CVE-2021-37730

highpriority · track · 30EPSS 0.031 · 87 %ileDEEUUS

grimoire priorityP2 · Scheduled

Exploitable?

—

no known exploitation

Likely / severe?

3.06% (87th) EPSS

CVSS 9 · high

Is it mine?

16 products

Check your exposure

Who says so?

5 sources

cnnvd · enisa_euvd · cisa_csaf_ot · nvd

EPSS · scored 2026-10-26

A remote arbitrary command execution vulnerability was discovered in HPE Aruba Instant (IAP) version(s): Aruba Instant 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.

remediations

Vendor fix, mitigation, or workaround guidance, as published by each source.

A vendor fix is available.

FixedSCALANCE W1750Dsiemens_psirt
Update to V8.7.1.3 or later version
https://support.industry.siemens.com/cs/ww/en/view/109802805/
FixedSCALANCE W1750Dcisa_csaf_ot
Update to V8.7.1.3 or later version
https://support.industry.siemens.com/cs/ww/en/view/109802805/
WorkaroundSCALANCE W1750Dsiemens_psirt
Block access for Aruba Instant device on port UDP/8211 from all untrusted users
WorkaroundSCALANCE W1750Dcisa_csaf_ot
Block access for Aruba Instant device on port UDP/8211 from all untrusted users

cvss

Technical severity, 0–10. One row per scoring source.

9.0

010

base score 0–10 · higher = more severe · hover a vector to decode⚠ sources disagree · medium–high · 6.6–9

v2.09highAV:N/AC:L/Au:S/C:C/I:C/A:Cprimary · NVD / NIST USexploitability 8 · impact 10

v3.17.2highCVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:Hprimary · NVD / NIST USexploitability 1.2 · impact 5.9

v3.17.2highCVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H/E:P/RL:O/RC:Csecondary · CISA US

v3.17.2highCVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H/E:P/RL:O/RC:Csecondary · Siemens ProductCERT DE

v3.16.6mediumCVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H/E:Usecondary · CVSS-BT (t0sche)

weaknesses

The CWE weakness classes this flaw belongs to.

CWE-78USprimaryCWE-77USCWE-77US

affected products (16)

Products and version ranges known to be affected.

SCALANCE W1750Dall versionscisa_csaf_otUS
Siemens SCALANCE W1750D< V8.7.1.3cisa_csaf_otUS
Siemens SCALANCE W1750DV8.7.1.3_ → V8.7.1.9cisa_csaf_otUS
n/a HPE Aruba Instant (IAP)≤ Aruba Instant 6.5.x.x: 6.5.4.20 and belowenisa_euvdEU
n/a HPE Aruba Instant (IAP)≤ Aruba Instant 8.7.x.x: 8.7.1.3 and belowenisa_euvdEU
n/a HPE Aruba Instant (IAP)≤ Aruba Instant 8.5.x.x: 8.5.0.12 and belowenisa_euvdEU
n/a HPE Aruba Instant (IAP)≤ Aruba Instant 8.6.x.x: 8.6.0.11 and belowenisa_euvdEU
n/a HPE Aruba Instant (IAP)≤ Aruba Instant 6.4.x.x: 6.4.4.8-4.2.4.18 and belowenisa_euvdEU
arubanetworks aruba instant6.4.0.2-4.1.0.0 → 6.4.4.8-4.2.4.19nvdUScpe:2.3:a:arubanetworks:aruba_instant:*:*:*:*:*:*:*:*
arubanetworks aruba instant6.5.4.0 → 6.5.4.20nvdUScpe:2.3:a:arubanetworks:aruba_instant:*:*:*:*:*:*:*:*
arubanetworks aruba instant8.5.0.0 → 8.5.0.12nvdUScpe:2.3:a:arubanetworks:aruba_instant:*:*:*:*:*:*:*:*
arubanetworks aruba instant8.6.0.0 → 8.6.0.11nvdUScpe:2.3:a:arubanetworks:aruba_instant:*:*:*:*:*:*:*:*
arubanetworks aruba instant8.7.0.0 → 8.7.1.3nvdUScpe:2.3:a:arubanetworks:aruba_instant:*:*:*:*:*:*:*:*
siemens scalance w1750d firmware≥ 8.7.1.3nvdUScpe:2.3:o:siemens:scalance_w1750d_firmware:*:*:*:*:*:*:*:*
Siemens SCALANCE W1750D< V8.7.1.3siemens_psirtDE
Siemens SCALANCE W1750DV8.7.1.3 → V8.7.1.9siemens_psirtDE

advisories (2)

Vendor and ecosystem advisories describing this.

SSA-917476SSA-917476: Multiple Vulnerabilities in SCALANCE W1750D2021-11-09csaf · siemens_psirtDE
The Scalance W1750D device contains multiple vulnerabilities that could allow an attacker to execute code on the affected device(s), read arbitrary files, or create a denial-of-service condition. Siemens has released updates for the affected products and recommends to update to the latest versions.
ICSA-21-315-06Siemens SCALANCE W1750D2021-11-09icsa · cisa_csaf_otUS
The Scalance W1750D device contains multiple vulnerabilities that could allow an attacker to execute code on the affected device(s), read arbitrary files, or create a denial-of-service condition. Siemens has released updates for the affected products and recommends to update to the latest versions.

also known as (3)

Other names and identifiers for this entity.

sources

Which sources assert this record, and when.

cnnvd enisa_euvd cisa_csaf_ot nvd siemens_psirt NVD CVE.org MITRE

published 2021-10-12modified 2026-06-17

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references (11)

External citations — patches, advisories, analysis.

scry

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