CVE-2021-37727

Name: CVE-2021-37727
Creator: NVD / NIST
Published: 2021-10-12T15:15:08.09+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

HIGHCVSS 7.2/10EPSS 2.96%

Last modified Jun 17, 2026

CVE-2021-37727 is a high-severity vulnerability rated 7.2/10 on the CVSS scale. A remote arbitrary command execution vulnerability was discovered in HPE Aruba Instant (IAP) version(s): 6.4.x.x: 6.4.4.8-4.2.4.18 and below; Aruba Instant 6.5.x.x: 6.5.4.20 and below; Aruba Instant 8.5.x.x: 8.5.0.12 and below; Aruba Instant 8.6.x.x: 8.6.0.11 and below; Aruba Instant 8.7.x.x: 8.7.1.3 and below. Aruba has released patches for Aruba Instant (IAP) that address this security vulnerability.. EPSS estimates a 2.96% chance of exploitation in the next 30 days.

Description

A remote arbitrary command execution vulnerability was discovered in HPE Aruba Instant (IAP) version(s): 6.4.x.x: 6.4.4.8-4.2.4.18 and below; Aruba Instant 6.5.x.x: 6.5.4.20 and below; Aruba Instant 8.5.x.x: 8.5.0.12 and below; Aruba Instant 8.6.x.x: 8.6.0.11 and below; Aruba Instant 8.7.x.x: 8.7.1.3 and below. Aruba has released patches for Aruba Instant (IAP) that address this security vulnerability.

Metrics

CVSS 3.1

7.2/10

CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H

EPSS Probability

2.96%

85.4th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-78

Affected Software

Vendor	Product	Versions
Arubanetworks	Aruba Instant	>= 6.4.0.2-4.1.0.0, < 6.4.4.8-4.2.4.19
Arubanetworks	Aruba Instant	>= 6.5.4.0, < 6.5.4.20
Arubanetworks	Aruba Instant	>= 8.5.0.0, < 8.5.0.12
Arubanetworks	Aruba Instant	>= 8.6.0.0, < 8.6.0.11
Arubanetworks	Aruba Instant	>= 8.7.0.0, < 8.7.1.3
Siemens	Scalance W1750d Firmware	>= 8.7.1.3

References

https://cert-portal.siemens.com/productcert/pdf/ssa-917476.pdfPatch, Third Party Advisory
https://www.arubanetworks.com/assets/alert/ARUBA-PSA-2021-017.txtVendor Advisory
https://cert-portal.siemens.com/productcert/pdf/ssa-917476.pdfPatch, Third Party Advisory
https://www.arubanetworks.com/assets/alert/ARUBA-PSA-2021-017.txtVendor Advisory

Timeline

Published: Oct 12, 2021
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2021-37727?

How severe is CVE-2021-37727?

CVE-2021-37727 has a CVSS score of 7.2/10 (HIGH severity). The EPSS model estimates a 2.96% probability of exploitation in the next 30 days.

How do I fix CVE-2021-37727?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2021-37727?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST