CVE-2026-101994 — Junos OS and Junos OS Evolved: Malformed MC-LAG ICCP message causes l2ald heap disclosure or crash

Description (CNA)

An Improper Handling of Length Parameter Inconsistency vulnerability in the l2ald daemon of Juniper Networks Junos OS and Junos OS Evolved allows an attacker who can control or impersonate a configured MC-LAG ICCP peer to disclose process heap memory or cause a denial of service via a malformed ICCP message.

Affected (CNA)

Vendor / product	Versions
Juniper Networks / Junos OS	affected 0 before 23.2R2-S7.7; affected 23.4 before 23.4R2-S8.13; affected 24.2 before 24.2R2-S5.5; affected 24.4 before 24.4R2-S5; affected 25.2 before 25.2R2-S2; affected 25.4 before 25.4R1-S3; affected 26.2 before 26.2R1-S2
Juniper Networks / Junos OS Evolved	affected 0 before 23.2R2-S7.7-EVO; affected 23.4 before 23.4R2-S8.11-EVO; affected 24.2 before 24.2R2-S5.6-EVO; affected 24.4 before 24.4R2-S5-EVO; affected 25.2 before 25.2R2-S2-EVO; affected 25.4 before 25.4R1-S3-EVO; affected 26.2 before 26.2R1-S2-EVO; affected 23.4X100; affected 25.2X100 before 25.2X100-D35-EVO; affected 25.4X300 before 25.4X300-D40-EVO

CWE

CWE-130

References

https://supportportal.juniper.net/JSA112187

ADP enrichment

CISA-ADP

No English description supplied.

No references supplied.