CVE-2021-31371 is an information exposure vulnerability affecting Juniper Networks Junos OS on various QFX5000 Series switches. It allows internal communication packets, containing sensitive configuration details like heartbeats and kernel versions, to egress the switch and potentially leak to the internet. Rated as Medium severity (CVSS 5.3), this vulnerability has a network attack vector with low complexity, requiring no user interaction, and could lead to unauthorized disclosure of information. There is currently no evidence of active exploitation, public exploit code, or significant community discussion surrounding this CVE.
| Vendor | Product | Version(s) | CPE |
|---|---|---|---|
< 17.3R3-S12CPE match | cpe:2.3:o:juniper:junos:*:*:*:*:*:*:*:* | ||
>= 18.1, < 18.1R3-S13CPE match | cpe:2.3:o:juniper:junos:*:*:*:*:*:*:*:* | ||
>= 18.3, < 18.3R3-S5CPE match | cpe:2.3:o:juniper:junos:*:*:*:*:*:*:*:* | ||
>= 19.1, < 19.1R3-S6CPE match | cpe:2.3:o:juniper:junos:*:*:*:*:*:*:*:* | ||
>= 20.2, < 20.2R3-S2CPE match | cpe:2.3:o:juniper:junos:*:*:*:*:*:*:*:* |
CVSS version used by this source: 3.1
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
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