CVE-2026-101994 Juniper Networks Junos OS - Information Disclosure & Denial of Service

Juniper Networks Junos OS and Junos OS Evolved contain an improper handling of length parameter inconsistency vulnerability in the l2ald daemon, letting attackers controlling or impersonating MC-LAG ICCP peers disclose heap memory or cause denial of service, exploit requires attacker to control or impersonate MC-LAG ICCP peer.

CVSS base score 7.1 /10
High
CISA KEV
Not listed
Public exploit
None known
Authentication
Not required
View the NVD record ↗

Details

Type
Information Disclosure
Impact
Information Disclosure, Denial Of Service
CVSS vector
CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:H
Published
14 October 2026
Updated
15 October 2026
Weakness
CWE-130

Vendor fix

Update to the latest Junos OS and Junos OS Evolved versions 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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