CVE-2026-102049
CVE-2026-102049 · Junos OS and Junos OS Evolved: An attacker causes l2cpd crash or root code execution when Unified Access Policy is enabled
This page contains facts from public vulnerability sources. Check the original advisory before updating.
A Stack-based Buffer Overflow vulnerability in the l2cpd process of Juniper Networks Junos OS and Junos OS Evolved allows an adjacent unauthenticated attacker to cause a denial of service or execute arbitrary code with root privileges via LLDP traffic received on an interface with Unified Access Policy enabled.
CVSS 8.7 · High · EPSS 0.3% · Fix available
- Published
- Updated
Affected products and versions
junos os
- Versions
- ≥ 0, < 23.2R2-S7.7: Affected (custom)
- ≥ 23.4, < 23.4R2-S8.13: Affected (custom)
- ≥ 24.2, < 24.2R2-S5.5: Affected (custom)
- ≥ 24.4, < 24.4R2-S5: Affected (custom)
- ≥ 25.2, < 25.2R2-S2: Affected (custom)
- ≥ 25.4, < 25.4R1-S3: Affected (custom)
- ≥ 26.2, < 26.2R1-S2: Affected (custom)
Update to 23.2R2-S7.7
junos os evolved
- Versions
- ≥ 0, < 23.2R2-S7.7-EVO: Affected (custom)
- ≥ 23.4, < 23.4R2-S8.11-EVO: Affected (custom)
- ≥ 24.2, < 24.2R2-S5.6-EVO: Affected (custom)
- ≥ 24.4, < 24.4R2-S5-EVO: Affected (custom)
- ≥ 25.2, < 25.2R2-S2-EVO: Affected (custom)
- ≥ 25.4, < 25.4R1-S3-EVO: Affected (custom)
- ≥ 26.2, < 26.2R1-S2-EVO: Affected (custom)
- 23.4X100: Affected (custom)
- ≥ 25.2X100, < 25.2X100-D35-EVO: Affected (custom)
- ≥ 25.4X300, < 25.4X300-D40-EVO: Affected (custom)
Update to 23.2R2-S7.7-EVO