Stack-Based Buffer Overflow in Junos OS Routing Protocol Daemon
CVE-2026-101981

8.7HIGH

Key Information:

Vendor

Juniper Networks
Status
Junos Os
Junos Os Evolved
Vendor
CVE Published:
14 October 2026

Badges

👾 Exploit Exists

What is CVE-2026-101981?

A vulnerability exists in the routing protocol daemon (rpd) of Juniper Networks' Junos OS and Junos OS Evolved. This stack-based buffer overflow can be triggered by an unauthenticated adjacent Label Distribution Protocol (LDP) peer sending a specially crafted Label Mapping message, leading to a crash of the rpd process or the potential execution of arbitrary code. This vulnerability underlines the importance of implementing appropriate security measures in configurations involving routing protocols.

Affected Version(s)

Junos OS 23.4 < 23.4R2-S8.13

Junos OS 24.2 < 24.2R2-S5.5

Junos OS 24.4 < 24.4R2-S5

References

https://supportportal.juniper.net/JSA112187
vendor-advisory

CVSS V4

Score:
8.7
Severity:
HIGH
Confidentiality:
High
Integrity:
High
Availability:
High
Attack Vector:
Adjacent Network
Attack Complexity:
Low
Attack Required:
None
Privileges Required:
Undefined
User Interaction:
None

Timeline

  • 👾

    Exploit known to exist

  • Vulnerability published

  • Vulnerability Reserved

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