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CVE-2024-39537

Junos OS Evolved: ACX7000 Series: Ports which have been inadvertently exposed can be reached over the network

MEDIUM
6.5
CVSS Score
Published: July 11, 2024 at 04:14 PM UTC
Updated: June 17, 2026 at 07:42 AM UTC
2 products affected across 2 vendorsJunos OS EvolvedJunos OS Evolved

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Severity
MEDIUM6.5
Exploit prediction
EPSS 0.3%
SSVC
No known exploit

Description

An Improper Restriction of Communication Channel to Intended Endpoints vulnerability in Juniper Networks Junos OS Evolved on ACX 7000 Series allows an unauthenticated, network-based attacker to cause a limited information disclosure and availability impact to the device. Due to a wrong initialization, specific processes which should only be able to communicate internally within the device can be reached over the network via open ports. This issue affects Junos OS Evolved on ACX 7000 Series: * All versions before 21.4R3-S7-EVO, * 22.2-EVO versions before 22.2R3-S4-EVO, * 22.3-EVO versions before 22.3R3-S3-EVO, * 22.4-EVO versions before 22.4R3-S2-EVO, * 23.2-EVO versions before 23.2R2-EVO, * 23.4-EVO versions before 23.4R1-S1-EVO, 23.4R2-EVO.

Affected

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

Junos OS Evolved· Juniper
95%
v < 21.4v < 21.4r3-s722.2 ≤ v < 22.2r3-s422.3 ≤ v < 22.3r3-s322.4 ≤ v < 22.4r3-s223.2 ≤ v < 23.2r223.4 ≤ v < 23.4r1-s123.4 ≤ v < 23.4r221.421.4 r121.4 r1-s121.4 r1-s221.4 r221.4 r2-s121.4 r2-s221.4 r321.4 r3-s121.4 r3-s221.4 r3-s321.4 r3-s421.4 r3-s521.4 r3-s622.222.2 r122.2 r1-s122.2 r1-s222.2 r222.2 r2-s122.2 r2-s222.2 r322.2 r3-s122.2 r3-s222.2 r3-s322.322.3 r122.3 r1-s122.3 r1-s222.3 r222.3 r2-s122.3 r2-s222.3 r322.3 r3-s122.3 r3-s222.422.4 r122.4 r1-s122.4 r1-s222.4 r222.4 r2-s122.4 r2-s222.4 r322.4 r3-s123.223.2 r123.2 r1-s123.2 r1-s223.423.4 r123.4 r2
Affected range stops below 21.4r3-s7, so it looks safe — our inference, not a vendor statement
Affected range stops below 22.2r3-s4, so it looks safe — our inference, not a vendor statement
Affected range stops below 22.3r3-s3, so it looks safe — our inference, not a vendor statement
Affected range stops below 22.4r3-s2, so it looks safe — our inference, not a vendor statement
Affected range stops below 23.2r2, so it looks safe — our inference, not a vendor statement
Affected range stops below 23.4r1-s1, so it looks safe — our inference, not a vendor statement
Affected range stops below 23.4r2, so it looks safe — our inference, not a vendor statement
juniper-acx7020 (environment) · juniper-acx7024 (environment) · juniper-acx7024x (environment) · juniper-acx7100 (environment) · juniper-acx7300 (environment) · juniper-acx7509 (environment)
Junos OS Evolved· Juniper Networks
60%
v < 21.4R3-S7-EVO22.2-EVO ≤ v < 22.2R3-S4-EVO22.3-EVO ≤ v < 22.3R3-S3-EVO22.4-EVO ≤ v < 22.4R3-S2-EVO23.2-EVO ≤ v < 23.2R2-EVO23.4-EVO ≤ v < 23.4R1-S1-EVO, 23.4R2-EVO22.2-EVO22.3-EVO22.4-EVO23.2-EVO23.4-EVO
Affected range stops below 21.4R3-S7-EVO, so it looks safe — our inference, not a vendor statement
Affected range stops below 22.2R3-S4-EVO, so it looks safe — our inference, not a vendor statement
Affected range stops below 22.3R3-S3-EVO, so it looks safe — our inference, not a vendor statement
Affected range stops below 22.4R3-S2-EVO, so it looks safe — our inference, not a vendor statement
Affected range stops below 23.2R2-EVO, so it looks safe — our inference, not a vendor statement
Affected range stops below 23.4R1-S1-EVO, 23.4R2-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

References (1)

Vendor Advisory
Source: [email protected]
https://supportportal.juniper.net/JSA82997

SSVC — Action Prioritization

SSVCNo known exploitAutomatablePartial impact

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

CVSS

6.5MEDIUMjuniper
Attack Vector
NETWORK
Complexity
LOW
Privileges
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
LOW
Integrity
NONE
Availability
LOW
Vector?

Quick Info

StatusANALYZED
CWE
CWE-923

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