CVE-2025-52986
published 2025-07-11CVE-2025-52986: A Missing Release of Memory after Effective Lifetime vulnerability in the routing protocol daemon (rpd) of Juniper Networks Junos OS and Junos OS Evolved…
medium6.8CVSS 4.0
AVLACLATNPRLUINVCNVINVAHSCNSINSALEXCRXIRXARXMAVXMACXMATXMPRXMUIXMVCXMVIXMVAXMSCXMSIXMSAXSXAUYRAVXREMUX
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.
When RIB sharding is enabled and a user executes one of several routing related 'show' commands, a certain amount of memory is leaked. When all available memory has been consumed rpd will crash and restart.
The leak can be monitored with the CLI command:
show task memory detail | match task_shard_mgmt_cookie
where the allocated memory in bytes can be seen to continuously increase with each exploitation.
This issue affects:
Junos OS:
* all versions before 21.2R3-S9,
* 21.4 versions before 21.4R3-S11,
* 22.2 versions before 22.2R3-S7,
* 22.4 versions before 22.4R3-S7,
* 23.2 versions before 23.2R2-S4,
* 23.4 versions before 23.4R2-S4,
* 24.2 versions before 24.2R2,
* 24.4 versions before 24.4R1-S2, 24.4R2;
Junos OS Evolved:
* all versions before 22.2R3-S7-EVO
* 22.4-EVO versions before 22.4R3-S7-EVO,
* 23.2-EVO versions before 23.2R2-S4-EVO,
* 23.4-EVO versions before 23.4R2-S4-EVO,
* 24.2-EVO versions before 24.2R2-EVO,
* 24.4-EVO versions before 24.4R2-EVO.
Affected
31 ranges· showing 25
| Vendor | Product | Version range | Fixed in |
|---|---|---|---|
| juniper | junos | < 21.2 | 21.2 |
| juniper | junos | — | — |
| juniper | junos | — | — |
| juniper | junos | — | — |
| juniper | junos | — | — |
| juniper | junos | — | — |
| juniper | junos | — | — |
| juniper | junos | — | — |
| juniper | junos | — | — |
| juniper | junos_os | — | — |
| juniper | junos_os_evolved | < 22.2 | 22.2 |
| juniper | junos_os_evolved | — | — |
| juniper | junos_os_evolved | — | — |
| juniper | junos_os_evolved | — | — |
| juniper | junos_os_evolved | — | — |
| juniper | junos_os_evolved | — | — |
| juniper | junos_os_evolved | — | — |
| juniper_networks | junos_os | < 21.2R3-S9 | 21.2R3-S9 |
| juniper_networks | junos_os | >= 21.4 < 21.4R3-S11 | 21.4R3-S11 |
| juniper_networks | junos_os | >= 22.2 < 22.2R3-S7 | 22.2R3-S7 |
| juniper_networks | junos_os | >= 22.4 < 22.4R3-S7 | 22.4R3-S7 |
| juniper_networks | junos_os | >= 23.2 < 23.2R2-S4 | 23.2R2-S4 |
| juniper_networks | junos_os | >= 23.4 < 23.4R2-S4 | 23.4R2-S4 |
| juniper_networks | junos_os | >= 24.2 < 24.2R2 | 24.2R2 |
| juniper_networks | junos_os | >= 24.4 < 24.4R1-S2, 24.4R2 | 24.4R1-S2, 24.4R2 |