CVE-2021-0204

Local password-hash disclosure via setuid dexp

Published Jan 15, 2021 · Updated Sep 16, 2024

Sensitive information disclosure in Juniper Networks Junos OS allows local users with shell access to read local password hashes through dexp. The setuid-root delta-export utility creates database files containing sensitive configuration data and permits the invoking shell user to read them. A locally authenticated shell account is required; the documented consequence is access to dexp database contents, including local-user password hashes.

CVSS severity7.8
High
EPSS probability0.30%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Sensitive information disclosure in Juniper Networks Junos OS allows local users with shell access to read local password hashes through dexp. The setuid-root delta-export utility creates database files containing sensitive configuration data and permits the invoking shell user to read them. A locally authenticated shell account is required; the documented consequence is access to dexp database contents, including local-user password hashes.

The record

CVE
CVE-2021-0204
Published
Jan 15, 2021
Updated
Sep 16, 2024
Vendor
Juniper Networks
Product
Junos OS
Classifications
CWE-269, CWE-250, T1068
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. Jan 15, 2021CVE publishedPublication date reported by the CVE source.
  2. Sep 16, 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=15.1 <15.1R7-S8
  2. Affected versionversion=15.1X49 <15.1X49-D230
  3. Affected versionversion=17.3 <17.3R3-S9
  4. Affected versionversion=17.4 <17.4R2-S12, 17.4R3-S3
  5. Affected versionversion=18.1 <18.1R3-S11
  6. Affected versionversion=18.2 <18.2R3-S6
  7. Affected versionversion=18.2X75 <18.2X75-D34
  8. Affected versionversion=18.3 <18.3R3-S4
  9. Affected versionversion=18.4 <18.4R2-S7, 18.4R3-S6
  10. Affected versionversion=19.1 <19.1R1-S6, 19.1R2-S2, 19.1R3-S3
  11. Affected versionversion=19.2 <19.2R1-S5, 19.2R3-S1
  12. Affected versionversion=19.3 <19.3R2-S5, 19.3R3-S1
  13. Affected versionversion=19.4 <19.4R1-S3, 19.4R2-S2, 19.4R3-S1
  14. Affected versionversion=20.1 <20.1R1-S4, 20.1R2
  15. Affected versionversion=20.2 <20.2R1-S2, 20.2R2

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

Juniper Networks · Junos OSversion=15.1 <15.1R7-S8; version=15.1X49 <15.1X49-D230; version=17.3 <17.3R3-S9; version=17.4 <17.4R2-S12, 17.4R3-S3; version=18.1 <18.1R3-S11; version=18.2 <18.2R3-S6; version=18.2X75 <18.2X75-D34; version=18.3 <18.3R3-S4; version=18.4 <18.4R2-S7, 18.4R3-S6; version=19.1 <19.1R1-S6, 19.1R2-S2, 19.1R3-S3; version=19.2 <19.2R1-S5, 19.2R3-S1; version=19.3 <19.3R2-S5, 19.3R3-S1; version=19.4 <19.4R1-S3, 19.4R2-S2, 19.4R3-S1; version=20.1 <20.1R1-S4, 20.1R2; version=20.2 <20.2R1-S2, 20.2R2

Published CVSS scores

7.8Juniper Networks, Inc.CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
7.2NISTAV:L/AC:L/Au:N/C:C/I:C/A:C

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.

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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
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-269Improper Privilege Management
CWE-250Execution with Unnecessary Privileges
T1068Exploitation for Privilege Escalation

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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