CVE-2020-1619

Underlying host access by high-privileged local users

Published Apr 8, 2020 · Updated Sep 17, 2024

Privilege escalation in Junos OS on NG-RE platforms allows local users with high privileges to access the underlying WRL host. Juniper has not published the flawed component or operation; public details identify only NG-RE systems using vmhost as affected. Exploitation requires an authenticated high-privilege Junos OS account on an affected QFX10K, EX9200, MX, or PTX device.

CVSS severity6.0
Medium
EPSS probability0.32%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Privilege escalation in Junos OS on NG-RE platforms allows local users with high privileges to access the underlying WRL host. Juniper has not published the flawed component or operation; public details identify only NG-RE systems using vmhost as affected. Exploitation requires an authenticated high-privilege Junos OS account on an affected QFX10K, EX9200, MX, or PTX device.

The record

CVE
CVE-2020-1619
Published
Apr 8, 2020
Updated
Sep 17, 2024
Vendor
Juniper Networks
Product
Junos OS
Classifications
CWE-20, CWE-264, T1611
Attack vector
local
Privileges
admin

Timeline

How it unfolded

  1. Apr 8, 2020CVE publishedPublication date reported by the CVE source.
  2. Sep 17, 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=16.1 <16.1R7-S6
  2. Affected versionversion=16.2 <16.2R2-S11
  3. Affected versionversion=17.1 <17.1R2-S11, 17.1R3
  4. Affected versionversion=17.2 <17.2R1-S9, 17.2R3-S3 changes=[{"at":"17.2R2","status":"affected"}]
  5. Affected versionversion=17.3 <17.3R2-S5, 17.3R3-S7
  6. Affected versionversion=17.4 <17.4R2-S7, 17.4R3
  7. Affected versionversion=18.1 <18.1R3-S4
  8. Affected versionversion=18.2 <18.2R3
  9. Affected versionversion=18.2X75 <18.2X75-D50
  10. Affected versionversion=18.3 <18.3R2
  11. Affected versionversion=18.4 <18.4R2

What conditions does exploitation require?

Attack vectorlocal
Required privilegesadmin

What is affected?

Juniper Networks · Junos OSversion=16.1 <16.1R7-S6; version=16.2 <16.2R2-S11; version=17.1 <17.1R2-S11, 17.1R3; version=17.2 <17.2R1-S9, 17.2R3-S3 changes=[{"at":"17.2R2","status":"affected"}]; version=17.3 <17.3R2-S5, 17.3R3-S7; version=17.4 <17.4R2-S7, 17.4R3; version=18.1 <18.1R3-S4; version=18.2 <18.2R3; version=18.2X75 <18.2X75-D50; version=18.3 <18.3R2; version=18.4 <18.4R2

Published CVSS scores

6.7NIST NVDCVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H
4.6NIST NVDAV:L/AC:L/Au:N/C:P/I:P/A:P
6.0Juniper Networks, Inc.CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:N

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)
Vectorlocal
Privilegesadmin
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-20Improper Input Validation
CWE-264Permissions, Privileges, and Access Controls
T1611Escape to Host

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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