is queried the FPC will crash

HIGH

7.5

CVSS Score

Published: January 12, 2023 at 12:00 AM UTC

Updated: June 17, 2026 at 05:35 AM UTC

3 products affected across 2 vendorsJunosJunos OS EvolvedJunos OS Evolved

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Severity

HIGH7.5

Exploit prediction

EPSS 0.6%

SSVC

No known exploit

Description

An Improper Validation of Array Index vulnerability in the Advanced Forwarding Toolkit Manager daemon (aftmand) of Juniper Networks Junos OS and Junos OS Evolved allows an unauthenticated, network-based attacker to cause a Denial of Service (DoS). On the PTX10008 and PTX10016 platforms running Junos OS or Junos OS Evolved, when a specific SNMP MIB is queried this will cause a PFE crash and the FPC will go offline and not automatically recover. A system restart is required to get the affected FPC in an operational state again. This issue affects: Juniper Networks Junos OS 22.1 version 22.1R2 and later versions; 22.1 versions prior to 22.1R3; 22.2 versions prior to 22.2R2. Juniper Networks Junos OS Evolved 21.3-EVO version 21.3R3-EVO and later versions; 21.4-EVO version 21.4R1-S2-EVO, 21.4R2-EVO and later versions prior to 21.4R2-S1-EVO; 22.1-EVO version 22.1R2-EVO and later versions prior to 22.1R3-EVO; 22.2-EVO versions prior to 22.2R1-S1-EVO, 22.2R2-EVO.

Affected

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

Junos OS Evolved · Juniper

95%

21.3 r3 21.4 r1-s2 21.4 r2 22.1 r2 22.2 r1 22.2 r2

Junos · Juniper Networks

95%

22.1R2 ≤ v < 22.1*22.2 ≤ v < 22.2R222.1 r2 22.1 r2-s2 22.1R2 22.2 22.2 r1 22.2 r1-s1 22.2 r1-s2

Affected range stops below 22.1*, so it looks safe — our inference, not a vendor statement

Affected range stops below 22.2R2, so it looks safe — our inference, not a vendor statement

Junos OS Evolved · Juniper Networks

60%

21.3R3-EVO ≤ v < 21.3-EVO*21.4R1-S2-EVO, 21.4R2-EVO ≤ v < 21.4-EVO*22.1R2-EVO ≤ v < 22.1-EVO*22.2-EVO ≤ v < 22.2R1-S1-EVO, 22.2R2-EVO21.3R3-EVO 21.4R1-S2-EVO 21.4R2-EVO 22.1R2-EVO 22.2-EVO

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

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

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

Affected range stops below 22.2R1-S1-EVO, 22.2R2-EVO, so it looks safe — our inference, not a vendor statement

Remediation

No guide yet

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

Patch and advisory references

https://kb.juniper.net/JSA70197

References (1)

Vendor Advisory

Source: [email protected]

https://kb.juniper.net/JSA70197

SSVC — Action Prioritization

SSVCNo known exploitNot automatablePartial impact

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

CVSS

7.5HIGHjuniper

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

Vector?

Quick Info

StatusMODIFIED

CWE

CWE-129

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