Untrusted Pointer Dereference Vulnerability in Juniper Networks Junos OS
CVE-2025-59959

6.8MEDIUM

Key Information:

Vendor

Juniper Networks
Status
Junos Os
Junos Os Evolved
Vendor
CVE Published:
15 January 2026

Badges

đź‘ľ Exploit Exists

What is CVE-2025-59959?

An untrusted pointer dereference vulnerability within Juniper Networks’ routing protocol daemon (rpd) can be exploited by a local, authenticated attacker with limited privileges. When executing the command 'show route < ( receive-protocol | advertising-protocol ) bgp > detail', the presence of certain attributes in the intended output may trigger a crash and restart of the rpd, leading to service disruption. To mitigate this issue, users are advised to upgrade to the latest versions of Junos OS and Junos OS Evolved.

Affected Version(s)

Junos OS 0 < 22.4R3-S8

Junos OS 23.2 < 23.2R2-S5

Junos OS 23.4 < 23.4R2-S5

References

https://supportportal.juniper.net/
vendor-advisory
https://kb.juniper.net/JSA103148
vendor-advisory

CVSS V4

Score:
6.8
Severity:
MEDIUM
Confidentiality:
None
Integrity:
None
Availability:
High
Attack Vector:
Local
Attack Complexity:
Low
Attack Required:
None
Privileges Required:
Undefined
User Interaction:
None

Timeline

  • đź‘ľ

    Exploit known to exist

  • Vulnerability published

  • Vulnerability Reserved

.