How severe is CVE-2021-37735?

CVE-2021-37735 has a CVSS 3.x base score of 5.3, rated medium severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability low.

Is CVE-2021-37735 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (66th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2021-37735?

CVE-2021-37735 primarily affects Arubanetworks Aruba Instant. In total, 2 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2021-37735?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

When was CVE-2021-37735 published?

CVE-2021-37735 was published on 2021-10-12 and last updated on 2026-06-17.

CVE-2021-37735

CVE-2021-37735 is a medium-severity vulnerability in Arubanetworks Aruba Instant with a CVSS 3.x base score of 5.3. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-134.

Key facts

Severity: Medium (CVSS 3.x base score 5.3)
CVSS v2: 5.0
EPSS exploit prediction: 1% (66th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-134
Affected product: Arubanetworks Aruba Instant
Published: 2021-10-12
Last modified: 2026-06-17

Description

A remote denial of service vulnerability was discovered in Aruba Instant version(s): Aruba Instant 6.5.x.x: 6.5.4.18 and below; Aruba Instant 8.5.x.x: 8.5.0.10 and below; Aruba Instant 8.6.x.x: 8.6.0.4 and below. Aruba has released patches for Aruba Instant (IAP) that address this security vulnerability.

Frequently asked questions

What is CVE-2021-37735?: A remote denial of service vulnerability was discovered in Aruba Instant version(s): Aruba Instant 6.5.x.x: 6.5.4.18 and below; Aruba Instant 8.5.x.x: 8.5.0.10 and below; Aruba Instant 8.6.x.x: 8.6.0.4 and below. Aruba has released patches for Aruba Instant (IAP) that address this security vulnerability.
How severe is CVE-2021-37735?: CVE-2021-37735 has a CVSS 3.x base score of 5.3, rated medium severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability low.
Is CVE-2021-37735 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (66th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2021-37735?: CVE-2021-37735 primarily affects Arubanetworks Aruba Instant. In total, 2 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2021-37735?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2021-37735 published?: CVE-2021-37735 was published on 2021-10-12 and last updated on 2026-06-17.

References

Affected products (2)

cpe:2.3:a:arubanetworks:aruba_instant:*:*:*:*:*:*:*:*
cpe:2.3:o:siemens:scalance_w1750d_firmware:*:*:*:*:*:*:*:*

More vulnerabilities in Arubanetworks Aruba Instant

CVE-2021-37726 — Critical (CVSS 9.8): A remote buffer overflow vulnerability was discovered in HPE Aruba Instant (IAP) version(s): Aruba Instant 8.7.x.x:…
CVE-2016-2031 — Critical (CVSS 9.8): Multiple vulnerabilities exists in Aruba Instate before 4.1.3.0 and 4.2.3.1 due to insufficient validation of…
CVE-2018-7084 — Critical (CVSS 9.8): A command injection vulnerability is present that permits an unauthenticated user with access to the Aruba Instant web…
CVE-2016-2032 — High (CVSS 7.5): A vulnerability exists in the Aruba AirWave Management Platform 8.x prior to 8.2 in the management interface of an…
CVE-2018-7083 — High (CVSS 7.5): If a process running within Aruba Instant crashes, it may leave behind a "core dump", which contains the memory…
CVE-2021-37732 — High (CVSS 7.2): A remote arbitrary command execution vulnerability was discovered in HPE Aruba Instant (IAP) version(s): Aruba Instant…

All CVEs affecting Arubanetworks Aruba Instant →

Other CWE-134 vulnerabilities

CVE-2012-1851 — Critical (CVSS 10.0): Format string vulnerability in the Print Spooler service in Microsoft Windows XP SP2 and SP3, Windows Server 2003 SP2,…
CVE-2012-0242 — Critical (CVSS 10.0): Format string vulnerability in Advantech/BroadWin WebAccess before 7.0 allows remote attackers to execute arbitrary…
CVE-2011-2475 — Critical (CVSS 10.0): Format string vulnerability in ECTrace.dll in the iMailGateway service in the Internet Mail Gateway in OneBridge Server…
CVE-2011-1568 — Critical (CVSS 10.0): Format string vulnerability in the logText function in shmemmgr9.dll in IGSSdataServer.exe 9.00.00.11074, and…
CVE-2010-4235 — Critical (CVSS 10.0): Format string vulnerability in RealNetworks Helix Server 12.x, 13.x, and 14.x before 14.2, and Helix Mobile Server…
CVE-2011-0270 — Critical (CVSS 10.0): Format string vulnerability in nnmRptConfig.exe in HP OpenView Network Node Manager (OV NNM) 7.51 and 7.53 allows…

Browse all CWE-134 vulnerabilities →