Instituto Nacional de ciberseguridad. Sección Incibe
Instituto Nacional de Ciberseguridad. Sección INCIBE-CERT

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CVE-2025-52986

Severity CVSS v4.0:
MEDIUM
Type:
Unavailable / Other
Publication date:
11/07/2025
Last modified:
15/07/2025

Description

A Missing Release of Memory after Effective Lifetime vulnerability in the routing protocol daemon (rpd) of Juniper Networks Junos OS and Junos OS Evolved allows a local, low privileged user to cause an impact to the availability of the device.<br /> <br /> When RIB sharding is enabled and a user executes one of several routing related &amp;#39;show&amp;#39; commands, a certain amount of memory is leaked. When all available memory has been consumed rpd will crash and restart.<br /> <br /> The leak can be monitored with the CLI command:<br /> <br /> <br /> <br /> show task memory detail | match task_shard_mgmt_cookie<br /> <br /> <br /> <br /> where the allocated memory in bytes can be seen to continuously increase with each exploitation.<br /> <br /> <br /> <br /> This issue affects:<br /> <br /> Junos OS:<br /> <br /> * all versions before 21.2R3-S9,<br /> * 21.4 versions before 21.4R3-S11,<br /> * 22.2 versions before 22.2R3-S7,<br /> * 22.4 versions before 22.4R3-S7,<br /> * 23.2 versions before 23.2R2-S4, <br /> * 23.4 versions before 23.4R2-S4,<br /> * 24.2 versions before 24.2R2,<br /> * 24.4 versions before 24.4R1-S2, 24.4R2;<br /> <br /> <br /> Junos OS Evolved:<br /> <br /> * all versions before 22.2R3-S7-EVO<br /> * 22.4-EVO versions before 22.4R3-S7-EVO,<br /> * 23.2-EVO versions before 23.2R2-S4-EVO,<br /> * 23.4-EVO versions before 23.4R2-S4-EVO,<br /> * 24.2-EVO versions before 24.2R2-EVO, <br /> * 24.4-EVO versions before 24.4R2-EVO.

Impact

Vector 4.0
CVSS: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 v4.0 Severity and Metrics:

Base Score: 6.80 MEDIUM
Vector: CVSS: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

Attack Vector (AV): Local
Attack Complexity (AC): Low
Attack Requirements (AT): None
Privileges Required (PR): Low
User Interaction (UI): None
Confidentiality (VC): None
Integrity (VI): None
Availability (VA): High
Confidentiality (SC): None
Integrity (SI): None
Availability (SA): Low
Automatable (AU): Yes
Recovery (R): Automatic
Vulnerability Response Effort (RE): Moderate

Base Score 4.0
6.80
Severity 4.0
MEDIUM
Vector 3.x
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H CVSS v3.1 Severity and Metrics:

Base Score: 5.50 MEDIUM
Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Attack Vector (AV): Local
Attack Complexity (AC): Low
Privileges Required (PR): Low
User Interaction (UI): None
Scope (S): Unchanged
Confidentiality (C): None
Integrity (I): None
Availability (A): High

Base Score 3.x
5.50
Severity 3.x
MEDIUM

References to Advisories, Solutions, and Tools