Out-of-bounds Read Vulnerability in Junos OS by Juniper Networks
CVE-2026-102056

7.1HIGH

Key Information:

Vendor

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

Badges

👾 Exploit Exists

What is CVE-2026-102056?

An Out-of-bounds Read vulnerability has been identified in the cfmd process of Juniper Networks' Junos OS and Junos OS Evolved. This issue allows an adjacent-network attacker to exploit the vulnerability by sending a specially crafted CFM Message to a configured interface. Successfully exploiting this flaw may lead to the crashing of the daemon and the disclosure of limited process memory, posing risks to the confidentiality and availability of network services.

Affected Version(s)

Junos OS 0 < 23.2R2-S7.7

Junos OS 23.4 < 23.4R2-S8.13

Junos OS 24.2 < 24.2R2-S5.5

References

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

CVSS V4

Score:
7.1
Severity:
HIGH
Confidentiality:
Low
Integrity:
None
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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