CVE-2026-21910 (CNNVD-202601-2540)
中文标题:
Juniper Networks Junos OS 代码问题漏洞
英文标题:
Junos OS: EX4k Series, QFX5k Series: In an EVPN-VXLAN configuration link flaps cause Inter-VNI traffic drop
漏洞描述
中文描述:
Juniper Networks Junos OS是美国瞻博网络(Juniper Networks)公司的一套专用于该公司的硬件设备的网络操作系统。该操作系统提供了安全编程接口和Junos SDK。 Juniper Networks Junos OS 21.4R3-S12之前版本、22.2所有版本、22.4R3-S8之前版本、23.2R2-S5之前版本、23.4R2-S5之前版本、24.2R2-S3之前版本和24.4R2之前版本存在代码问题漏洞,该漏洞源于数据包转发引擎存在异常条件检查不当,可能导致拒绝服务。
英文描述:
An Improper Check for Unusual or Exceptional Conditions vulnerability in the packet forwarding engine (PFE) of Juniper Networks Junos OS on EX4k Series and QFX5k Series platforms allows an unauthenticated network-adjacent attacker flapping an interface to cause traffic between VXLAN Network Identifiers (VNIs) to drop, leading to a Denial of Service (DoS). On all EX4k and QFX5k platforms, a link flap in an EVPN-VXLAN configuration Link Aggregation Group (LAG) results in Inter-VNI traffic dropping when there are multiple load-balanced next-hop routes for the same destination. This issue is only applicable to systems that support EVPN-VXLAN Virtual Port-Link Aggregation Groups (VPLAG), such as the QFX5110, QFX5120, QFX5200, EX4100, EX4300, EX4400, and EX4650. Service can only be restored by restarting the affected FPC via the 'request chassis fpc restart slot <slot-number>' command. This issue affects Junos OS on EX4k and QFX5k Series: * all versions before 21.4R3-S12, * all versions of 22.2 * from 22.4 before 22.4R3-S8, * from 23.2 before 23.2R2-S5, * from 23.4 before 23.4R2-S5, * from 24.2 before 24.2R2-S3, * from 24.4 before 24.4R2.
CWE类型:
标签:
受影响产品
| 厂商 | 产品 | 版本 | 版本范围 | 平台 | CPE |
|---|---|---|---|---|---|
| Juniper Networks | Junos OS | - | < 21.4R3-S12 | - |
cpe:2.3:a:juniper_networks:junos_os:*:*:*:*:*:*:*:*
|
解决方案
中文解决方案:
英文解决方案:
临时解决方案:
CVSS评分详情
3.1 (cna)
MEDIUMCVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
4.0 (cna)
HIGHCVSS:4.0/AV:A/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:L/AU:Y/R:U/RE:M/U:Green
时间信息
利用信息
数据源详情
| 数据源 | 记录ID | 版本 | 提取时间 |
|---|---|---|---|
| CVE | cve_CVE-2026-21910 |
2026-01-16 02:21:11 | 2026-01-16 02:44:26 |
| NVD | nvd_CVE-2026-21910 |
2026-01-16 02:47:34 | 2026-01-16 02:48:09 |
| CNNVD | cnnvd_CNNVD-202601-2540 |
2026-01-19 09:28:44 | 2026-01-19 09:29:39 |
版本与语言
安全公告
变更历史
查看详细变更
- vulnerability_type: 未提取 -> 代码问题
- cnnvd_id: 未提取 -> CNNVD-202601-2540
- data_sources: ['cve', 'nvd'] -> ['cnnvd', 'cve', 'nvd']
查看详细变更
- affected_products_count: 7 -> 1
- data_sources: ['cve'] -> ['cve', 'nvd']