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CVE-2023-28982

Junos OS and Junos OS Evolved: In a BGP rib sharding scenario when a route is frequently updated an rpd memory leak will occur

High7.5EPSS 0.65%
Published
Updated
Reserved
Assigned by
juniper

Description

A Missing Release of Memory after Effective Lifetime vulnerability in the routing protocol daemon of Juniper Networks Junos OS and Junos OS Evolved allows an unauthenticated, network based attacker to cause a Denial of Service (DoS). In a BGP rib sharding scenario, when an attribute of an active BGP route is updated memory will leak. As rpd memory usage increases over time the rpd process will eventually run out of memory, crash, and restart. The memory utilization can be monitored with the following CLI commands: show task memory show system processes extensive | match rpd This issue affects: Juniper Networks Junos OS 20.3 versions prior to 20.3R3-S2; 20.4 versions prior to 20.4R3-S6; 21.1 versions prior to 21.1R3; 21.2 versions prior to 21.2R3; 21.3 versions prior to 21.3R2. Juniper Networks Junos OS Evolved 20.3-EVO version 20.3R1-EVO and later versions; 20.4-EVO versions prior to 20.4R3-S6-EVO; 21.2-EVO versions prior to 21.2R3-EVO; 21.3-EVO versions prior to 21.3R2-EVO.

Timeline

  1. ID reserved

    By juniper

  2. · 19 days later

    Published

  3. · 22 months later

    Record updated

Changes after publication (a new score, a public exploit, EPSS crossing 1, 10 or 50 %, leaving KEV) are kept since November 2026; earlier ones are not known.

Scores

CVSS scores of CVE-2023-28982, by who scored it
Scored byCVSSScoreVector
juniperCNA (assigner)3.1High7.5CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
NVDNVD · Modified3.1High7.5CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
EPSS (exploitation in 30 days)
0.65% · top 49% of all CVEs (7 Nov 2026)
CISA SSVC
Exploitation: none · Automatable: yes · Technical impact: partial
Loading the EPSS history…

The list uses the assigner's score when there is one, then CISA's, then NVD's: High 7.5.

Weakness

Affected products

  • Juniper Networks · Junos OS

    • affected 20.3 – < 20.3R3-S2
    • affected 20.4 – < 20.4R3-S6
    • affected 21.1 – < 21.1R3
    • affected 21.2 – < 21.2R3
    • affected 21.3 – < 21.3R2

  • Juniper Networks · Junos OS Evolved

    • affected 20.3R1-EVO – < 20.3-EVO*
    • affected 20.4-EVO – < 20.4R3-S6-EVO
    • affected 21.2-EVO – < 21.2R3-EVO
    • affected 21.3-EVO – < 21.3R2-EVO

What to do

Solution: The following software releases have been updated to resolve this specific issue: Junos OS Evolved: 20.4R3-S6-EVO, 21.2R3-EVO, 21.3R2-EVO, 21.4R1-EVO, and all subsequent releases. Junos OS: 20.3R3-S2, 20.4R3-S6, 21.1R3, 21.2R3, 21.3R2, 21.4R1, 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 .