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.

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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

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