CVE-2026-102182 Juniper Networks Junos OS - Remote Code Execution

Juniper Networks Junos OS on MX Series < 21.2R3-S11, 21.4 < 21.4R3-S12, 22.2 < 22.2R3-S8, 22.3 < 22.3R3-S5, 22.4 < 22.4R3-S9 contains a stack-based buffer overflow caused by improper handling of IKE certificate-based packets in the kmd component, letting unauthenticated network attackers execute code as root remotely, exploit requires crafted IKE certificate-based packets.

CVSS base score 9.8 /10
Critical
CISA KEV
Not listed
Public exploit
None known
Authentication
Not required
View the NVD record ↗

Details

Type
Remote Code Execution
Impact
Remote Code Execution
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Published
14 October 2026
Updated
15 October 2026
Weakness
CWE-121

Vendor fix

Update to 21.2R3-S11, 21.4R3-S12, 22.2R3-S8, 22.3R3-S5, 22.4R3-S9 or later versions.

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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