HOMEVULNERABILITIESCVE-2021-25149
CRITICAL

CVE-2021-25149

CWE-120Published: March 30, 2021· Updated: Jun 17, 2026

9.8
CVSS v3.1

Official Description

A remote buffer overflow vulnerability was discovered in some Aruba Instant Access Point (IAP) products in version(s): Aruba Instant 6.4.x: 6.4.4.8-4.2.4.17 and below; Aruba Instant 6.5.x: 6.5.4.16 and below; Aruba Instant 8.3.x: 8.3.0.12 and below; Aruba Instant 8.5.x: 8.5.0.6 and below; Aruba Instant 8.6.x: 8.6.0.2 and below. Aruba has released patches for Aruba Instant that address this security vulnerability.

NVD Source

Technical Analysis

CVE-2021-25149 can be exploited remotely over the network without requiring physical or adjacent access, significantly expanding the attack surface for threat actors.

The vulnerability requires no privileges and no user interaction, making it a prime target for automated exploitation campaigns and worm-like propagation.

A successful exploit results in complete confidentiality breach (data exposure), full integrity compromise (data manipulation), availability disruption (denial of service), with a CVSS base score of 9.8.

CVSS v3.1 Vector Breakdown

Exploitability
Attack VectorNetwork
Attack ComplexityLow
Privileges Req.None
User InteractionNone
ScopeUnchanged
Impact
ConfidentialityHigh
IntegrityHigh
AvailabilityHigh
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Affected Vendors & Products

arubanetworks1 product(s)
instant
siemens2 product(s)
scalance w1750d firmwarescalance w1750d
Source: NVD CPE · 3 total CPE entries

Exploit & PoC Resources

NO KNOWN EXPLOITNo public exploit confirmed at this time
Exploit-DB
Offensive Security exploit database
GitHub PoC Search
Community PoC repositories
Rapid7 / Metasploit
Metasploit module search
PacketStorm
Security advisories & exploits
NVD Detail
Official NIST entry
MITRE CVE
CVE Program entry
External links open in a new tab. Always verify in a controlled environment before use.

Official Patches & Advisories

PATCHhttps://cert-portal.siemens.com/productcert/pdf/ssa-723417.pdf
PATCHhttps://cert-portal.siemens.com/productcert/pdf/ssa-723417.pdf
ADVISORYhttps://www.arubanetworks.com/assets/alert/ARUBA-PSA-2021-007.txt
ADVISORYhttps://www.arubanetworks.com/assets/alert/ARUBA-PSA-2021-007.txt

All References (4)

→
https://cert-portal.siemens.com/productcert/pdf/ssa-723417.pdfPatch · Third Party Advisory
→
https://www.arubanetworks.com/assets/alert/ARUBA-PSA-2021-007.txtVendor Advisory
→
https://cert-portal.siemens.com/productcert/pdf/ssa-723417.pdfPatch · Third Party Advisory
→
https://www.arubanetworks.com/assets/alert/ARUBA-PSA-2021-007.txtVendor Advisory

Quick Facts

CVE IDCVE-2021-25149
CVSS Score9.8 / 10
SeverityCRITICAL
WeaknessCWE-120
CISA KEVNo
Affected2 vendor(s)
PublishedMar 30, 2021

Related CVEs (CWE-120)

CVE-2021-33972
10.0
CVE-2026-24823
10.0
CVE-2022-31481
10.0
CVE-2022-20827
10.0
CVE-2021-33975
10.0
CVE-2026-24800
10.0

Recommended Actions

  • →Apply vendor patches immediately
  • →Monitor CVE-2021-25149 in threat intel feeds
  • →Review IDS/IPS signatures for exploitation attempts
Data sourced from NVD (NIST), CISA KEV, and EPSS (FIRST). Analysis generated by CTIWatch. CVE data is provided under the NVD usage policy.
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