CVE-2026-101965 Juniper Networks Junos OS Evolved - Use of Externally-Controlled Format String

Juniper Networks Junos OS Evolved contains a use of externally-controlled format string vulnerability in the gRPC daemon, letting authenticated network attackers cause telemetry-service disruption, information disclosure, or root-level code execution via crafted gNMI messages.

CVSS base score 8.8 /10
High
CISA KEV
Not listed
Public exploit
None known
Authentication
Required
View the NVD record ↗

Details

Type
Use of Externally-Controlled Format String
Impact
Denial Of Service, Information Disclosure, Remote Code Execution
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Published
14 October 2026
Updated
15 October 2026
Weakness
CWE-134

Vendor fix

Update to the latest Junos OS Evolved version with the fix applied.

Patching closes this CVE. It does not tell you which of your systems run the affected version, or what else is exposed alongside them.

References

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