CVE-2021-25143

Severity: high (CVSS 7.5 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 1.5% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2021-03-29 · updated 2026-06-17

Description

A remote denial of service (dos) vulnerability was discovered in some Aruba Instant Access Point (IAP) products in version(s): Aruba Instant 8.3.x: 8.3.0.12 and below; Aruba Instant 8.5.x: 8.5.0.9 and below; Aruba Instant 8.6.x: 8.6.0.4 and below. Aruba has released patches for Aruba Instant that address this security vulnerability.

Affected products

Arubanetworks Instant: from 8.3.0.0 before 8.3.0.13; from 8.5.0.0 before 8.5.0.10; from 8.6.0.0 before 8.6.0.5 — fixed in 8.3.0.13, 8.5.0.10, 8.6.0.5
Siemens Scalance W1750D Firmware: before 8.7.0 — fixed in 8.7.0

How to fix

Upgrade to a fixed version: Arubanetworks Instant 8.3.0.13, 8.5.0.10, 8.6.0.5; Siemens Scalance W1750D Firmware 8.7.0. Check the vendor advisory for mitigations.

References

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