CVE-2025-52986

rpd crash via unreleased RIB shard memory

Published Jul 11, 2025 · Updated Jul 15, 2025

Memory leak in rpd in affected Juniper Networks Junos OS and Junos OS Evolved releases allows local users to crash and restart rpd. With RIB sharding enabled, routing-related show commands allocate task_shard_mgmt_cookie memory that rpd fails to release after use. A low-privilege CLI account and repeated command execution are required; exhausting available memory interrupts routing while rpd restarts.

CVSS severity6.8
Medium
EPSS probability0.12%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Memory leak in rpd in affected Juniper Networks Junos OS and Junos OS Evolved releases allows local users to crash and restart rpd. With RIB sharding enabled, routing-related show commands allocate task_shard_mgmt_cookie memory that rpd fails to release after use. A low-privilege CLI account and repeated command execution are required; exhausting available memory interrupts routing while rpd restarts.

The record

CVE
CVE-2025-52986
Published
Jul 11, 2025
Updated
Jul 15, 2025
Vendor
Juniper Networks
Product
Junos OS Evolved
Classifications
CWE-401, T1499.004
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. Jul 11, 2025CVE publishedPublication date reported by the CVE source.
  2. Jul 15, 2025Record 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=0 <22.2R3-S7-EVO
  2. Affected versionversion=22.4-EVO <22.4R3-S7-EVO
  3. Affected versionversion=23.2-EVO <23.2R2-S4-EVO
  4. Affected versionversion=23.4-EVO <23.4R2-S4-EVO
  5. Affected versionversion=24.2-EVO <24.2R2-EVO
  6. Affected versionversion=24.4-EVO <24.4R2-EVO

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

Juniper Networks · Junos OS Evolvedversion=0 <22.2R3-S7-EVO; version=22.4-EVO <22.4R3-S7-EVO; version=23.2-EVO <23.2R2-S4-EVO; version=23.4-EVO <23.4R2-S4-EVO; version=24.2-EVO <24.2R2-EVO; version=24.4-EVO <24.4R2-EVO
Juniper Networks · Junos OSversion=0 <21.2R3-S9; version=21.4 <21.4R3-S11; version=22.2 <22.2R3-S7; version=22.4 <22.4R3-S7; version=23.2 <23.2R2-S4; version=23.4 <23.4R2-S4; version=24.2 <24.2R2; version=24.4 <24.4R1-S2, 24.4R2

Published CVSS scores

5.5Juniper NetworksCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
6.8Juniper NetworksCVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:L/AU:Y/R:A/RE:M

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-401Missing Release of Memory after Effective Lifetime
T1499.004Application or System Exploitation

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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