Description
A Buffer Copy without Checking Size of Input ('Classic Buffer Overflow') vulnerability in the advanced forwarding toolkit (evo-aftmand/evo-pfemand) of Juniper Networks Junos OS Evolved on PTX Series or QFX5000 Series allows an unauthenticated, adjacent attacker to cause a Denial of Service (DoS).An attacker sending crafted multicast packets will cause line cards running evo-aftmand/evo-pfemand to crash and restart or non-line card devices to crash and restart. Continued receipt and processing of these packets will sustain the Denial of Service (DoS) condition.
This issue affects Junos OS Evolved PTX Series:
* All versions before 22.4R3-S8-EVO, * from 23.2 before 23.2R2-S5-EVO, * from 23.4 before 23.4R2-EVO, * from 24.2 before 24.2R2-EVO, * from 24.4 before 24.4R2-EVO.
This issue affects Junos OS Evolved on QFX5000 Series:
* 22.2-EVO version before 22.2R3-S7-EVO, * 22.4-EVO version before 22.4R3-S7-EVO, * 23.2-EVO versions before 23.2R2-S4-EVO, * 23.4-EVO versions before 23.4R2-S5-EVO, * 24.2-EVO versions before 24.2R2-S1-EVO, * 24.4-EVO versions before 24.4R1-S3-EVO, 24.4R2-EVO.
This issue does not affect Junos OS Evolved on QFX5000 Series versions before: 21.2R2-S1-EVO, 21.2R3-EVO, 21.3R2-EVO, 21.4R1-EVO, and 22.1R1-EVO.
Metrics
CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:HWeakness enumeration
Affected software
| Vendor | Product | Versions |
|---|---|---|
| Juniper Networks | Junos OS Evolved | < 22.4R3-S8-EVO; >= 23.2, < 23.2R2-S5-EVO; >= 23.4, < 23.4R2-EVO; >= 24.2, < 24.2R2-EVO; >= 24.4, < 24.4R2-EVO |
| Juniper Networks | Junos OS Evolved | >= 22.2, < 22.2R3-S7-EVO; >= 22.4, < 22.4R3-S7-EVO; >= 23.2, < 23.2R2-S4-EVO; >= 23.4, < 23.4R2-S5-EVO; >= 24.2, < 24.2R2-S1-EVO; >= 24.4, < 24.4R1-S3-EVO, 24.4R2-EVO |
References
- https://kb.juniper.net/JSA103159Vendor Advisory
Timeline
- Published
- Apr 9, 2026
- Last modified
- Oct 7, 2026
- NVD status
- Analyzed