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Fencer Intel
high 7.5

CVE-2021-25143 json

A remote denial of service (dos) vulnerability was discovered in some Aruba Instant Access Point (IAP) products in version(s): Aruba Instan…

published 5y ago modified 4mo ago also EUVD-2021-12054

cvss
7.5
version 3.1, NVD
cisa kev
Not listed
not in CISA's catalog
epss
1.5%
EPSS 1.5% chance of exploitation in 30 days, percentile 73%
public exploits
0
none known

Summary

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.

Patch / fix

  • arubanetworks instant 8.3.0.13, 8.5.0.10, 8.6.0.5
  • siemens scalance_w1750d_firmware 8.7.0

Is CVE-2021-25143 in your stack? Fencer shows which of your repositories are affected as soon as an advisory lands, and opens the fix as a pull request.

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Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

cisa ICSA-21-131-14 updated cvss 7.5

Siemens SCALANCE W1750D (Update B)

Facts from CISA's republication of the vendor's own advisory (CSAF); the linked advisory is the authoritative source. CISA notification · csaf

Exploit prediction

1.45% chance of exploitation in the next 30 days, higher than 73% of all scored CVEs (FIRST EPSS, 2026-11-09).

CVSS scores

assigned by version score vector
NVD 3.1 7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
NVD 2.0 5.0 AV:N/AC:L/Au:N/C:N/I:N/A:P

Affected products

  • n/a Aruba Instant Access Points

References

Sources

Fencer Intel keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.