CVE-2020-1687
CVE.org · Published
- Record status
- Published
- Identifier year (not publication year)
- 2020
- Source publication
- Source updated
- Imported by cveboard
- Source snapshot
- cve_2026-10-24_midnight_baseline ·
CNA source text (English)
Junos OS: EX4300-MP/EX4600/QFX5K Series: High CPU load due to receipt of specific layer 2 frames in EVPN-VXLAN deployment.
On Juniper Networks EX4300-MP Series, EX4600 Series and QFX5K Series deployed in (Ethernet VPN) EVPN-(Virtual Extensible LAN) VXLAN configuration, receipt of a stream of specific VXLAN encapsulated layer 2 frames can cause high CPU load, which could lead to network protocol operation issue and traffic interruption. This issue affects devices that are configured as a Layer 2 or Layer 3 gateway of an EVPN-VXLAN deployment. The offending layer 2 frames that cause the issue originate from a different access switch that get encapsulated within the same EVPN-VXLAN domain. This issue affects Juniper Networks Junos OS on EX4300-MP Series, EX4600 Series and QFX5K Series: 17.3 versions prior to 17.3R3-S9; 17.4 versions prior to 17.4R2-S11, 17.4R3-S2, 17.4R3-S3; 18.1 versions prior to 18.1R3-S11; 18.2 versions prior to 18.2R3-S5; 18.3 versions prior to 18.3R2-S4, 18.3R3-S3; 18.4 versions prior to 18.4R2-S5, 18.4R3-S4; 19.1 versions prior to 19.1R2-S2, 19.1R3-S2; 19.2 versions prior to 19.2R1-S5, 19.2R2-S1, 19.2R3; 19.3 versions prior to 19.3R2-S4, 19.3R3; 19.4 versions prior to 19.4R1-S3, 19.4R2-S1, 19.4R3; 20.1 versions prior to 20.1R1-S3, 20.1R2.
Scoped product and version facts
Fix information unknown; no fixed version is derived here. Missing information does not prove that no fix exists.
Exploitation unknown; this catalogue does not assess exploitation.
Junos OS
- Vendor
- Juniper Networks
- Product
- Junos OS
- Platforms
- EX4300-MP Series, EX4600Series, QFX5K Series
- Default status
Unknown
| Version (version) | Status (status) | Version scheme (versionType) | Exclusive end (lessThan) | Inclusive end (lessThanOrEqual) | Status changes (at → status) |
|---|---|---|---|---|---|
| 17.3 | affected | custom | 17.3R3-S9 | Unavailable | None listed |
| 17.4 | affected | custom | 17.4R2-S11, 17.4R3-S2, 17.4R3-S3 | Unavailable | None listed |
| 18.1 | affected | custom | 18.1R3-S11 | Unavailable | None listed |
| 18.2 | affected | custom | 18.2R3-S5 | Unavailable | None listed |
| 18.3 | affected | custom | 18.3R2-S4, 18.3R3-S3 | Unavailable | None listed |
| 18.4 | affected | custom | 18.4R2-S5, 18.4R3-S4 | Unavailable | None listed |
| 19.1 | affected | custom | 19.1R2-S2, 19.1R3-S2 | Unavailable | None listed |
| 19.2 | affected | custom | 19.2R1-S5, 19.2R2-S1, 19.2R3 | Unavailable | None listed |
| 19.3 | affected | custom | 19.3R2-S4, 19.3R3 | Unavailable | None listed |
| 19.4 | affected | custom | 19.4R1-S3, 19.4R2-S1, 19.4R3 | Unavailable | None listed |
| 20.1 | affected | custom | 20.1R1-S3, 20.1R2 | Unavailable | None listed |