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CVE-2020-1629

Junos OS: A race condition vulnerability may cause RPD daemon to crash when processing a BGP NOTIFICATION message.

Medium5.9EPSS 0.68%
Published
Updated
Reserved
Assigned by
juniper

Description

A race condition vulnerability on Juniper Network Junos OS devices may cause the routing protocol daemon (RPD) process to crash and restart while processing a BGP NOTIFICATION message. This issue affects Juniper Networks Junos OS: 16.1 versions prior to 16.1R7-S6; 16.2 versions prior to 16.2R2-S11; 17.1 versions prior to 17.1R2-S11, 17.1R3-S1; 17.2 versions prior to 17.2R1-S9, 17.2R3-S3; 17.2 version 17.2R2 and later versions; 17.2X75 versions prior to 17.2X75-D105, 17.2X75-D110; 17.3 versions prior to 17.3R2-S5, 17.3R3-S6; 17.4 versions prior to 17.4R2-S7, 17.4R3; 18.1 versions prior to 18.1R3-S8; 18.2 versions prior to 18.2R3-S3; 18.2X75 versions prior to 18.2X75-D410, 18.2X75-D420, 18.2X75-D50, 18.2X75-D60; 18.3 versions prior to 18.3R1-S5, 18.3R2-S2, 18.3R3; 18.4 versions prior to 18.4R2-S2, 18.4R3; 19.1 versions prior to 19.1R1-S2, 19.1R2; 19.2 versions prior to 19.2R1-S4, 19.2R2. This issue does not affect Juniper Networks Junos OS prior to version 16.1R1.

Scores

CVSS scores of CVE-2020-1629, by who scored it
Scored byCVSSScoreVector
juniperCNA (assigner)3.1Medium5.9CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H
NVDNVD · Modified3.1Medium5.9CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H
EPSS (exploitation in 30 days)
0.68% · top 47% of all CVEs (6 Nov 2026)
Loading the EPSS history…

The list uses the assigner's score when there is one, then CISA's, then NVD's: Medium 5.9.

Weakness

Affected products

  • Juniper Networks · Junos OS

    • affected 16.1 – < 16.1R7-S6
    • affected 16.2 – < 16.2R2-S11
    • affected 17.1 – < 17.1R2-S11, 17.1R3-S1
    • affected 17.2 – < 17.2R1-S9, 17.2R3-S3
    • affected 17.2X75 – < 17.2X75-D105, 17.2X75-D110
    • affected 17.3 – < 17.3R2-S5, 17.3R3-S6
    • affected 17.4 – < 17.4R2-S7, 17.4R3
    • affected 18.1 – < 18.1R3-S8
    • affected 18.2 – < 18.2R3-S3
    • affected 18.2X75 – < 18.2X75-D410, 18.2X75-D420, 18.2X75-D50, 18.2X75-D60
    • affected 18.3 – < 18.3R1-S5, 18.3R2-S2, 18.3R3
    • affected 18.4 – < 18.4R2-S2, 18.4R3
    • affected 19.1 – < 19.1R1-S2, 19.1R2
    • affected 19.2 – < 19.2R1-S4, 19.2R2

What to do

Solution: The following software releases have been updated to resolve this specific issue Junos OS: 16.1R7-S6, 16.2R2-S11, 17.1R2-S11, 17.1R3-S1, 17.2R1-S9, 17.2R3-S3, 17.2X75-D105, 17.2X75-D110, 17.3R2-S5, 17.3R3-S6, 17.4R2-S7, 17.4R3, 18.1R3-S8, 18.2R3-S3, 18.2X75-D410, 18.2X75-D420, 18.2X75-D50, 18.2X75-D60, 18.3R1-S5, 18.3R2-S2, 18.3R3, 18.4R2-S2, 18.4R3, 19.1R1-S2, 19.1R2, 19.2R1-S4, 19.2R2, 19.3R1, and all subsequent releases.

Workaround: There are no known workarounds for this issue.

Exploitation: Juniper SIRT is not aware of any malicious exploitation of this vulnerability.

References (1)

Sources

The same CVE in the primary databases and aggregators, to check against.

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Record last updated .