CVE-2026-102182 PUBLISHED

Junos OS: MX Series: Certificate-based IKE packets cause root-level code execution

Assigner: juniper
Reserved: 28.09.2026 Published: 14.10.2026 Updated: 15.10.2026

A Stack-based Buffer Overflow vulnerability in the kmd component of Juniper Networks Junos OS on MX Series allows an unauthenticated network attacker to execute code as root via specific IKE certificate-based packets.

This issue affects Junos OS on MX Series:

  • All versions before 21.2R3-S11;
  • from 21.4 before 21.4R3-S12;
  • from 22.2 before 22.2R3-S8;
  • from 22.3 before 22.3R3-S5;
  • from 22.4 before 22.4R3-S9;

Metrics

CVSS Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:L/AU:Y/R:A/V:C/RE:M
CVSS Score: 9.3

Product Status

Vendor Juniper Networks
Product Junos OS
Versions Default: unaffected
  • affected from 0 to 23.2R2-S7.7 (excl.)
  • affected from 23.4 to 23.4R2-S8.13 (excl.)
  • affected from 24.2 to 24.2R2-S5.5 (excl.)
  • affected from 24.4 to 24.4R2-S5 (excl.)
  • affected from 25.2 to 25.2R2-S2 (excl.)
  • affected from 25.4 to 25.4R1-S3 (excl.)
  • affected from 26.2 to 26.2R1-S2 (excl.)

Exploits

Juniper SIRT is not aware of any malicious exploitation of this vulnerability.

Workarounds

There are no known workarounds for this issue.

Solutions

The following software releases have been updated to resolve this specific issue:

Junos OS: 23.2R2-S7.7, 23.4R2-S8.13, 24.2R2-S5.5, 24.4R2-S5, 25.2R2-S2, 25.4R1-S3, 25.4R2, 26.2R1-S2, 26.2R2, 26.4R1, and all subsequent releases.

Note: For Junos OS releases 23.2, 23.4, and 24.2, specific respins have been referenced. Previously published versions of these releases have been rebuilt to resolve the security vulnerabilities identified in this advisory.

References

Problem Types

  • CWE-121 Stack-based Buffer Overflow CWE